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// SPDX-License-Identifier: GPL-2.0+
/*
* CPSW common - libs used across TI ethernet devices.
*
* Copyright (C) 2016, Texas Instruments, Incorporated
*/
#include <common.h>
#include <dm.h>
#include <fdt_support.h>
#include <asm/io.h>
#include <cpsw.h>
DECLARE_GLOBAL_DATA_PTR;
#define CTRL_MAC_REG(offset, id) ((offset) + 0x8 * (id))
static void davinci_emac_3517_get_macid(u32 addr, u8 *mac_addr)
{
/* try reading mac address from efuse */
u32 macid_lsb = readl(addr);
u32 macid_msb = readl(addr + 4);
mac_addr[0] = (macid_msb >> 16) & 0xff;
mac_addr[1] = (macid_msb >> 8) & 0xff;
mac_addr[2] = macid_msb & 0xff;
mac_addr[3] = (macid_lsb >> 16) & 0xff;
mac_addr[4] = (macid_lsb >> 8) & 0xff;
mac_addr[5] = macid_lsb & 0xff;
}
static void cpsw_am33xx_cm_get_macid(u32 addr, u8 *mac_addr)
{
/* try reading mac address from efuse */
u32 macid_lo = readl(addr);
u32 macid_hi = readl(addr + 4);
mac_addr[5] = (macid_lo >> 8) & 0xff;
mac_addr[4] = macid_lo & 0xff;
mac_addr[3] = (macid_hi >> 24) & 0xff;
mac_addr[2] = (macid_hi >> 16) & 0xff;
mac_addr[1] = (macid_hi >> 8) & 0xff;
mac_addr[0] = macid_hi & 0xff;
}
void ti_cm_get_macid(struct udevice *dev, struct cpsw_platform_data *data,
u8 *mac_addr)
{
if (!strcmp(data->macid_sel_compat, "cpsw,am33xx"))
cpsw_am33xx_cm_get_macid(data->syscon_addr, mac_addr);
else if (!strcmp(data->macid_sel_compat, "davinci,emac"))
davinci_emac_3517_get_macid(data->syscon_addr, mac_addr);
}
int ti_cm_get_macid_addr(struct udevice *dev, int slave,
struct cpsw_platform_data *data)
{
void *fdt = (void *)gd->fdt_blob;
int node = dev_of_offset(dev);
fdt32_t gmii = 0;
int syscon;
u16 offset;
if (of_machine_is_compatible("ti,dm8148")) {
offset = 0x630;
data->macid_sel_compat = "cpsw,am33xx";
} else if (of_machine_is_compatible("ti,am33xx")) {
offset = 0x630;
data->macid_sel_compat = "cpsw,am33xx";
} else if (device_is_compatible(dev, "ti,am3517-emac")) {
offset = 0x110;
data->macid_sel_compat = "davinci,emac";
} else if (device_is_compatible(dev, "ti,dm816-emac")) {
offset = 0x30;
data->macid_sel_compat = "cpsw,am33xx";
} else if (of_machine_is_compatible("ti,am43")) {
offset = 0x630;
data->macid_sel_compat = "cpsw,am33xx";
} else if (of_machine_is_compatible("ti,dra7")) {
offset = 0x514;
data->macid_sel_compat = "davinci,emac";
} else {
dev_err(dev, "incompatible machine/device type for reading mac address\n");
return -ENOENT;
}
syscon = fdtdec_lookup_phandle(fdt, node, "syscon");
if (syscon < 0) {
pr_err("Syscon offset not found\n");
return -ENOENT;
}
data->syscon_addr = (u32)map_physmem(fdt_translate_address(fdt, syscon,
&gmii),
sizeof(u32), MAP_NOCACHE);
if (data->syscon_addr == FDT_ADDR_T_NONE) {
pr_err("Not able to get syscon address to get mac efuse address\n");
return -ENOENT;
}
data->syscon_addr += CTRL_MAC_REG(offset, slave);
return 0;
}
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