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-rw-r--r--cpu/arm926ejs/da8xx/Makefile49
-rw-r--r--cpu/arm926ejs/da8xx/clock.c57
-rw-r--r--cpu/arm926ejs/da8xx/ether.c667
-rw-r--r--cpu/arm926ejs/da8xx/i2c.c355
-rw-r--r--cpu/arm926ejs/da8xx/lowlevel_init.S73
-rw-r--r--cpu/arm926ejs/da8xx/nand.c468
-rw-r--r--cpu/arm926ejs/da8xx/reset.S77
-rw-r--r--cpu/arm926ejs/da8xx/timer.c148
8 files changed, 1894 insertions, 0 deletions
diff --git a/cpu/arm926ejs/da8xx/Makefile b/cpu/arm926ejs/da8xx/Makefile
new file mode 100644
index 0000000000..49fa3111ef
--- /dev/null
+++ b/cpu/arm926ejs/da8xx/Makefile
@@ -0,0 +1,49 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(SOC).a
+
+COBJS = timer.o ether.o nand.o clock.o i2c.o
+SOBJS = lowlevel_init.o reset.o
+
+SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS) $(SOBJS))
+START := $(addprefix $(obj),$(START))
+
+all: $(obj).depend $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/cpu/arm926ejs/da8xx/clock.c b/cpu/arm926ejs/da8xx/clock.c
new file mode 100644
index 0000000000..7cb979bc00
--- /dev/null
+++ b/cpu/arm926ejs/da8xx/clock.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2008 Sekhar Nori, Texas Instruments, Inc. <nsekhar@ti.com>
+ *
+ * DA8xx clock module
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * ----------------------------------------------------------------------------
+ */
+
+#include <common.h>
+#include <asm/arch/hardware.h>
+
+dv_reg_p sysdiv[9] = {
+ PLL0_DIV1, PLL0_DIV2, PLL0_DIV3, PLL0_DIV4, PLL0_DIV5, PLL0_DIV6,
+ PLL0_DIV7, PLL0_DIV8, PLL0_DIV9 };
+
+int clk_get(unsigned int id)
+{
+ int pre_div = (REG(PLL0_PREDIV) & 0xff) + 1;
+ int pllm = REG(PLL0_PLLM) + 1;
+ int post_div = (REG(PLL0_POSTDIV) & 0xff) + 1;
+ int pll_out = CFG_OSCIN_FREQ;
+
+ if(id == DAVINCI_AUXCLK_CLKID)
+ goto out;
+
+ /* Lets keep this simple. Combining operations can result in
+ * unexpected approximations
+ */
+ pll_out /= pre_div;
+ pll_out *= pllm;
+
+ if(id == DAVINCI_PLLM_CLKID)
+ goto out;
+
+ pll_out /= post_div;
+
+ if(id == DAVINCI_PLLC_CLKID)
+ goto out;
+
+ pll_out /= (REG(sysdiv[id - 1]) & 0xff) + 1;
+
+out:
+ return pll_out;
+}
diff --git a/cpu/arm926ejs/da8xx/ether.c b/cpu/arm926ejs/da8xx/ether.c
new file mode 100644
index 0000000000..f128196bb9
--- /dev/null
+++ b/cpu/arm926ejs/da8xx/ether.c
@@ -0,0 +1,667 @@
+/*
+ * Ethernet driver for TI TMS320DM644x (DaVinci) chips.
+ *
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Parts shamelessly stolen from TI's dm644x_emac.c. Original copyright
+ * follows:
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * dm644x_emac.c
+ *
+ * TI DaVinci (DM644X) EMAC peripheral driver source for DV-EVM
+ *
+ * Copyright (C) 2005 Texas Instruments.
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * ----------------------------------------------------------------------------
+
+ * Modifications:
+ * ver. 1.0: Sep 2005, Anant Gole - Created EMAC version for uBoot.
+ * ver 1.1: Nov 2005, Anant Gole - Extended the RX logic for multiple descriptors
+ *
+ */
+#include <common.h>
+#include <command.h>
+#include <net.h>
+#include <miiphy.h>
+#include <asm/arch/emac_defs.h>
+
+#ifdef CONFIG_DRIVER_TI_EMAC
+
+#ifdef CONFIG_CMD_NET
+
+unsigned int emac_dbg = 0;
+#define debug_emac(fmt,args...) if (emac_dbg) printf(fmt,##args)
+
+/* Internal static functions */
+static int dm644x_eth_hw_init (void);
+static int dm644x_eth_open (void);
+static int dm644x_eth_close (void);
+static int dm644x_eth_send_packet (volatile void *packet, int length);
+static int dm644x_eth_rcv_packet (void);
+static void dm644x_eth_mdio_enable(void);
+
+static int gen_init_phy(int phy_addr);
+static int gen_is_phy_connected(int phy_addr);
+static int gen_get_link_speed(int phy_addr);
+static int gen_auto_negotiate(int phy_addr);
+
+/* Wrappers exported to the U-Boot proper */
+int eth_hw_init(void)
+{
+ return(dm644x_eth_hw_init());
+}
+
+int eth_init(bd_t * bd)
+{
+ return(dm644x_eth_open());
+}
+
+void eth_halt(void)
+{
+ dm644x_eth_close();
+}
+
+int eth_send(volatile void *packet, int length)
+{
+ return(dm644x_eth_send_packet(packet, length));
+}
+
+int eth_rx(void)
+{
+ return(dm644x_eth_rcv_packet());
+}
+
+void eth_mdio_enable(void)
+{
+ dm644x_eth_mdio_enable();
+}
+/* End of wrappers */
+
+/* dm644x_eth_mac_addr[0] goes out on the wire first */
+
+static u_int8_t dm644x_eth_mac_addr[] = { 0x00, 0xff, 0xff, 0xff, 0xff, 0x00 };
+
+/*
+ * This function must be called before emac_open() if you want to override
+ * the default mac address.
+ */
+void dm644x_eth_set_mac_addr(const u_int8_t *addr)
+{
+ int i;
+
+ for (i = 0; i < sizeof (dm644x_eth_mac_addr); i++) {
+ dm644x_eth_mac_addr[i] = addr[i];
+ }
+}
+
+/* EMAC Addresses */
+static volatile emac_regs *adap_emac = (emac_regs *)EMAC_BASE_ADDR;
+static volatile ewrap_regs *adap_ewrap = (ewrap_regs *)EMAC_WRAPPER_BASE_ADDR;
+static volatile mdio_regs *adap_mdio = (mdio_regs *)EMAC_MDIO_BASE_ADDR;
+
+/* EMAC descriptors */
+static volatile emac_desc *emac_rx_desc = (emac_desc *)(EMAC_WRAPPER_RAM_ADDR + EMAC_RX_DESC_BASE);
+static volatile emac_desc *emac_tx_desc = (emac_desc *)(EMAC_WRAPPER_RAM_ADDR + EMAC_TX_DESC_BASE);
+static volatile emac_desc *emac_rx_active_head = 0;
+static volatile emac_desc *emac_rx_active_tail = 0;
+static int emac_rx_queue_active = 0;
+
+/* Receive packet buffers */
+static unsigned char emac_rx_buffers[EMAC_MAX_RX_BUFFERS * (EMAC_MAX_ETHERNET_PKT_SIZE + EMAC_PKT_ALIGN)];
+
+/* PHY address for a discovered PHY (0xff - not found) */
+static volatile u_int8_t active_phy_addr = 0xff;
+
+static int no_phy_init (int phy_addr) { return(1); }
+static int no_phy_is_connected (int phy_addr) { return(1); }
+static int no_phy_get_link_speed (int phy_addr) { return(1); }
+static int no_phy_auto_negotiate (int phy_addr) { return(1); }
+phy_t phy = {
+ .init = no_phy_init,
+ .is_phy_connected = no_phy_is_connected,
+ .get_link_speed = no_phy_get_link_speed,
+ .auto_negotiate = no_phy_auto_negotiate
+};
+
+static void dm644x_eth_mdio_enable(void)
+{
+ u_int32_t clkdiv;
+
+ clkdiv = (EMAC_MDIO_BUS_FREQ / EMAC_MDIO_CLOCK_FREQ) - 1;
+
+ adap_mdio->CONTROL = (clkdiv & 0xff) |
+ MDIO_CONTROL_ENABLE |
+ MDIO_CONTROL_FAULT |
+ MDIO_CONTROL_FAULT_ENABLE;
+
+ while (adap_mdio->CONTROL & MDIO_CONTROL_IDLE) {;}
+}
+
+/*
+ * Tries to find an active connected PHY. Returns 1 if address if found.
+ * If no active PHY found returns 0. If more than one active PHY (switch)
+ * returns 2
+ * Sets active_phy_addr variable when returns 1.
+ */
+static int dm644x_eth_phy_detect(void)
+{
+ u_int32_t phy_act_state;
+ int i;
+
+ active_phy_addr = 0xff;
+
+ if ((phy_act_state = adap_mdio->ALIVE) == 0)
+ return(0); /* No active PHYs */
+
+ debug_emac("dm644x_eth_phy_detect(), ALIVE = 0x%08x\n", phy_act_state);
+
+ for (i = 0; i < 32; i++) {
+ if (phy_act_state & (1 << i)) {
+ if (phy_act_state & ~(1 << i))
+ return(2); /* More than one PHY */
+ else {
+ active_phy_addr = i;
+ return(1);
+ }
+ }
+ }
+
+ return(0); /* Just to make GCC happy */
+}
+
+
+/* Read a PHY register via MDIO inteface. Returns 1 on success, 0 otherwise */
+int dm644x_eth_phy_read(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t *data)
+{
+ int tmp;
+
+ while (adap_mdio->USERACCESS0 & MDIO_USERACCESS0_GO) {;}
+
+ adap_mdio->USERACCESS0 = MDIO_USERACCESS0_GO |
+ MDIO_USERACCESS0_WRITE_READ |
+ ((reg_num & 0x1f) << 21) |
+ ((phy_addr & 0x1f) << 16);
+
+ /* Wait for command to complete */
+ while ((tmp = adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO) {;}
+
+ if (tmp & MDIO_USERACCESS0_ACK) {
+ *data = tmp & 0xffff;
+ return(1);
+ }
+
+ *data = -1;
+ return(0);
+}
+
+/* Write to a PHY register via MDIO inteface. Blocks until operation is complete. */
+int dm644x_eth_phy_write(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t data)
+{
+
+ while (adap_mdio->USERACCESS0 & MDIO_USERACCESS0_GO) {;}
+
+ adap_mdio->USERACCESS0 = MDIO_USERACCESS0_GO |
+ MDIO_USERACCESS0_WRITE_WRITE |
+ ((reg_num & 0x1f) << 21) |
+ ((phy_addr & 0x1f) << 16) |
+ (data & 0xffff);
+
+ /* Wait for command to complete */
+ while (adap_mdio->USERACCESS0 & MDIO_USERACCESS0_GO) {;}
+
+ return(1);
+}
+
+/* PHY functions for a generic PHY */
+static int gen_init_phy(int phy_addr)
+{
+ int ret = 1;
+
+ if (gen_get_link_speed(phy_addr)) {
+ /* Try another time */
+ ret = gen_get_link_speed(phy_addr);
+ }
+
+ return(ret);
+}
+
+static int gen_is_phy_connected(int phy_addr)
+{
+ u_int16_t dummy;
+
+ return(dm644x_eth_phy_read(phy_addr, PHY_PHYIDR1, &dummy));
+}
+
+static int gen_get_link_speed(int phy_addr)
+{
+ u_int16_t tmp;
+
+ if (dm644x_eth_phy_read(phy_addr, MII_STATUS_REG, &tmp) && (tmp & 0x04))
+ return(1);
+
+ return(0);
+}
+
+static int gen_auto_negotiate(int phy_addr)
+{
+ u_int16_t tmp;
+
+ if (!dm644x_eth_phy_read(phy_addr, PHY_BMCR, &tmp))
+ return(0);
+
+ /* Restart Auto_negotiation */
+ tmp |= PHY_BMCR_AUTON;
+ dm644x_eth_phy_write(phy_addr, PHY_BMCR, tmp);
+
+ /*check AutoNegotiate complete */
+ udelay (10000);
+ if (!dm644x_eth_phy_read(phy_addr, PHY_BMSR, &tmp))
+ return(0);
+
+ if (!(tmp & PHY_BMSR_AUTN_COMP))
+ return(0);
+
+ return(gen_get_link_speed(phy_addr));
+}
+/* End of generic PHY functions */
+
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+static int dm644x_mii_phy_read(char *devname, unsigned char addr, unsigned char reg, unsigned short *value)
+{
+ return(dm644x_eth_phy_read(addr, reg, value) ? 0 : 1);
+}
+
+static int dm644x_mii_phy_write(char *devname, unsigned char addr, unsigned char reg, unsigned short value)
+{
+ return(dm644x_eth_phy_write(addr, reg, value) ? 0 : 1);
+}
+
+int dm644x_eth_miiphy_initialize(bd_t *bis)
+{
+ miiphy_register(phy.name, dm644x_mii_phy_read, dm644x_mii_phy_write);
+
+ return(1);
+}
+#endif
+
+/*
+ * This function initializes the emac hardware. It does NOT initialize
+ * EMAC modules power or pin multiplexors, that is done by board_init()
+ * much earlier in bootup process. Returns 1 on success, 0 otherwise.
+ */
+static int dm644x_eth_hw_init(void)
+{
+ u_int32_t phy_id;
+ u_int16_t tmp;
+ int i, ret;
+
+ /* The RMII clock can be sources internally through the SYSCLK7
+ * or can come externally through a dedicated pin. This selection is
+ * controlled by PinMux9[21]. PinMux registers are off-limits for ARM.
+ * In short, we just assume there is a 50MHz RMII clock available.
+ */
+
+ dm644x_eth_mdio_enable();
+
+ for (i = 0; i < 256; i++) {
+ if (adap_mdio->ALIVE)
+ break;
+ udelay(1000);
+ }
+
+ if (i >= 256) {
+ printf("No ETH PHY detected!!!\n");
+ return(0);
+ }
+
+ /* Find if a PHY is connected and get it's address */
+ ret = dm644x_eth_phy_detect();
+
+ if (ret == 2) {
+ printf("More than one PHY detected.\n");
+ return(1);
+ } else if(ret == 0)
+ return(0);
+
+ /* Get PHY ID and initialize phy_ops for a detected PHY */
+ if (!dm644x_eth_phy_read(active_phy_addr, PHY_PHYIDR1, &tmp)) {
+ active_phy_addr = 0xff;
+ return(0);
+ }
+
+ phy_id = (tmp << 16) & 0xffff0000;
+
+ if (!dm644x_eth_phy_read(active_phy_addr, PHY_PHYIDR2, &tmp)) {
+ active_phy_addr = 0xff;
+ return(0);
+ }
+
+ phy_id |= tmp & 0x0000ffff;
+
+ switch (phy_id) {
+ default:
+ sprintf(phy.name, "GENERIC @ 0x%02x", active_phy_addr);
+ phy.init = gen_init_phy;
+ phy.is_phy_connected = gen_is_phy_connected;
+ phy.get_link_speed = gen_get_link_speed;
+ phy.auto_negotiate = gen_auto_negotiate;
+ }
+
+ return(1);
+}
+
+
+/* Eth device open */
+static int dm644x_eth_open(void)
+{
+ dv_reg_p addr;
+ u_int32_t clkdiv, cnt;
+ volatile emac_desc *rx_desc;
+ int i;
+
+ debug_emac("+ emac_open\n");
+
+ /* Reset EMAC module and disable interrupts in wrapper */
+ adap_emac->SOFTRESET = 1;
+ while (adap_emac->SOFTRESET != 0) {;}
+ adap_ewrap->SOFTRESET = 1;
+ while (adap_ewrap->SOFTRESET != 0) {;}
+
+ adap_ewrap->C0RXEN = adap_ewrap->C1RXEN = adap_ewrap->C2RXEN = 0;
+ adap_ewrap->C0TXEN = adap_ewrap->C1TXEN = adap_ewrap->C2TXEN = 0;
+ adap_ewrap->C0MISCEN = adap_ewrap->C1MISCEN = adap_ewrap->C2MISCEN = 0;
+
+ rx_desc = emac_rx_desc;
+
+ adap_emac->TXCONTROL = 0x01;
+ adap_emac->RXCONTROL = 0x01;
+
+ /* Set MAC Addresses & Init multicast Hash to 0 (disable any multicast receive) */
+ /* Using channel 0 only - other channels are disabled */
+ for (i = 0; i < 8; i++) {
+ adap_emac->MACINDEX = i;
+ adap_emac->MACADDRHI =
+ (dm644x_eth_mac_addr[3] << 24) | /* bits 23-16 */
+ (dm644x_eth_mac_addr[2] << 16) | /* bits 31-24 */
+ (dm644x_eth_mac_addr[1] << 8) | /* bits 39-32 */
+ (dm644x_eth_mac_addr[0]); /* bits 47-40 */
+ adap_emac->MACADDRLO =
+ (dm644x_eth_mac_addr[5] << 8) | /* bits 8-0*/
+ (dm644x_eth_mac_addr[4]) | (1 << 19) | (1 << 20); /* bits 8-0 */
+ }
+
+ adap_emac->MACHASH1 = 0;
+ adap_emac->MACHASH2 = 0;
+
+ /* Set source MAC address - REQUIRED for pause frames */
+ adap_emac->MACSRCADDRHI =
+ (dm644x_eth_mac_addr[3] << 24) | /* bits 23-16 */
+ (dm644x_eth_mac_addr[2] << 16) | /* bits 31-24 */
+ (dm644x_eth_mac_addr[1] << 8) | /* bits 39-32 */
+ (dm644x_eth_mac_addr[0]); /* bits 47-40 */
+ adap_emac->MACSRCADDRLO =
+ (dm644x_eth_mac_addr[5] << 8) | /* bits 8-0 */
+ (dm644x_eth_mac_addr[4]); /* bits 15-8 */
+
+ /* Set DMA 8 TX / 8 RX Head pointers to 0 */
+ addr = &adap_emac->TX0HDP;
+ for(cnt = 0; cnt < 16; cnt++)
+ *addr++ = 0;
+
+ addr = &adap_emac->TX0CP;
+ for(cnt = 0; cnt < 16; cnt++)
+ *addr++ = 0;
+
+ /* Clear Statistics (do this before setting MacControl register) */
+ addr = &adap_emac->RXGOODFRAMES;
+ for(cnt = 0; cnt < EMAC_NUM_STATS; cnt++)
+ *addr++ = 0;
+
+ /* No multicast addressing */
+ adap_emac->MACHASH1 = 0;
+ adap_emac->MACHASH2 = 0;
+
+ /* Create RX queue and set receive process in place */
+ emac_rx_active_head = emac_rx_desc;
+ for (cnt = 0; cnt < EMAC_MAX_RX_BUFFERS; cnt++) {
+ rx_desc->next = (u_int32_t)(rx_desc + 1);
+ rx_desc->buffer = &emac_rx_buffers[cnt * (EMAC_MAX_ETHERNET_PKT_SIZE + EMAC_PKT_ALIGN)];
+ rx_desc->buff_off_len = EMAC_MAX_ETHERNET_PKT_SIZE;
+ rx_desc->pkt_flag_len = EMAC_CPPI_OWNERSHIP_BIT;
+ rx_desc++;
+ }
+
+ /* Set the last descriptor's "next" parameter to 0 to end the RX desc list */
+ rx_desc--;
+ rx_desc->next = 0;
+ emac_rx_active_tail = rx_desc;
+ emac_rx_queue_active = 1;
+
+ /* Enable TX/RX */
+ adap_emac->RXMAXLEN = EMAC_MAX_ETHERNET_PKT_SIZE;
+ adap_emac->RXBUFFEROFFSET = 0;
+
+ /* No fancy configs - Use this for promiscous for debug - EMAC_RXMBPENABLE_RXCAFEN_ENABLE */
+ adap_emac->RXMBPENABLE = EMAC_RXMBPENABLE_RXBROADEN;
+
+ /* Enable ch 0 only */
+ adap_emac->RXUNICASTSET = 0x01;
+
+ /* Enable MII interface and Full duplex mode */
+ adap_emac->MACCONTROL = (EMAC_MACCONTROL_MIIEN_ENABLE | EMAC_MACCONTROL_FULLDUPLEX_ENABLE) | EMAC_MACCONTROL_RMIISPEED_100;
+
+ /* Init MDIO & get link state */
+ clkdiv = (EMAC_MDIO_BUS_FREQ / EMAC_MDIO_CLOCK_FREQ) - 1;
+ adap_mdio->CONTROL = ((clkdiv & 0xff) | MDIO_CONTROL_ENABLE | MDIO_CONTROL_FAULT);
+
+ if (!phy.get_link_speed(active_phy_addr))
+ return(0);
+
+ /* Start receive process */
+ adap_emac->RX0HDP = (u_int32_t)emac_rx_desc;
+
+ debug_emac("- emac_open\n");
+
+ return(1);
+}
+
+/* EMAC Channel Teardown */
+static void dm644x_eth_ch_teardown(int ch)
+{
+ dv_reg dly = 0xff;
+ dv_reg cnt;
+
+ debug_emac("+ emac_ch_teardown\n");
+
+ if (ch == EMAC_CH_TX) {
+ /* Init TX channel teardown */
+ adap_emac->TXTEARDOWN = 1;
+ for(cnt = 0; cnt != 0xfffffffc; cnt = adap_emac->TX0CP) {
+ /* Wait here for Tx teardown completion interrupt to occur
+ * Note: A task delay can be called here to pend rather than
+ * occupying CPU cycles - anyway it has been found that teardown
+ * takes very few cpu cycles and does not affect functionality */
+ dly--;
+ udelay(1);
+ if (dly == 0)
+ break;
+ }
+ adap_emac->TX0CP = cnt;
+ adap_emac->TX0HDP = 0;
+ } else {
+ /* Init RX channel teardown */
+ adap_emac->RXTEARDOWN = 1;
+ for(cnt = 0; cnt != 0xfffffffc; cnt = adap_emac->RX0CP) {
+ /* Wait here for Rx teardown completion interrupt to occur
+ * Note: A task delay can be called here to pend rather than
+ * occupying CPU cycles - anyway it has been found that teardown
+ * takes very few cpu cycles and does not affect functionality */
+ dly--;
+ udelay(1);
+ if (dly == 0)
+ break;
+ }
+ adap_emac->RX0CP = cnt;
+ adap_emac->RX0HDP = 0;
+ }
+
+ debug_emac("- emac_ch_teardown\n");
+}
+
+/* Eth device close */
+static int dm644x_eth_close(void)
+{
+ debug_emac("+ emac_close\n");
+
+ dm644x_eth_ch_teardown(EMAC_CH_TX); /* TX Channel teardown */
+ dm644x_eth_ch_teardown(EMAC_CH_RX); /* RX Channel teardown */
+
+ /* Reset EMAC module and disable interrupts in wrapper */
+ adap_emac->SOFTRESET = 1;
+ adap_ewrap->SOFTRESET = 1;
+
+ adap_ewrap->C0RXEN = adap_ewrap->C1RXEN = adap_ewrap->C2RXEN = 0;
+ adap_ewrap->C0TXEN = adap_ewrap->C1TXEN = adap_ewrap->C2TXEN = 0;
+ adap_ewrap->C0MISCEN = adap_ewrap->C1MISCEN = adap_ewrap->C2MISCEN = 0;
+
+ debug_emac("- emac_close\n");
+ return(1);
+}
+
+static int tx_send_loop = 0;
+
+/*
+ * This function sends a single packet on the network and returns
+ * positive number (number of bytes transmitted) or negative for error
+ */
+static int dm644x_eth_send_packet(volatile void *packet, int length)
+{
+ int ret_status = -1;
+ tx_send_loop = 0;
+
+ /* Return error if no link */
+ if (!phy.get_link_speed(active_phy_addr))
+ {
+ printf("WARN: emac_send_packet: No link\n");
+ return (ret_status);
+ }
+
+ /* Check packet size and if < EMAC_MIN_ETHERNET_PKT_SIZE, pad it up */
+ if (length < EMAC_MIN_ETHERNET_PKT_SIZE)
+ {
+ length = EMAC_MIN_ETHERNET_PKT_SIZE;
+ }
+
+ /* Populate the TX descriptor */
+ emac_tx_desc->next = 0;
+ emac_tx_desc->buffer = (u_int8_t *)packet;
+ emac_tx_desc->buff_off_len = (length & 0xffff);
+ emac_tx_desc->pkt_flag_len = ((length & 0xffff) |
+ EMAC_CPPI_SOP_BIT |
+ EMAC_CPPI_OWNERSHIP_BIT |
+ EMAC_CPPI_EOP_BIT);
+ /* Send the packet */
+ adap_emac->TX0HDP = (unsigned int)emac_tx_desc;
+
+ /* Wait for packet to complete or link down */
+ while (1) {
+ if (!phy.get_link_speed(active_phy_addr)) {
+ dm644x_eth_ch_teardown(EMAC_CH_TX);
+ return (ret_status);
+ }
+ if (adap_emac->TXINTSTATRAW & 0x01) {
+ ret_status = length;
+ break;
+ }
+ tx_send_loop++;
+ }
+
+ return(ret_status);
+}
+
+/*
+ * This function handles receipt of a packet from the network
+ */
+static int dm644x_eth_rcv_packet(void)
+{
+ volatile emac_desc *rx_curr_desc;
+ volatile emac_desc *curr_desc;
+ volatile emac_desc *tail_desc;
+ int status, ret = -1;
+
+ rx_curr_desc = emac_rx_active_head;
+ status = rx_curr_desc->pkt_flag_len;
+ if ((rx_curr_desc) && ((status & EMAC_CPPI_OWNERSHIP_BIT) == 0)) {
+ if (status & EMAC_CPPI_RX_ERROR_FRAME) {
+ /* Error in packet - discard it and requeue desc */
+ printf("WARN: emac_rcv_pkt: Error in packet\n");
+ } else {
+ NetReceive(rx_curr_desc->buffer, (rx_curr_desc->buff_off_len & 0xffff));
+ ret = rx_curr_desc->buff_off_len & 0xffff;
+ }
+
+ /* Ack received packet descriptor */
+ adap_emac->RX0CP = (unsigned int)rx_curr_desc;
+ curr_desc = rx_curr_desc;
+ emac_rx_active_head = (volatile emac_desc *)rx_curr_desc->next;
+
+ if (status & EMAC_CPPI_EOQ_BIT) {
+ if (emac_rx_active_head) {
+ adap_emac->RX0HDP = (unsigned int)emac_rx_active_head;
+ } else {
+ emac_rx_queue_active = 0;
+ printf("INFO:emac_rcv_packet: RX Queue not active\n");
+ }
+ }
+
+ /* Recycle RX descriptor */
+ rx_curr_desc->buff_off_len = EMAC_MAX_ETHERNET_PKT_SIZE;
+ rx_curr_desc->pkt_flag_len = EMAC_CPPI_OWNERSHIP_BIT;
+ rx_curr_desc->next = 0;
+
+ if (emac_rx_active_head == 0) {
+ printf("INFO: emac_rcv_pkt: active queue head = 0\n");
+ emac_rx_active_head = curr_desc;
+ emac_rx_active_tail = curr_desc;
+ if (emac_rx_queue_active != 0) {
+ adap_emac->RX0HDP = (unsigned int)emac_rx_active_head;
+ printf("INFO: emac_rcv_pkt: active queue head = 0, HDP fired\n");
+ emac_rx_queue_active = 1;
+ }
+ } else {
+ tail_desc = emac_rx_active_tail;
+ emac_rx_active_tail = curr_desc;
+ tail_desc->next = (unsigned int)curr_desc;
+ status = tail_desc->pkt_flag_len;
+ if (status & EMAC_CPPI_EOQ_BIT) {
+ adap_emac->RX0HDP = (unsigned int)curr_desc;
+ status &= ~EMAC_CPPI_EOQ_BIT;
+ tail_desc->pkt_flag_len = status;
+ }
+ }
+ return(ret);
+ }
+ return(0);
+}
+
+#endif /* CONFIG_CMD_NET */
+
+#endif /* CONFIG_DRIVER_TI_EMAC */
diff --git a/cpu/arm926ejs/da8xx/i2c.c b/cpu/arm926ejs/da8xx/i2c.c
new file mode 100644
index 0000000000..4a7938a10d
--- /dev/null
+++ b/cpu/arm926ejs/da8xx/i2c.c
@@ -0,0 +1,355 @@
+/*
+ * TI DaVinci (TMS320DM644x) I2C driver.
+ *
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * --------------------------------------------------------
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_DRIVER_DAVINCI_I2C
+
+#include <i2c.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/i2c_defs.h>
+
+#define CHECK_NACK() \
+ do {\
+ if (tmp & (I2C_TIMEOUT | I2C_STAT_NACK)) {\
+ REG(I2C_CON) = 0;\
+ return(1);\
+ }\
+ } while (0)
+
+
+static int wait_for_bus(void)
+{
+ int stat, timeout;
+
+ REG(I2C_STAT) = 0xffff;
+
+ for (timeout = 0; timeout < 10; timeout++) {
+ if (!((stat = REG(I2C_STAT)) & I2C_STAT_BB)) {
+ REG(I2C_STAT) = 0xffff;
+ return(0);
+ }
+
+ REG(I2C_STAT) = stat;
+ udelay(50000);
+ }
+
+ REG(I2C_STAT) = 0xffff;
+ return(1);
+}
+
+
+static int poll_i2c_irq(int mask)
+{
+ int stat, timeout;
+
+ for (timeout = 0; timeout < 10; timeout++) {
+ udelay(1000);
+ stat = REG(I2C_STAT);
+ if (stat & mask) {
+ return(stat);
+ }
+ }
+
+ REG(I2C_STAT) = 0xffff;
+ return(stat | I2C_TIMEOUT);
+}
+
+
+void flush_rx(void)
+{
+ int dummy;
+
+ while (1) {
+ if (!(REG(I2C_STAT) & I2C_STAT_RRDY))
+ break;
+
+ dummy = REG(I2C_DRR);
+ REG(I2C_STAT) = I2C_STAT_RRDY;
+ udelay(1000);
+ }
+}
+
+
+void i2c_init(int speed, int slaveadd)
+{
+ u_int32_t div, psc;
+
+ if (REG(I2C_CON) & I2C_CON_EN) {
+ REG(I2C_CON) = 0;
+ udelay (50000);
+ }
+
+ /* Get 1MHz into I2C internal */
+ psc = CFG_HZ_CLOCK/1000000;
+
+ div = CFG_HZ_CLOCK / (psc * speed); /* SCLL + SCLH */
+
+ REG(I2C_PSC) = psc - 1; /* 27MHz / (2 + 1) = 9MHz */
+ REG(I2C_SCLL) = (div * 50) / 100; /* 50% Duty */
+ REG(I2C_SCLH) = div - REG(I2C_SCLL);
+
+ REG(I2C_OA) = slaveadd;
+ REG(I2C_CNT) = 0;
+
+ /* Interrupts must be enabled or I2C module won't work */
+ REG(I2C_IE) = I2C_IE_SCD_IE | I2C_IE_XRDY_IE |
+ I2C_IE_RRDY_IE | I2C_IE_ARDY_IE | I2C_IE_NACK_IE;
+
+ /* Now enable I2C controller (get it out of reset) */
+ REG(I2C_CON) = I2C_CON_EN;
+
+ udelay(1000);
+}
+
+
+int i2c_probe(u_int8_t chip)
+{
+ int rc = 1;
+
+ if (chip == REG(I2C_OA)) {
+ return(rc);
+ }
+
+ REG(I2C_CON) = 0;
+ if (wait_for_bus()) {return(1);}
+
+ /* try to read one byte from current (or only) address */
+ REG(I2C_CNT) = 1;
+ REG(I2C_SA) = chip;
+ REG(I2C_CON) = (I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_STP | I2C_CON_FREE);
+ udelay (50000);
+
+ if (!(REG(I2C_STAT) & I2C_STAT_NACK)) {
+ rc = 0;
+ flush_rx();
+ REG(I2C_STAT) = 0xffff;
+ } else {
+ REG(I2C_STAT) = 0xffff;
+ REG(I2C_CON) |= I2C_CON_STP;
+ udelay(20000);
+ if (wait_for_bus()) {return(1);}
+ }
+
+ flush_rx();
+ REG(I2C_STAT) = 0xffff;
+ REG(I2C_CNT) = 0;
+ return(rc);
+}
+
+
+int i2c_read(u_int8_t chip, u_int32_t addr, int alen, u_int8_t *buf, int len)
+{
+ u_int32_t tmp;
+ int i;
+
+ if ((alen < 0) || (alen > 2)) {
+ printf("%s(): bogus address length %x\n", __FUNCTION__, alen);
+ return(1);
+ }
+
+ if (wait_for_bus()) {return(1);}
+
+ if (alen != 0) {
+ /* Start address phase */
+ tmp = I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_TRX |
+ I2C_CON_FREE;
+ REG(I2C_CNT) = alen;
+ REG(I2C_SA) = chip;
+ REG(I2C_CON) = tmp;
+
+ tmp = poll_i2c_irq(I2C_STAT_XRDY | I2C_STAT_NACK);
+
+ CHECK_NACK();
+
+ switch (alen) {
+ case 2:
+ /* Send address MSByte */
+ if (tmp & I2C_STAT_XRDY) {
+ REG(I2C_DXR) = (addr >> 8) & 0xff;
+ } else {
+ REG(I2C_CON) = 0;
+ return(1);
+ }
+
+ tmp = poll_i2c_irq(I2C_STAT_XRDY | I2C_STAT_NACK);
+
+ CHECK_NACK();
+ /* No break, fall through */
+ case 1:
+ /* Send address LSByte */
+ if (tmp & I2C_STAT_XRDY) {
+ REG(I2C_DXR) = addr & 0xff;
+ } else {
+ REG(I2C_CON) = 0;
+ return(1);
+ }
+
+ tmp = poll_i2c_irq(I2C_STAT_XRDY | I2C_STAT_NACK | I2C_STAT_ARDY);
+
+ CHECK_NACK();
+
+ if (!(tmp & I2C_STAT_ARDY)) {
+ REG(I2C_CON) = 0;
+ return(1);
+ }
+ }
+ }
+
+ /* Address phase is over, now read 'len' bytes and stop */
+ tmp = I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_STP | I2C_CON_FREE;
+ REG(I2C_CNT) = len & 0xffff;
+ REG(I2C_SA) = chip;
+ REG(I2C_CON) = tmp;
+
+ for (i = 0; i < len; i++) {
+ tmp = poll_i2c_irq(I2C_STAT_RRDY | I2C_STAT_NACK | I2C_STAT_ROVR);
+
+ CHECK_NACK();
+
+ if (tmp & I2C_STAT_RRDY) {
+ buf[i] = REG(I2C_DRR);
+ } else {
+ REG(I2C_CON) = 0;
+ return(1);
+ }
+ }
+
+ tmp = poll_i2c_irq(I2C_STAT_SCD | I2C_STAT_NACK);
+
+ CHECK_NACK();
+
+ if (!(tmp & I2C_STAT_SCD)) {
+ REG(I2C_CON) = 0;
+ return(1);
+ }
+
+ flush_rx();
+ REG(I2C_STAT) = 0xffff;
+ REG(I2C_CNT) = 0;
+ REG(I2C_CON) = 0;
+
+ return(0);
+}
+
+
+int i2c_write(u_int8_t chip, u_int32_t addr, int alen, u_int8_t *buf, int len)
+{
+ u_int32_t tmp;
+ int i;
+
+ if ((alen < 0) || (alen > 2)) {
+ printf("%s(): bogus address length %x\n", __FUNCTION__, alen);
+ return(1);
+ }
+ if (len < 0) {
+ printf("%s(): bogus length %x\n", __FUNCTION__, len);
+ return(1);
+ }
+
+ if (wait_for_bus()) {return(1);}
+
+ /* Start address phase */
+ tmp = I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_TRX | I2C_CON_STP;
+ REG(I2C_CNT) = (alen == 0) ? len & 0xffff : (len & 0xffff) + alen;
+ REG(I2C_SA) = chip;
+ REG(I2C_CON) = tmp;
+
+ switch (alen) {
+ case 2:
+ /* Send address MSByte */
+ tmp = poll_i2c_irq(I2C_STAT_XRDY | I2C_STAT_NACK);
+
+ CHECK_NACK();
+
+ if (tmp & I2C_STAT_XRDY) {
+ REG(I2C_DXR) = (addr >> 8) & 0xff;
+ } else {
+ REG(I2C_CON) = 0;
+ return(1);
+ }
+ /* No break, fall through */
+ case 1:
+ /* Send address LSByte */
+ tmp = poll_i2c_irq(I2C_STAT_XRDY | I2C_STAT_NACK);
+
+ CHECK_NACK();
+
+ if (tmp & I2C_STAT_XRDY) {
+ REG(I2C_DXR) = addr & 0xff;
+ } else {
+ REG(I2C_CON) = 0;
+ return(1);
+ }
+ }
+
+ for (i = 0; i < len; i++) {
+ tmp = poll_i2c_irq(I2C_STAT_XRDY | I2C_STAT_NACK);
+
+ CHECK_NACK();
+
+ if (tmp & I2C_STAT_XRDY) {
+ REG(I2C_DXR) = buf[i];
+ } else {
+ return(1);
+ }
+ }
+
+ tmp = poll_i2c_irq(I2C_STAT_SCD | I2C_STAT_NACK);
+
+ CHECK_NACK();
+
+ if (!(tmp & I2C_STAT_SCD)) {
+ REG(I2C_CON) = 0;
+ return(1);
+ }
+
+ flush_rx();
+ REG(I2C_STAT) = 0xffff;
+ REG(I2C_CNT) = 0;
+ REG(I2C_CON) = 0;
+
+ return(0);
+}
+
+
+u_int8_t i2c_reg_read(u_int8_t chip, u_int8_t reg)
+{
+ u_int8_t tmp;
+
+ i2c_read(chip, reg, 1, &tmp, 1);
+ return(tmp);
+}
+
+
+void i2c_reg_write(u_int8_t chip, u_int8_t reg, u_int8_t val)
+{
+ u_int8_t tmp;
+
+ i2c_write(chip, reg, 1, &tmp, 1);
+}
+
+#endif /* CONFIG_DRIVER_DAVINCI_I2C */
diff --git a/cpu/arm926ejs/da8xx/lowlevel_init.S b/cpu/arm926ejs/da8xx/lowlevel_init.S
new file mode 100644
index 0000000000..53f801a622
--- /dev/null
+++ b/cpu/arm926ejs/da8xx/lowlevel_init.S
@@ -0,0 +1,73 @@
+/*
+ * Low-level board setup code for TI DA8xx SoC based boards.
+ *
+ * Copyright (C) 2008 Texas Instruments, Inc <www.ti.com>
+ * Sekhar Nori <nsekhar@ti.com>
+ *
+ * Based on TI DaVinci low level init code. Original copyrights follow.
+ *
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Partially based on TI sources, original copyrights follow:
+ */
+
+/*
+ * Board specific setup info
+ *
+ * (C) Copyright 2003
+ * Texas Instruments, <www.ti.com>
+ * Kshitij Gupta <Kshitij@ti.com>
+ *
+ * Modified for OMAP 1610 H2 board by Nishant Kamat, Jan 2004
+ *
+ * Modified for OMAP 5912 OSK board by Rishi Bhattacharya, Apr 2004
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * Modified for DV-EVM board by Rishi Bhattacharya, Apr 2005
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * Modified for DV-EVM board by Swaminathan S, Nov 2005
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <asm/arch/hardware.h>
+
+.globl lowlevel_init
+lowlevel_init:
+
+ /*
+ * Call board-specific lowlevel init.
+ * That MUST be present and THAT returns
+ * back to arch calling code with "mov pc, lr."
+ */
+ b dv_board_init
+ nop
+
+.ltorg
+
+INTC_GLB_EN_ADDR:
+ .word INTC_GLB_EN
+INTC_EN_CLR0_ADDR:
+ .word INTC_EN_CLR0
+INTC_HINT_EN_ADDR:
+ .word INTC_HINT_EN
+
diff --git a/cpu/arm926ejs/da8xx/nand.c b/cpu/arm926ejs/da8xx/nand.c
new file mode 100644
index 0000000000..05049d59f1
--- /dev/null
+++ b/cpu/arm926ejs/da8xx/nand.c
@@ -0,0 +1,468 @@
+/*
+ * NAND driver for TI DaVinci based boards.
+ *
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Based on Linux DaVinci NAND driver by TI. Original copyright follows:
+ */
+
+/*
+ *
+ * linux/drivers/mtd/nand/nand_dm355.c
+ *
+ * NAND Flash Driver
+ *
+ * Copyright (C) 2006 Texas Instruments.
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * ----------------------------------------------------------------------------
+ *
+ * Overview:
+ * This is a device driver for the NAND flash device found on the
+ * DaVinci board which utilizes the Samsung k9k2g08 part.
+ *
+ Modifications:
+ ver. 1.0: Feb 2005, Vinod/Sudhakar
+ March 2008, Sandeep
+ -
+ *
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_CMD_NAND
+#if !defined(CFG_NAND_LEGACY)
+
+#include <asm/arch/hardware.h>
+#include <nand.h>
+#include <asm/arch/nand_defs.h>
+#include <asm/arch/emif_defs.h>
+
+#define CSL_EMIF_1_REGS (0x68000000)
+#define NAND4BITECCLOAD (CSL_EMIF_1_REGS + 0xBC)
+#define NAND4BITECC1 (CSL_EMIF_1_REGS + 0xC0)
+#define NAND4BITECC2 (CSL_EMIF_1_REGS + 0xC4)
+#define NAND4BITECC3 (CSL_EMIF_1_REGS + 0xC8)
+#define NAND4BITECC4 (CSL_EMIF_1_REGS + 0xCC)
+#define NANDERRADD1 (CSL_EMIF_1_REGS + 0xD0)
+#define NANDERRADD2 (CSL_EMIF_1_REGS + 0xD4)
+#define NANDERRVAL1 (CSL_EMIF_1_REGS + 0xD8)
+#define NANDERRVAL2 (CSL_EMIF_1_REGS + 0xDC)
+
+/* Definitions for 4-bit hardware ECC */
+#define NAND_4BITECC_MASK 0x03FF03FF
+#define EMIF_NANDFSR_ECC_STATE_MASK 0x00000F00
+#define ECC_STATE_NO_ERR 0x0
+#define ECC_STATE_TOO_MANY_ERRS 0x1
+#define ECC_STATE_ERR_CORR_COMP_P 0x2
+#define ECC_STATE_ERR_CORR_COMP_N 0x3
+#define ECC_MAX_CORRECTABLE_ERRORS 0x4
+
+extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
+
+static void nand_dm350evm_hwcontrol(struct mtd_info *mtd, int cmd)
+{
+ struct nand_chip *this = mtd->priv;
+ u_int32_t IO_ADDR_W = (u_int32_t)this->IO_ADDR_W;
+ u_int32_t IO_ADDR_R = (u_int32_t)this->IO_ADDR_R;
+
+ IO_ADDR_W &= ~(MASK_ALE|MASK_CLE);
+
+ switch (cmd) {
+ case NAND_CTL_SETCLE:
+ IO_ADDR_W |= MASK_CLE;
+ break;
+ case NAND_CTL_SETALE:
+ IO_ADDR_W |= MASK_ALE;
+ break;
+ }
+
+ this->IO_ADDR_W = (void *)IO_ADDR_W;
+}
+
+/*
+ * Instead of placing the spare data at the end of the page, the 4-bit ECC
+ * hardware generator requires that the page be subdivided into 4 subpages,
+ * each with its own spare data area. This structure defines the format of
+ * each of these subpages.
+ */
+static struct page_layout_item nand_dm355_hw10_512_layout[] = {
+ {.type = ITEM_TYPE_DATA,.length = 512},
+ {.type = ITEM_TYPE_OOB,.length = 6,},
+ {.type = ITEM_TYPE_ECC,.length = 10,},
+ {.type = 0,.length = 0,},
+};
+
+static struct nand_oobinfo nand_dm355_hw10_512_oobinfo = {
+ .useecc = MTD_NANDECC_AUTOPLACE,
+ /*
+ * We actually have 40 bytes of ECC per page, but the nand_oobinfo
+ * structure definition limits us to a maximum of 32 bytes. This
+ * doesn't matter, because out page_layout_item structure definition
+ * determines where our ECC actually goes in the flash page.
+ */
+ .eccbytes = 32,
+ .eccpos = {6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+ 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+ 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
+ 54, 55,
+ },
+ .oobfree = {{0, 6}, {16, 6}, {32, 6}, {48, 6}},
+};
+
+
+
+static int nand_dm355_hw10_512_block_markbad(struct mtd_info *mtd, loff_t ofs)
+{
+ struct nand_chip *this = mtd->priv;
+ int block;
+
+ /* Get block number */
+ block = ((int)ofs) >> this->bbt_erase_shift;
+ if (this->bbt)
+ this->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
+
+ /* Do we have a flash based bad block table ? */
+ if (this->options & NAND_USE_FLASH_BBT)
+ return nand_update_bbt(mtd, ofs);
+
+ return 0;
+}
+
+static void nand_dm355_4bit_enable_hwecc(struct mtd_info *mtd, int mode)
+{
+ struct nand_chip *this = mtd->priv;
+ emifregs emif_addr = (emifregs)CSL_EMIF_1_REGS;
+ u32 val;
+
+ switch (mode) {
+ case NAND_ECC_WRITE:
+ case NAND_ECC_READ:
+ /*
+ * Start a new ECC calculation for reading or writing 512 bytes
+ * of data.
+ */
+ val = (emif_addr->NANDFCR & ~(3 << 4));
+ val |= (1 << 4) | (1 << 12);
+ emif_addr->NANDFCR = val;
+ break;
+ case NAND_ECC_WRITEOOB:
+ case NAND_ECC_READOOB:
+ /*
+ * Terminate ECC calculation by performing a dummy read of an
+ * ECC register. Our hardware ECC generator supports including
+ * the OOB in the ECC calculation, but the NAND core code
+ * doesn't really support that. We will only calculate the ECC
+ * on the data; errors in the non-ECC bytes in the OOB will not
+ * be detected or corrected.
+ */
+ val = emif_addr->NANDF1ECC;
+ break;
+ case NAND_ECC_WRITESYN:
+ case NAND_ECC_READSYN:
+ /*
+ * Our ECC calculation has already been terminated, so no need
+ * to do anything here.
+ */
+ break;
+ default:
+ break;
+ }
+}
+
+static u32 nand_dm355_4bit_readecc(struct mtd_info *mtd, unsigned int ecc[4])
+{
+ emifregs emif_addr = (emifregs)CSL_EMIF_1_REGS;
+
+ ecc[0] = (*(dv_reg_p) NAND4BITECC1) & NAND_4BITECC_MASK;
+ ecc[1] = (*(dv_reg_p) NAND4BITECC2) & NAND_4BITECC_MASK;
+ ecc[2] = (*(dv_reg_p) NAND4BITECC3) & NAND_4BITECC_MASK;
+ ecc[3] = (*(dv_reg_p) NAND4BITECC4) & NAND_4BITECC_MASK;
+
+ return 0;
+}
+
+static int nand_dm355_4bit_calculate_ecc(struct mtd_info *mtd,
+ const u_char * dat,
+ u_char * ecc_code)
+{
+ unsigned int hw_4ecc[4] = { 0, 0, 0, 0 };
+ unsigned int const1 = 0, const2 = 0;
+ unsigned char count1 = 0;
+
+ /*
+ * Since the NAND_HWECC_SYNDROME option is enabled, this routine is
+ * only called just after the data and oob have been written. The
+ * ECC value calculated by the hardware ECC generator is available
+ * for us to read.
+ */
+ nand_dm355_4bit_readecc(mtd, hw_4ecc);
+
+ /*Convert 10 bit ecc value to 8 bit */
+ for (count1 = 0; count1 < 2; count1++) {
+ const2 = count1 * 5;
+ const1 = count1 * 2;
+
+ /* Take first 8 bits from val1 (count1=0) or val5 (count1=1) */
+ ecc_code[const2] = hw_4ecc[const1] & 0xFF;
+
+ /*
+ * Take 2 bits as LSB bits from val1 (count1=0) or val5
+ * (count1=1) and 6 bits from val2 (count1=0) or val5 (count1=1)
+ */
+ ecc_code[const2 + 1] =
+ ((hw_4ecc[const1] >> 8) & 0x3) | ((hw_4ecc[const1] >> 14) &
+ 0xFC);
+
+ /*
+ * Take 4 bits from val2 (count1=0) or val5 (count1=1) and
+ * 4 bits from val3 (count1=0) or val6 (count1=1)
+ */
+ ecc_code[const2 + 2] =
+ ((hw_4ecc[const1] >> 22) & 0xF) |
+ ((hw_4ecc[const1 + 1] << 4) & 0xF0);
+
+ /*
+ * Take 6 bits from val3(count1=0) or val6 (count1=1) and
+ * 2 bits from val4 (count1=0) or val7 (count1=1)
+ */
+ ecc_code[const2 + 3] =
+ ((hw_4ecc[const1 + 1] >> 4) & 0x3F) |
+ ((hw_4ecc[const1 + 1] >> 10) & 0xC0);
+
+ /* Take 8 bits from val4 (count1=0) or val7 (count1=1) */
+ ecc_code[const2 + 4] = (hw_4ecc[const1 + 1] >> 18) & 0xFF;
+ }
+
+ return 0;
+}
+
+static int nand_dm355_4bit_compare_ecc(struct mtd_info *mtd, u8 * read_ecc, /* read from NAND */
+ u8 * page_data)
+{
+ struct nand_chip *this = mtd->priv;
+ struct nand_dm355_info *info = this->priv;
+ unsigned short ecc_10bit[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+ int i;
+ unsigned int hw_4ecc[4] = { 0, 0, 0, 0 }, iserror = 0;
+ unsigned short *pspare = NULL, *pspare1 = NULL;
+ unsigned int numErrors, errorAddress, errorValue;
+ emifregs emif_addr = (emifregs)CSL_EMIF_1_REGS;
+ u32 val;
+
+ /*
+ * Check for an ECC where all bytes are 0xFF. If this is the case, we
+ * will assume we are looking at an erased page and we should ignore the
+ * ECC.
+ */
+ for (i = 0; i < 10; i++) {
+ if (read_ecc[i] != 0xFF)
+ break;
+ }
+ if (i == 10)
+ return 0;
+
+ /* Convert 8 bit in to 10 bit */
+ pspare = (unsigned short *)&read_ecc[2];
+ pspare1 = (unsigned short *)&read_ecc[0];
+ /* Take 10 bits from 0th and 1st bytes */
+ ecc_10bit[0] = (*pspare1) & 0x3FF; /* 10 */
+ /* Take 6 bits from 1st byte and 4 bits from 2nd byte */
+ ecc_10bit[1] = (((*pspare1) >> 10) & 0x3F)
+ | (((pspare[0]) << 6) & 0x3C0); /* 6 + 4 */
+ /* Take 4 bits form 2nd bytes and 6 bits from 3rd bytes */
+ ecc_10bit[2] = ((pspare[0]) >> 4) & 0x3FF; /* 10 */
+ /*Take 2 bits from 3rd byte and 8 bits from 4th byte */
+ ecc_10bit[3] = (((pspare[0]) >> 14) & 0x3)
+ | ((((pspare[1])) << 2) & 0x3FC); /* 2 + 8 */
+ /* Take 8 bits from 5th byte and 2 bits from 6th byte */
+ ecc_10bit[4] = ((pspare[1]) >> 8)
+ | ((((pspare[2])) << 8) & 0x300); /* 8 + 2 */
+ /* Take 6 bits from 6th byte and 4 bits from 7th byte */
+ ecc_10bit[5] = (pspare[2] >> 2) & 0x3FF; /* 10 */
+ /* Take 4 bits from 7th byte and 6 bits from 8th byte */
+ ecc_10bit[6] = (((pspare[2]) >> 12) & 0xF)
+ | ((((pspare[3])) << 4) & 0x3F0); /* 4 + 6 */
+ /*Take 2 bits from 8th byte and 8 bits from 9th byte */
+ ecc_10bit[7] = ((pspare[3]) >> 6) & 0x3FF; /* 10 */
+
+ /*
+ * Write the parity values in the NAND Flash 4-bit ECC Load register.
+ * Write each parity value one at a time starting from 4bit_ecc_val8
+ * to 4bit_ecc_val1.
+ */
+ for (i = 7; i >= 0; i--)
+ {
+ *(dv_reg_p)NAND4BITECCLOAD = ecc_10bit[i];
+ }
+
+ /*
+ * Perform a dummy read to the EMIF Revision Code and Status register.
+ * This is required to ensure time for syndrome calculation after
+ * writing the ECC values in previous step.
+ */
+ val = emif_addr->ERCSR;
+
+ /*
+ * Read the syndrome from the NAND Flash 4-Bit ECC 1-4 registers.
+ * A syndrome value of 0 means no bit errors. If the syndrome is
+ * non-zero then go further otherwise return.
+ */
+ nand_dm355_4bit_readecc(mtd, hw_4ecc);
+
+ if (hw_4ecc[0] == ECC_STATE_NO_ERR && hw_4ecc[1] == ECC_STATE_NO_ERR &&
+ hw_4ecc[2] == ECC_STATE_NO_ERR && hw_4ecc[3] == ECC_STATE_NO_ERR)
+ return 0;
+
+ /*
+ * Clear any previous address calculation by doing a dummy read of an
+ * error address register.
+ */
+ val = *(dv_reg_p)NANDERRADD1;
+
+ /*
+ * Set the addr_calc_st bit(bit no 13) in the NAND Flash Control
+ * register to 1.
+ */
+
+ emif_addr->NANDFCR |= (1 << 13);
+
+ /*
+ * Wait for the corr_state field (bits 8 to 11)in the
+ * NAND Flash Status register to be equal to 0x0, 0x1, 0x2, or 0x3.
+ */
+ do {
+ iserror = emif_addr->NANDFSR & 0xC00;
+ } while (iserror);
+
+ iserror = emif_addr->NANDFSR;
+ iserror &= EMIF_NANDFSR_ECC_STATE_MASK;
+ iserror = iserror >> 8;
+
+
+ if (iserror == ECC_STATE_NO_ERR)
+ return 0;
+ else if (iserror == ECC_STATE_TOO_MANY_ERRS)
+ {
+ printf("too many erros to be corrected!\n");
+ return -1;
+ }
+
+#if 1
+ numErrors = ((emif_addr->NANDFSR >> 16) & 0x3) + 1;
+
+ /* Read the error address, error value and correct */
+ for (i = 0; i < numErrors; i++) {
+ if (i > 1) {
+ errorAddress =
+ ((*(dv_reg_p)(NANDERRADD2) >>
+ (16 * (i & 1))) & 0x3FF);
+ errorAddress = ((512 + 7) - errorAddress);
+ errorValue =
+ ((*(dv_reg_p)(NANDERRVAL2) >>
+ (16 * (i & 1))) & 0xFF);
+ } else {
+ errorAddress =
+ ((*(dv_reg_p)(NANDERRADD1) >>
+ (16 * (i & 1))) & 0x3FF);
+ errorAddress = ((512 + 7) - errorAddress);
+ errorValue =
+ ((*(dv_reg_p)(NANDERRVAL1) >>
+ (16 * (i & 1))) & 0xFF);
+ }
+ /* xor the corrupt data with error value */
+ if (errorAddress < 512)
+ page_data[errorAddress] ^= errorValue;
+ }
+#else
+ numErrors = ((emif_addr->NANDFSR >> 16) & 0x3);
+ // bit 9:0
+ errorAddress = 519 - (*(dv_reg_p)NANDERRADD1 & (0x3FF));
+ errorValue = (*(dv_reg_p)NANDERRVAL1) & (0x3FF);
+ page_data[errorAddress] ^= (char)errorValue;
+
+ if(numErrors == 0)
+ return numErrors;
+ else {
+ // bit 25:16
+ errorAddress = 519 - ( (*(dv_reg_p)NANDERRADD1 & (0x3FF0000))>>16 );
+ errorValue = (*(dv_reg_p)NANDERRVAL1) & (0x3FF);
+ page_data[errorAddress] ^= (char)errorValue;
+
+ if(numErrors == 1)
+ return numErrors;
+ else {
+ // bit 9:0
+ errorAddress = 519 - (*(dv_reg_p)NANDERRADD2 & (0x3FF));
+ errorValue = (*(dv_reg_p)NANDERRVAL2) & (0x3FF);
+ page_data[errorAddress] ^= (char)errorValue;
+
+ if (numErrors == 2)
+ return numErrors;
+ else {
+ // bit 25:16
+ errorAddress = 519 - ( (*(dv_reg_p)NANDERRADD2 & (0x3FF0000))>>16 );
+ errorValue = (*(dv_reg_p)NANDERRVAL2) & (0x3FF);
+ page_data[errorAddress] ^= (char)errorValue;
+ }
+ }
+ }
+#endif
+
+ return numErrors;
+}
+
+static int nand_dm355_4bit_correct_data(struct mtd_info *mtd, u_char * dat,
+ u_char * read_ecc, u_char * calc_ecc)
+{
+ int r = 0;
+
+ /*
+ * dat points to 512 bytes of data. read_ecc points to the start of the
+ * oob area for this subpage, so the ecc values start at offset 6.
+ * The calc_ecc pointer is not needed since our caclulated ECC is
+ * already latched in the hardware ECC generator.
+ */
+#if 1
+ r = nand_dm355_4bit_compare_ecc(mtd, read_ecc + 6, dat);
+#endif
+
+ return r;
+}
+int board_nand_init(struct nand_chip *nand)
+{
+ nand->chip_delay = 0;
+ nand->eccmode = NAND_ECC_HW10_512;
+ nand->options = NAND_HWECC_SYNDROME | NAND_USE_FLASH_BBT;
+ nand->autooob = &nand_dm355_hw10_512_oobinfo;
+ nand->layout = nand_dm355_hw10_512_layout;
+ nand->calculate_ecc = nand_dm355_4bit_calculate_ecc;
+ nand->correct_data = nand_dm355_4bit_correct_data;
+ nand->enable_hwecc = nand_dm355_4bit_enable_hwecc;
+ nand->block_markbad = nand_dm355_hw10_512_block_markbad;
+
+ /* Set address of hardware control function */
+ nand->hwcontrol = nand_dm350evm_hwcontrol;
+
+
+ return 0;
+}
+
+#else
+#error "U-Boot legacy NAND support not available for DaVinci chips"
+#endif
+#endif /* CFG_USE_NAND */
diff --git a/cpu/arm926ejs/da8xx/reset.S b/cpu/arm926ejs/da8xx/reset.S
new file mode 100644
index 0000000000..a687d44035
--- /dev/null
+++ b/cpu/arm926ejs/da8xx/reset.S
@@ -0,0 +1,77 @@
+/*
+ * Processor reset using WDT for TI TMS320DM644x SoC.
+ *
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * -----------------------------------------------------
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+.globl reset_cpu
+reset_cpu:
+ ldr r0, WDT_TGCR
+ mov r1, $0x08
+ str r1, [r0]
+ ldr r1, [r0]
+ orr r1, r1, $0x03
+ str r1, [r0]
+ mov r1, $0
+ ldr r0, WDT_TIM12
+ str r1, [r0]
+ ldr r0, WDT_TIM34
+ str r1, [r0]
+ ldr r0, WDT_PRD12
+ str r1, [r0]
+ ldr r0, WDT_PRD34
+ str r1, [r0]
+ ldr r0, WDT_TCR
+ ldr r1, [r0]
+ orr r1, r1, $0x40
+ str r1, [r0]
+ ldr r0, WDT_WDTCR
+ ldr r1, [r0]
+ orr r1, r1, $0x4000
+ str r1, [r0]
+ ldr r1, WDTCR_VAL1
+ str r1, [r0]
+ ldr r1, WDTCR_VAL2
+ str r1, [r0]
+ nop
+ nop
+ nop
+ nop
+reset_cpu_loop:
+ b reset_cpu_loop
+
+WDT_TGCR:
+ .word 0x01c21c24
+WDT_TIM12:
+ .word 0x01c21c10
+WDT_TIM34:
+ .word 0x01c21c14
+WDT_PRD12:
+ .word 0x01c21c18
+WDT_PRD34:
+ .word 0x01c21c1c
+WDT_TCR:
+ .word 0x01c21c20
+WDT_WDTCR:
+ .word 0x01c21c28
+WDTCR_VAL1:
+ .word 0xa5c64000
+WDTCR_VAL2:
+ .word 0xda7e4000
diff --git a/cpu/arm926ejs/da8xx/timer.c b/cpu/arm926ejs/da8xx/timer.c
new file mode 100644
index 0000000000..6c670f0b75
--- /dev/null
+++ b/cpu/arm926ejs/da8xx/timer.c
@@ -0,0 +1,148 @@
+/*
+ * (C) Copyright 2003
+ * Texas Instruments <www.ti.com>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * (C) Copyright 2002-2004
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * (C) Copyright 2004
+ * Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
+ *
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <arm926ejs.h>
+
+typedef volatile struct {
+ u_int32_t pid12;
+ u_int32_t emumgt;
+ u_int32_t na1;
+ u_int32_t na2;
+ u_int32_t tim12;
+ u_int32_t tim34;
+ u_int32_t prd12;
+ u_int32_t prd34;
+ u_int32_t tcr;
+ u_int32_t tgcr;
+ u_int32_t wdtcr;
+} davinci_timer;
+
+davinci_timer *timer = (davinci_timer *)CFG_TIMERBASE;
+
+#define TIMER_LOAD_VAL (CFG_HZ_CLOCK / CFG_HZ)
+#define TIM_CLK_DIV 16
+
+static ulong timestamp;
+static ulong lastinc;
+
+int timer_init(void)
+{
+ /* We are using timer34 in unchained 32-bit mode, full speed */
+ timer->tcr = 0x0;
+ timer->tgcr = 0x0;
+ timer->tgcr = 0x06 | ((TIM_CLK_DIV - 1) << 8);
+ timer->tim34 = 0x0;
+ timer->prd34 = TIMER_LOAD_VAL;
+ lastinc = 0;
+ timestamp = 0;
+ timer->tcr = 2 << 22;
+
+ return(0);
+}
+
+void reset_timer(void)
+{
+ timer->tcr = 0x0;
+ timer->tim34 = 0;
+ lastinc = 0;
+ timestamp = 0;
+ timer->tcr = 2 << 22;
+}
+
+static ulong get_timer_raw(void)
+{
+ ulong now = timer->tim34;
+
+ if (now >= lastinc) {
+ /* normal mode */
+ timestamp += now - lastinc;
+ } else {
+ /* overflow ... */
+ timestamp += now + TIMER_LOAD_VAL - lastinc;
+ }
+ lastinc = now;
+ return timestamp;
+}
+
+ulong get_timer(ulong base)
+{
+ return((get_timer_raw() / (TIMER_LOAD_VAL / TIM_CLK_DIV)) - base);
+}
+
+void set_timer(ulong t)
+{
+ timestamp = t;
+}
+
+void udelay(unsigned long usec)
+{
+ ulong tmo;
+ ulong endtime;
+ signed long diff;
+
+ tmo = CFG_HZ_CLOCK / 1000;
+ tmo *= usec;
+ tmo /= (1000 * TIM_CLK_DIV);
+
+ endtime = get_timer_raw() + tmo;
+
+ do {
+ ulong now = get_timer_raw();
+ diff = endtime - now;
+ } while (diff >= 0);
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+ return(get_timer(0));
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk(void)
+{
+ return CFG_HZ;
+}
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-21 23:30:19 +0000