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-rw-r--r--board/gen860t/flash.c644
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diff --git a/board/gen860t/flash.c b/board/gen860t/flash.c
deleted file mode 100644
index ec32d07dbf..0000000000
--- a/board/gen860t/flash.c
+++ /dev/null
@@ -1,644 +0,0 @@
-/*
- * (C) Copyright 2001
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- * Keith Outwater, keith_outwater@mvsi.com
- *
- * 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 <mpc8xx.h>
-
-#if defined(CFG_ENV_IS_IN_FLASH)
-# ifndef CFG_ENV_ADDR
-# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
-# endif
-# ifndef CFG_ENV_SIZE
-# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
-# endif
-# ifndef CFG_ENV_SECT_SIZE
-# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
-# endif
-#endif
-
-/*
- * Use buffered writes to flash by default - they are about 32x faster than
- * single byte writes.
- */
-#ifndef CFG_GEN860T_FLASH_USE_WRITE_BUFFER
-#define CFG_GEN860T_FLASH_USE_WRITE_BUFFER
-#endif
-
-/*
- * Max time to wait (in mS) for flash device to allocate a write buffer.
- */
-#ifndef CFG_FLASH_ALLOC_BUFFER_TOUT
-#define CFG_FLASH_ALLOC_BUFFER_TOUT 100
-#endif
-
-/*
- * These functions support a single Intel StrataFlash device (28F128J3A)
- * in byte mode only!. The flash routines are very basic and simple
- * since there isn't really any remapping necessary.
- */
-
-/*
- * Intel SCS (Scalable Command Set) command definitions
- * (taken from 28F128J3A datasheet)
- */
-#define SCS_READ_CMD 0xff
-#define SCS_READ_ID_CMD 0x90
-#define SCS_QUERY_CMD 0x98
-#define SCS_READ_STATUS_CMD 0x70
-#define SCS_CLEAR_STATUS_CMD 0x50
-#define SCS_WRITE_BUF_CMD 0xe8
-#define SCS_PROGRAM_CMD 0x40
-#define SCS_BLOCK_ERASE_CMD 0x20
-#define SCS_BLOCK_ERASE_RESUME_CMD 0xd0
-#define SCS_PROGRAM_RESUME_CMD 0xd0
-#define SCS_BLOCK_ERASE_SUSPEND_CMD 0xb0
-#define SCS_SET_BLOCK_LOCK_CMD 0x60
-#define SCS_CLR_BLOCK_LOCK_CMD 0x60
-
-/*
- * SCS status/extended status register bit definitions
- */
-#define SCS_SR7 0x80
-#define SCS_XSR7 0x80
-
-/*---------------------------------------------------------------------*/
-#if 0
-#define DEBUG_FLASH
-#endif
-
-#ifdef DEBUG_FLASH
-#define PRINTF(fmt,args...) printf(fmt ,##args)
-#else
-#define PRINTF(fmt,args...)
-#endif
-/*---------------------------------------------------------------------*/
-
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-static ulong flash_get_size (vu_char *addr, flash_info_t *info);
-static int write_data8 (flash_info_t *info, ulong dest, uchar data);
-static void flash_get_offsets (ulong base, flash_info_t *info);
-
-/*-----------------------------------------------------------------------
- * Initialize the flash memory.
- */
-unsigned long
-flash_init (void)
-{
- volatile immap_t *immap = (immap_t *)CFG_IMMR;
- volatile memctl8xx_t *memctl = &immap->im_memctl;
- unsigned long size_b0;
- int i;
-
- for (i= 0; i < CFG_MAX_FLASH_BANKS; ++i) {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- }
-
- /*
- * The gen860t board only has one FLASH memory device, so the
- * FLASH Bank configuration is done statically.
- */
- PRINTF("\n## Get flash bank 1 size @ 0x%08x\n", FLASH_BASE0_PRELIM);
- size_b0 = flash_get_size((vu_char *)FLASH_BASE0_PRELIM, &flash_info[0]);
- if (flash_info[0].flash_id == FLASH_UNKNOWN) {
- printf ("## Unknown FLASH on Bank 0: "
- "ID 0x%lx, Size = 0x%08lx = %ld MB\n",
- flash_info[0].flash_id,size_b0, size_b0 << 20);
- }
-
- PRINTF("## Before remap:\n"
- " BR0: 0x%08x OR0: 0x%08x\n BR1: 0x%08x OR1: 0x%08x\n",
- memctl->memc_br0, memctl->memc_or0,
- memctl->memc_br1, memctl->memc_or1);
-
- /*
- * Remap FLASH according to real size
- */
- memctl->memc_or0 |= (-size_b0 & 0xFFFF8000);
- memctl->memc_br0 |= (CFG_FLASH_BASE & BR_BA_MSK);
-
- PRINTF("## After remap:\n"
- " BR0: 0x%08x OR0: 0x%08x\n", memctl->memc_br0, memctl->memc_or0);
-
- /*
- * Re-do sizing to get full correct info
- */
- size_b0 = flash_get_size ((vu_char *)CFG_FLASH_BASE, &flash_info[0]);
- flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
- flash_info[0].size = size_b0;
-
-#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
- /*
- * Monitor protection is ON by default
- */
- flash_protect(FLAG_PROTECT_SET,
- CFG_MONITOR_BASE,
- CFG_MONITOR_BASE + monitor_flash_len - 1,
- &flash_info[0]);
-#endif
-
-#ifdef CFG_ENV_IS_IN_FLASH
- /*
- * Environment protection ON by default
- */
- flash_protect(FLAG_PROTECT_SET,
- CFG_ENV_ADDR,
- CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
- &flash_info[0]);
-#endif
-
- PRINTF("## Final Flash bank size: 0x%08lx\n",size_b0);
- return (size_b0);
-}
-
-
-/*-----------------------------------------------------------------------
- * Fill in the FLASH offset table
- */
-static void
-flash_get_offsets (ulong base, flash_info_t *info)
-{
- int i;
-
- if (info->flash_id == FLASH_UNKNOWN) {
- return;
- }
-
- switch (info->flash_id & FLASH_VENDMASK) {
- case FLASH_MAN_INTEL:
- for (i = 0; i < info->sector_count; i++) {
- info->start[i] = base;
- base += 1024 * 128;
- }
- return;
-
- default:
- printf ("Don't know sector offsets for FLASH"
- " type 0x%lx\n", info->flash_id);
- return;
- }
-}
-
-
-/*-----------------------------------------------------------------------
- * Display FLASH device info
- */
-void
-flash_print_info (flash_info_t *info)
-{
- int i;
-
- if (info->flash_id == FLASH_UNKNOWN) {
- printf ("Missing or unknown FLASH type\n");
- return;
- }
-
- switch (info->flash_id & FLASH_VENDMASK) {
- case FLASH_MAN_INTEL:
- printf ("Intel ");
- break;
- default:
- printf ("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_28F128J3A:
- printf ("28F128J3A (128Mbit = 128K x 128)\n");
- break;
- default:
- printf ("Unknown Chip Type\n");
- break;
- }
-
- if (info->size >= (1024 * 1024)) {
- i = 20;
- } else {
- i = 10;
- }
- printf (" Size: %ld %cB in %d Sectors\n",
- info->size >> i,
- (i == 20) ? 'M' : 'k',
- info->sector_count);
-
- printf (" Sector Start Addresses:");
- for (i=0; i<info->sector_count; ++i) {
- if ((i % 5) == 0)
- printf ("\n ");
- printf (" %08lX%s",
- info->start[i],
- info->protect[i] ? " (RO)" : " "
- );
- }
- printf ("\n");
- return;
-}
-
-
-/*-----------------------------------------------------------------------
- * Get size and other information for a FLASH device.
- * NOTE: The following code cannot be run from FLASH!
- */
-static
-ulong flash_get_size (vu_char *addr, flash_info_t *info)
-{
-#define NO_FLASH 0
-
- vu_char value[2];
-
- /*
- * Try to read the manufacturer ID
- */
- addr[0] = SCS_READ_CMD;
- addr[0] = SCS_READ_ID_CMD;
- value[0] = addr[0];
- value[1] = addr[2];
- addr[0] = SCS_READ_CMD;
-
- PRINTF("Manuf. ID @ 0x%08lx: 0x%02x\n", (ulong)addr, value[0]);
- switch (value[0]) {
- case (INTEL_MANUFACT & 0xff):
- info->flash_id = FLASH_MAN_INTEL;
- break;
- default:
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- return (NO_FLASH);
- }
-
- /*
- * Read the device ID
- */
- PRINTF("Device ID @ 0x%08lx: 0x%02x\n", (ulong)(&addr[2]), value[1]);
- switch (value[1]) {
- case (INTEL_ID_28F128J3A & 0xff):
- info->flash_id += FLASH_28F128J3A;
- info->sector_count = 128;
- info->size = 16 * 1024 * 1024;
- break;
-
- default:
- info->flash_id = FLASH_UNKNOWN;
- return (NO_FLASH);
- }
-
- if (info->sector_count > CFG_MAX_FLASH_SECT) {
- printf ("** ERROR: sector count %d > max (%d) **\n",
- info->sector_count, CFG_MAX_FLASH_SECT);
- info->sector_count = CFG_MAX_FLASH_SECT;
- }
- return (info->size);
-}
-
-
-/*-----------------------------------------------------------------------
- * Erase the specified sectors in the specified FLASH device
- */
-int
-flash_erase(flash_info_t *info, int s_first, int s_last)
-{
- int flag, prot, sect;
- ulong start, now, last;
-
- if ((s_first < 0) || (s_first > s_last)) {
- if (info->flash_id == FLASH_UNKNOWN) {
- printf ("- missing\n");
- } else {
- printf ("- no sectors to erase\n");
- }
- return 1;
- }
-
- if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) {
- printf ("Can erase only Intel flash types - aborted\n");
- return 1;
- }
-
- prot = 0;
- for (sect=s_first; sect<=s_last; ++sect) {
- if (info->protect[sect]) {
- prot++;
- }
- }
-
- if (prot) {
- printf ("- Warning: %d protected sectors will not be erased!\n",
- prot);
- } else {
- printf ("\n");
- }
-
- start = get_timer (0);
- last = start;
-
- /*
- * Start erase on unprotected sectors
- */
- for (sect = s_first; sect<=s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- vu_char *addr = (uchar *)(info->start[sect]);
- vu_char status;
-
- /*
- * Disable interrupts which might cause a timeout
- */
- flag = disable_interrupts();
-
- *addr = SCS_CLEAR_STATUS_CMD;
- *addr = SCS_BLOCK_ERASE_CMD;
- *addr = SCS_BLOCK_ERASE_RESUME_CMD;
-
- /*
- * Re-enable interrupts if necessary
- */
- if (flag)
- enable_interrupts();
-
- /*
- * Wait at least 80us - let's wait 1 ms
- */
- udelay (1000);
-
- while (((status = *addr) & SCS_SR7) != SCS_SR7) {
- if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
- printf ("Timeout\n");
- *addr = SCS_BLOCK_ERASE_SUSPEND_CMD;
- *addr = SCS_READ_CMD;
- return 1;
- }
-
- /*
- * Show that we're waiting
- */
- if ((now - last) > 1000) { /* 1 second */
- putc ('.');
- last = now;
- }
- }
- *addr = SCS_READ_CMD;
- }
- }
- printf (" done\n");
- return 0;
-}
-
-
-#ifdef CFG_GEN860T_FLASH_USE_WRITE_BUFFER
-/*
- * Allocate a flash buffer, fill it with data and write it to the flash.
- * 0 - OK
- * 1 - Timeout on buffer request
- *
- * NOTE: After the last call to this function, WSM status needs to be checked!
- */
-static int
-write_flash_buffer8(flash_info_t *info_p, vu_char *src_p, vu_char *dest_p,
- uint count)
-{
- vu_char *block_addr_p = NULL;
- vu_char *start_addr_p = NULL;
- ulong blocksize = info_p->size / (ulong)info_p->sector_count;
-
- int i;
- uint time = get_timer(0);
-
- PRINTF("%s:%d: src: 0x%p dest: 0x%p count: %d\n",
- __FUNCTION__, __LINE__, src_p, dest_p, count);
-
- /*
- * What block are we in? We already know that the source address is
- * in the flash address range, but we also can't cross a block boundary.
- * We assume that the block does not cross a boundary (we'll check before
- * calling this function).
- */
- for (i = 0; i < info_p->sector_count; ++i) {
- if ( ((ulong)dest_p >= info_p->start[i]) &&
- ((ulong)dest_p < (info_p->start[i] + blocksize)) ) {
- PRINTF("%s:%d: Dest addr 0x%p is in block %d @ 0x%.8lx\n",
- __FUNCTION__, __LINE__, dest_p, i, info_p->start[i]);
- block_addr_p = (vu_char *)info_p->start[i];
- break;
- }
- }
-
- /*
- * Request a buffer
- */
- *block_addr_p = SCS_WRITE_BUF_CMD;
- while ((*block_addr_p & SCS_XSR7) != SCS_XSR7) {
- if (get_timer(time) > CFG_FLASH_ALLOC_BUFFER_TOUT) {
- PRINTF("%s:%d: Buffer allocation timeout @ 0x%p (waited %d mS)\n",
- __FUNCTION__, __LINE__, block_addr_p,
- CFG_FLASH_ALLOC_BUFFER_TOUT);
- return 1;
- }
- *block_addr_p = SCS_WRITE_BUF_CMD;
- }
-
- /*
- * Fill the buffer with data
- */
- start_addr_p = dest_p;
- *block_addr_p = count - 1; /* flash device wants count - 1 */
- PRINTF("%s:%d: Fill buffer at block addr 0x%p\n",
- __FUNCTION__, __LINE__, block_addr_p);
- for (i = 0; i < count; i++) {
- *start_addr_p++ = *src_p++;
- }
-
- /*
- * Flush buffer to flash
- */
- *block_addr_p = SCS_PROGRAM_RESUME_CMD;
-#if 1
- time = get_timer(0);
- while ((*block_addr_p & SCS_SR7) != SCS_SR7) {
- if (get_timer(time) > CFG_FLASH_WRITE_TOUT) {
- PRINTF("%s:%d: Write timeout @ 0x%p (waited %d mS)\n",
- __FUNCTION__, __LINE__, block_addr_p, CFG_FLASH_WRITE_TOUT);
- return 1;
- }
- }
-
-#endif
- return 0;
-}
-#endif
-
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- * 4 - Flash not identified
- */
-int
-write_buff(flash_info_t *info_p, uchar *src_p, ulong addr, ulong count)
-{
- int rc = 0;
-#ifdef CFG_GEN860T_FLASH_USE_WRITE_BUFFER
-#define FLASH_WRITE_BUF_SIZE 0x00000020 /* 32 bytes */
- int i;
- uint bufs;
- ulong buf_count;
- vu_char *sp;
- vu_char *dp;
-#else
- ulong wp;
-#endif
-
- PRINTF("\n%s:%d: src: 0x%.8lx dest: 0x%.8lx size: %d (0x%.8lx)\n",
- __FUNCTION__, __LINE__, (ulong)src_p, addr, (uint)count, count);
-
- if (info_p->flash_id == FLASH_UNKNOWN) {
- return 4;
- }
-
-#ifdef CFG_GEN860T_FLASH_USE_WRITE_BUFFER
- sp = src_p;
- dp = (uchar *)addr;
-
- /*
- * For maximum performance, we want to align the start address to
- * the beginning of a write buffer boundary (i.e. A4-A0 of the
- * start address = 0). See how many bytes are required to get to a
- * write-buffer-aligned address. If that number is non-zero, do
- * non buffered writes of the non-aligned data. By doing non-buffered
- * writes, we avoid the problem of crossing a block (sector) boundary
- * with buffered writes.
- */
- buf_count = FLASH_WRITE_BUF_SIZE - (addr & (FLASH_WRITE_BUF_SIZE - 1));
- if (buf_count == FLASH_WRITE_BUF_SIZE) { /* already on a boundary */
- buf_count = 0;
- }
- if (buf_count > count) { /* not a full buffers worth of data to write */
- buf_count = count;
- }
- count -= buf_count;
-
- PRINTF("%s:%d: Write buffer alignment count = %ld\n",
- __FUNCTION__, __LINE__, buf_count);
- while (buf_count-- >= 1) {
- if ((rc = write_data8(info_p, (ulong)dp++, *sp++)) != 0) {
- return (rc);
- }
- }
-
- PRINTF("%s:%d: count = %ld\n", __FUNCTION__, __LINE__, count);
- if (count == 0) { /* all done */
- PRINTF("%s:%d: Less than 1 buffer (%d) worth of bytes\n",
- __FUNCTION__, __LINE__, FLASH_WRITE_BUF_SIZE);
- return (rc);
- }
-
- /*
- * Now that we are write buffer aligned, write full or partial buffers.
- * The fact that we are write buffer aligned automatically avoids
- * crossing a block address during a write buffer operation.
- */
- bufs = count / FLASH_WRITE_BUF_SIZE;
- PRINTF("%s:%d: %d (0x%x) buffers to write\n", __FUNCTION__, __LINE__,
- bufs, bufs);
- while (bufs >= 1) {
- rc = write_flash_buffer8(info_p, sp, dp, FLASH_WRITE_BUF_SIZE);
- if (rc != 0) {
- PRINTF("%s:%d: ** Error writing buf %d\n",
- __FUNCTION__, __LINE__, bufs);
- return (rc);
- }
- bufs--;
- sp += FLASH_WRITE_BUF_SIZE;
- dp += FLASH_WRITE_BUF_SIZE;
- }
-
- /*
- * Do the leftovers
- */
- i = count % FLASH_WRITE_BUF_SIZE;
- PRINTF("%s:%d: %d (0x%x) leftover bytes\n", __FUNCTION__, __LINE__, i, i);
- if (i > 0) {
- rc = write_flash_buffer8(info_p, sp, dp, i);
- }
-
- sp = (vu_char*)info_p->start[0];
- *sp = SCS_READ_CMD;
- return (rc);
-
-#else
- wp = addr;
- while (count-- >= 1) {
- if((rc = write_data8(info_p, wp++, *src_p++)) != 0)
- return (rc);
- }
- return 0;
-#endif
-}
-
-
-/*-----------------------------------------------------------------------
- * Write a byte to Flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-static int
-write_data8 (flash_info_t *info, ulong dest, uchar data)
-{
- vu_char *addr = (vu_char *)dest;
- vu_char status;
- ulong start;
- int flag;
-
- /* Check if Flash is (sufficiently) erased */
- if ((*addr & data) != data) {
- return (2);
- }
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- *addr = SCS_PROGRAM_CMD;
- *addr = data;
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- start = get_timer (0);
-
- while (((status = *addr) & SCS_SR7) != SCS_SR7) {
- if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
- *addr = SCS_READ_CMD;
- return (1);
- }
- }
- *addr = SCS_READ_CMD;
- return (0);
-}
-
-/* vim: set ts=4 sw=4 tw=78: */
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-25 22:42:54 +0000