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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015-2017 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <command.h>
#include <spl.h>
#include <stdio.h>
#include <linux/bitops.h>
#include <linux/bug.h>
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/log2.h>
#include "../init.h"
#include "../sg-regs.h"
#include "../soc-info.h"
#include "boot-device.h"
#define SBBASE0 0x58c00100
#define SBBASE_BANK_ENABLE BIT(0)
static int uniphier_sbc_boot_is_swapped(void)
{
return !(readl(SBBASE0) & SBBASE_BANK_ENABLE);
}
struct uniphier_boot_device_info {
unsigned int soc_id;
unsigned int boot_device_sel_shift;
const struct uniphier_boot_device *boot_device_table;
const unsigned int *boot_device_count;
int (*boot_device_is_sd)(u32 pinmon);
int (*boot_device_is_usb)(u32 pinmon);
unsigned int (*boot_device_fixup)(unsigned int mode);
int (*boot_is_swapped)(void);
bool have_internal_stm;
};
static const struct uniphier_boot_device_info uniphier_boot_device_info[] = {
#if defined(CONFIG_ARCH_UNIPHIER_LD4)
{
.soc_id = UNIPHIER_LD4_ID,
.boot_device_sel_shift = 1,
.boot_device_table = uniphier_ld4_boot_device_table,
.boot_device_count = &uniphier_ld4_boot_device_count,
.boot_is_swapped = uniphier_sbc_boot_is_swapped,
.have_internal_stm = true,
},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PRO4)
{
.soc_id = UNIPHIER_PRO4_ID,
.boot_device_sel_shift = 1,
.boot_device_table = uniphier_ld4_boot_device_table,
.boot_device_count = &uniphier_ld4_boot_device_count,
.boot_is_swapped = uniphier_sbc_boot_is_swapped,
.have_internal_stm = false,
},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_SLD8)
{
.soc_id = UNIPHIER_SLD8_ID,
.boot_device_sel_shift = 1,
.boot_device_table = uniphier_ld4_boot_device_table,
.boot_device_count = &uniphier_ld4_boot_device_count,
.boot_is_swapped = uniphier_sbc_boot_is_swapped,
.have_internal_stm = true,
},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PRO5)
{
.soc_id = UNIPHIER_PRO5_ID,
.boot_device_sel_shift = 1,
.boot_device_table = uniphier_pro5_boot_device_table,
.boot_device_count = &uniphier_pro5_boot_device_count,
.boot_is_swapped = uniphier_sbc_boot_is_swapped,
.have_internal_stm = false,
},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PXS2)
{
.soc_id = UNIPHIER_PXS2_ID,
.boot_device_sel_shift = 1,
.boot_device_table = uniphier_pxs2_boot_device_table,
.boot_device_count = &uniphier_pxs2_boot_device_count,
.boot_device_is_usb = uniphier_pxs2_boot_device_is_usb,
.boot_device_fixup = uniphier_pxs2_boot_device_fixup,
.boot_is_swapped = uniphier_sbc_boot_is_swapped,
.have_internal_stm = false,
},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD6B)
{
.soc_id = UNIPHIER_LD6B_ID,
.boot_device_sel_shift = 1,
.boot_device_table = uniphier_pxs2_boot_device_table,
.boot_device_count = &uniphier_pxs2_boot_device_count,
.boot_device_is_usb = uniphier_pxs2_boot_device_is_usb,
.boot_device_fixup = uniphier_pxs2_boot_device_fixup,
.boot_is_swapped = uniphier_sbc_boot_is_swapped,
.have_internal_stm = true, /* STM on A-chip */
},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD11)
{
.soc_id = UNIPHIER_LD11_ID,
.boot_device_sel_shift = 1,
.boot_device_table = uniphier_ld11_boot_device_table,
.boot_device_count = &uniphier_ld11_boot_device_count,
.boot_device_is_usb = uniphier_ld11_boot_device_is_usb,
.boot_is_swapped = uniphier_sbc_boot_is_swapped,
.have_internal_stm = true,
},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD20)
{
.soc_id = UNIPHIER_LD20_ID,
.boot_device_sel_shift = 1,
.boot_device_table = uniphier_ld11_boot_device_table,
.boot_device_count = &uniphier_ld11_boot_device_count,
.boot_device_is_usb = uniphier_ld20_boot_device_is_usb,
.boot_is_swapped = uniphier_sbc_boot_is_swapped,
.have_internal_stm = true,
},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PXS3)
{
.soc_id = UNIPHIER_PXS3_ID,
.boot_device_sel_shift = 1,
.boot_device_table = uniphier_pxs3_boot_device_table,
.boot_device_count = &uniphier_pxs3_boot_device_count,
.boot_device_is_usb = uniphier_pxs3_boot_device_is_usb,
.boot_is_swapped = uniphier_sbc_boot_is_swapped,
.have_internal_stm = false,
},
#endif
};
UNIPHIER_DEFINE_SOCDATA_FUNC(uniphier_get_boot_device_info,
uniphier_boot_device_info)
static unsigned int __uniphier_boot_device_raw(
const struct uniphier_boot_device_info *info)
{
u32 pinmon;
unsigned int boot_sel;
if (info->boot_is_swapped && info->boot_is_swapped())
return BOOT_DEVICE_NOR;
pinmon = readl(sg_base + SG_PINMON0);
if (info->boot_device_is_sd && info->boot_device_is_sd(pinmon))
return BOOT_DEVICE_MMC2;
if (info->boot_device_is_usb && info->boot_device_is_usb(pinmon))
return BOOT_DEVICE_USB;
boot_sel = pinmon >> info->boot_device_sel_shift;
BUG_ON(!is_power_of_2(*info->boot_device_count));
boot_sel &= *info->boot_device_count - 1;
return info->boot_device_table[boot_sel].boot_device;
}
unsigned int uniphier_boot_device_raw(void)
{
const struct uniphier_boot_device_info *info;
info = uniphier_get_boot_device_info();
if (!info) {
pr_err("unsupported SoC\n");
return BOOT_DEVICE_NONE;
}
return __uniphier_boot_device_raw(info);
}
u32 spl_boot_device(void)
{
const struct uniphier_boot_device_info *info;
u32 raw_mode;
info = uniphier_get_boot_device_info();
if (!info) {
pr_err("unsupported SoC\n");
return BOOT_DEVICE_NONE;
}
raw_mode = __uniphier_boot_device_raw(info);
return info->boot_device_fixup ?
info->boot_device_fixup(raw_mode) : raw_mode;
}
int uniphier_have_internal_stm(void)
{
const struct uniphier_boot_device_info *info;
info = uniphier_get_boot_device_info();
if (!info) {
pr_err("unsupported SoC\n");
return -ENOTSUPP;
}
return info->have_internal_stm;
}
int uniphier_boot_from_backend(void)
{
return !!(readl(sg_base + SG_PINMON0) & BIT(27));
}
#ifndef CONFIG_SPL_BUILD
static int do_pinmon(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
const struct uniphier_boot_device_info *info;
u32 pinmon;
unsigned int boot_device_count, boot_sel;
int i;
info = uniphier_get_boot_device_info();
if (!info) {
pr_err("unsupported SoC\n");
return CMD_RET_FAILURE;
}
if (uniphier_have_internal_stm())
printf("STB Micon: %s\n",
uniphier_boot_from_backend() ? "OFF" : "ON");
if (info->boot_is_swapped)
printf("Boot Swap: %s\n",
info->boot_is_swapped() ? "ON" : "OFF");
pinmon = readl(sg_base + SG_PINMON0);
if (info->boot_device_is_sd)
printf("SD Boot: %s\n",
info->boot_device_is_sd(pinmon) ? "ON" : "OFF");
if (info->boot_device_is_usb)
printf("USB Boot: %s\n",
info->boot_device_is_usb(pinmon) ? "ON" : "OFF");
boot_device_count = *info->boot_device_count;
boot_sel = pinmon >> info->boot_device_sel_shift;
boot_sel &= boot_device_count - 1;
printf("\nBoot Mode Sel:\n");
for (i = 0; i < boot_device_count; i++)
printf(" %c %02x %s\n", i == boot_sel ? '*' : ' ', i,
info->boot_device_table[i].desc);
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(
pinmon, 1, 1, do_pinmon,
"pin monitor",
""
);
#endif /* !CONFIG_SPL_BUILD */
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