soc.c
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/*
* (C) Copyright 2007
* Sascha Hauer, Pengutronix
*
* (C) Copyright 2009 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <asm/errno.h>
#include <asm/io.h>
#include <asm/imx-common/boot_mode.h>
#if !(defined(CONFIG_MX51) || defined(CONFIG_MX53))
#error "CPU_TYPE not defined"
#endif
u32 get_cpu_rev(void)
{
#ifdef CONFIG_MX51
int system_rev = 0x51000;
#else
int system_rev = 0x53000;
#endif
int reg = __raw_readl(ROM_SI_REV);
#if defined(CONFIG_MX51)
switch (reg) {
case 0x02:
system_rev |= CHIP_REV_1_1;
break;
case 0x10:
if ((__raw_readl(GPIO1_BASE_ADDR + 0x0) & (0x1 << 22)) == 0)
system_rev |= CHIP_REV_2_5;
else
system_rev |= CHIP_REV_2_0;
break;
case 0x20:
system_rev |= CHIP_REV_3_0;
break;
default:
system_rev |= CHIP_REV_1_0;
break;
}
#else
if (reg < 0x20)
system_rev |= CHIP_REV_1_0;
else
system_rev |= reg;
#endif
return system_rev;
}
#ifdef CONFIG_REVISION_TAG
u32 __weak get_board_rev(void)
{
return get_cpu_rev();
}
#endif
#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
{
/* Enable D-cache. I-cache is already enabled in start.S */
dcache_enable();
}
#endif
#if defined(CONFIG_FEC_MXC)
void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
{
int i;
struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
struct fuse_bank *bank = &iim->bank[1];
struct fuse_bank1_regs *fuse =
(struct fuse_bank1_regs *)bank->fuse_regs;
for (i = 0; i < 6; i++)
mac[i] = readl(&fuse->mac_addr[i]) & 0xff;
}
#endif
#ifdef CONFIG_MX53
void boot_mode_apply(unsigned cfg_val)
{
writel(cfg_val, &((struct srtc_regs *)SRTC_BASE_ADDR)->lpgr);
}
/*
* cfg_val will be used for
* Boot_cfg3[7:0]:Boot_cfg2[7:0]:Boot_cfg1[7:0]
*
* If bit 28 of LPGR is set upon watchdog reset,
* bits[25:0] of LPGR will move to SBMR.
*/
const struct boot_mode soc_boot_modes[] = {
{"normal", MAKE_CFGVAL(0x00, 0x00, 0x00, 0x00)},
/* usb or serial download */
{"usb", MAKE_CFGVAL(0x00, 0x00, 0x00, 0x13)},
{"sata", MAKE_CFGVAL(0x28, 0x00, 0x00, 0x12)},
{"escpi1:0", MAKE_CFGVAL(0x38, 0x20, 0x00, 0x12)},
{"escpi1:1", MAKE_CFGVAL(0x38, 0x20, 0x04, 0x12)},
{"escpi1:2", MAKE_CFGVAL(0x38, 0x20, 0x08, 0x12)},
{"escpi1:3", MAKE_CFGVAL(0x38, 0x20, 0x0c, 0x12)},
/* 4 bit bus width */
{"esdhc1", MAKE_CFGVAL(0x40, 0x20, 0x00, 0x12)},
{"esdhc2", MAKE_CFGVAL(0x40, 0x20, 0x08, 0x12)},
{"esdhc3", MAKE_CFGVAL(0x40, 0x20, 0x10, 0x12)},
{"esdhc4", MAKE_CFGVAL(0x40, 0x20, 0x18, 0x12)},
{NULL, 0},
};
#endif