blob: 45a352e0c5a12434cb97f24df0722463e8094f89 [file] [log] [blame]
/*
* Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <string.h>
#include <platform_def.h>
#include <arch_helpers.h>
#include <common/debug.h>
#include <drivers/io/io_block.h>
#include <drivers/io/io_driver.h>
#include <drivers/io/io_dummy.h>
#include <drivers/io/io_storage.h>
#include <drivers/mmc.h>
#include <drivers/partition/partition.h>
#include <drivers/st/io_mmc.h>
#include <drivers/st/io_stm32image.h>
#include <drivers/st/stm32_sdmmc2.h>
#include <drivers/st/stm32mp1_rcc.h>
#include <lib/mmio.h>
#include <lib/utils.h>
#include <plat/common/platform.h>
#include <boot_api.h>
#include <stm32mp1_private.h>
/* IO devices */
static const io_dev_connector_t *dummy_dev_con;
static uintptr_t dummy_dev_handle;
static uintptr_t dummy_dev_spec;
static uintptr_t image_dev_handle;
static io_block_spec_t gpt_block_spec = {
.offset = 0,
.length = 34 * MMC_BLOCK_SIZE, /* Size of GPT table */
};
static uint32_t block_buffer[MMC_BLOCK_SIZE] __aligned(MMC_BLOCK_SIZE);
static const io_block_dev_spec_t mmc_block_dev_spec = {
/* It's used as temp buffer in block driver */
.buffer = {
.offset = (size_t)&block_buffer,
.length = MMC_BLOCK_SIZE,
},
.ops = {
.read = mmc_read_blocks,
.write = NULL,
},
.block_size = MMC_BLOCK_SIZE,
};
static uintptr_t storage_dev_handle;
static const io_dev_connector_t *mmc_dev_con;
#define IMG_IDX_BL33 0
static const struct stm32image_part_info bl33_partition_spec = {
.name = BL33_IMAGE_NAME,
.binary_type = BL33_BINARY_TYPE,
};
static struct stm32image_device_info stm32image_dev_info_spec = {
.lba_size = MMC_BLOCK_SIZE,
.part_info[IMG_IDX_BL33] = {
.name = BL33_IMAGE_NAME,
.binary_type = BL33_BINARY_TYPE,
},
};
static io_block_spec_t stm32image_block_spec;
static const io_dev_connector_t *stm32image_dev_con;
static const io_block_spec_t bl32_block_spec = {
.offset = BL32_BASE,
.length = STM32MP1_BL32_SIZE
};
static const io_block_spec_t bl2_block_spec = {
.offset = BL2_BASE,
.length = STM32MP1_BL2_SIZE,
};
static int open_dummy(const uintptr_t spec);
static int open_image(const uintptr_t spec);
static int open_storage(const uintptr_t spec);
struct plat_io_policy {
uintptr_t *dev_handle;
uintptr_t image_spec;
int (*check)(const uintptr_t spec);
};
static const struct plat_io_policy policies[] = {
[BL2_IMAGE_ID] = {
.dev_handle = &dummy_dev_handle,
.image_spec = (uintptr_t)&bl2_block_spec,
.check = open_dummy
},
[BL32_IMAGE_ID] = {
.dev_handle = &dummy_dev_handle,
.image_spec = (uintptr_t)&bl32_block_spec,
.check = open_dummy
},
[BL33_IMAGE_ID] = {
.dev_handle = &image_dev_handle,
.image_spec = (uintptr_t)&bl33_partition_spec,
.check = open_image
},
[GPT_IMAGE_ID] = {
.dev_handle = &storage_dev_handle,
.image_spec = (uintptr_t)&gpt_block_spec,
.check = open_storage
},
[STM32_IMAGE_ID] = {
.dev_handle = &storage_dev_handle,
.image_spec = (uintptr_t)&stm32image_block_spec,
.check = open_storage
}
};
static int open_dummy(const uintptr_t spec)
{
return io_dev_init(dummy_dev_handle, 0);
}
static int open_image(const uintptr_t spec)
{
return io_dev_init(image_dev_handle, 0);
}
static int open_storage(const uintptr_t spec)
{
return io_dev_init(storage_dev_handle, 0);
}
static void print_boot_device(boot_api_context_t *boot_context)
{
switch (boot_context->boot_interface_selected) {
case BOOT_API_CTX_BOOT_INTERFACE_SEL_FLASH_SD:
INFO("Using SDMMC\n");
break;
case BOOT_API_CTX_BOOT_INTERFACE_SEL_FLASH_EMMC:
INFO("Using EMMC\n");
break;
default:
ERROR("Boot interface not found\n");
panic();
break;
}
if (boot_context->boot_interface_instance != 0U) {
INFO(" Instance %d\n", boot_context->boot_interface_instance);
}
}
static void print_reset_reason(void)
{
uint32_t rstsr = mmio_read_32(RCC_BASE + RCC_MP_RSTSCLRR);
if (rstsr == 0U) {
WARN("Reset reason unknown\n");
return;
}
INFO("Reset reason (0x%x):\n", rstsr);
if ((rstsr & RCC_MP_RSTSCLRR_PADRSTF) == 0U) {
if ((rstsr & RCC_MP_RSTSCLRR_STDBYRSTF) != 0U) {
INFO("System exits from STANDBY\n");
return;
}
if ((rstsr & RCC_MP_RSTSCLRR_CSTDBYRSTF) != 0U) {
INFO("MPU exits from CSTANDBY\n");
return;
}
}
if ((rstsr & RCC_MP_RSTSCLRR_PORRSTF) != 0U) {
INFO(" Power-on Reset (rst_por)\n");
return;
}
if ((rstsr & RCC_MP_RSTSCLRR_BORRSTF) != 0U) {
INFO(" Brownout Reset (rst_bor)\n");
return;
}
if ((rstsr & RCC_MP_RSTSCLRR_MPSYSRSTF) != 0U) {
INFO(" System reset generated by MPU (MPSYSRST)\n");
return;
}
if ((rstsr & RCC_MP_RSTSCLRR_HCSSRSTF) != 0U) {
INFO(" Reset due to a clock failure on HSE\n");
return;
}
if ((rstsr & RCC_MP_RSTSCLRR_IWDG1RSTF) != 0U) {
INFO(" IWDG1 Reset (rst_iwdg1)\n");
return;
}
if ((rstsr & RCC_MP_RSTSCLRR_IWDG2RSTF) != 0U) {
INFO(" IWDG2 Reset (rst_iwdg2)\n");
return;
}
if ((rstsr & RCC_MP_RSTSCLRR_PADRSTF) != 0U) {
INFO(" Pad Reset from NRST\n");
return;
}
if ((rstsr & RCC_MP_RSTSCLRR_VCORERSTF) != 0U) {
INFO(" Reset due to a failure of VDD_CORE\n");
return;
}
ERROR(" Unidentified reset reason\n");
}
void stm32mp1_io_setup(void)
{
int io_result __unused;
struct stm32_sdmmc2_params params;
struct mmc_device_info device_info;
uintptr_t mmc_default_instance;
boot_api_context_t *boot_context =
(boot_api_context_t *)stm32mp1_get_boot_ctx_address();
print_reset_reason();
print_boot_device(boot_context);
if ((boot_context->boot_partition_used_toboot == 1U) ||
(boot_context->boot_partition_used_toboot == 2U)) {
INFO("Boot used partition fsbl%d\n",
boot_context->boot_partition_used_toboot);
}
io_result = register_io_dev_dummy(&dummy_dev_con);
assert(io_result == 0);
io_result = io_dev_open(dummy_dev_con, dummy_dev_spec,
&dummy_dev_handle);
assert(io_result == 0);
switch (boot_context->boot_interface_selected) {
case BOOT_API_CTX_BOOT_INTERFACE_SEL_FLASH_SD:
case BOOT_API_CTX_BOOT_INTERFACE_SEL_FLASH_EMMC:
dmb();
memset(&params, 0, sizeof(struct stm32_sdmmc2_params));
if (boot_context->boot_interface_selected ==
BOOT_API_CTX_BOOT_INTERFACE_SEL_FLASH_EMMC) {
device_info.mmc_dev_type = MMC_IS_EMMC;
mmc_default_instance = STM32MP1_SDMMC2_BASE;
} else {
device_info.mmc_dev_type = MMC_IS_SD;
mmc_default_instance = STM32MP1_SDMMC1_BASE;
}
switch (boot_context->boot_interface_instance) {
case 1:
params.reg_base = STM32MP1_SDMMC1_BASE;
break;
case 2:
params.reg_base = STM32MP1_SDMMC2_BASE;
break;
case 3:
params.reg_base = STM32MP1_SDMMC3_BASE;
break;
default:
WARN("SDMMC instance not found, using default\n");
params.reg_base = mmc_default_instance;
break;
}
params.device_info = &device_info;
if (stm32_sdmmc2_mmc_init(&params) != 0) {
ERROR("SDMMC%u init failed\n",
boot_context->boot_interface_instance);
panic();
}
/* Open MMC as a block device to read GPT table */
io_result = register_io_dev_block(&mmc_dev_con);
if (io_result != 0) {
panic();
}
io_result = io_dev_open(mmc_dev_con,
(uintptr_t)&mmc_block_dev_spec,
&storage_dev_handle);
assert(io_result == 0);
partition_init(GPT_IMAGE_ID);
io_result = io_dev_close(storage_dev_handle);
assert(io_result == 0);
stm32image_dev_info_spec.device_size =
stm32_sdmmc2_mmc_get_device_size();
stm32image_dev_info_spec.part_info[IMG_IDX_BL33].part_offset =
get_partition_entry(BL33_IMAGE_NAME)->start;
stm32image_dev_info_spec.part_info[IMG_IDX_BL33].bkp_offset =
get_partition_entry(BL33_IMAGE_NAME)->length;
stm32image_block_spec.offset = 0;
stm32image_block_spec.length =
get_partition_entry(BL33_IMAGE_NAME)->length;
/*
* Re-open MMC with io_mmc, for better perfs compared to
* io_block.
*/
io_result = register_io_dev_mmc(&mmc_dev_con);
assert(io_result == 0);
io_result = io_dev_open(mmc_dev_con, 0, &storage_dev_handle);
assert(io_result == 0);
io_result = register_io_dev_stm32image(&stm32image_dev_con);
assert(io_result == 0);
io_result = io_dev_open(stm32image_dev_con,
(uintptr_t)&stm32image_dev_info_spec,
&image_dev_handle);
assert(io_result == 0);
break;
default:
ERROR("Boot interface %d not supported\n",
boot_context->boot_interface_selected);
break;
}
}
/*
* Return an IO device handle and specification which can be used to access
* an image. Use this to enforce platform load policy.
*/
int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle,
uintptr_t *image_spec)
{
int rc;
const struct plat_io_policy *policy;
assert(image_id < ARRAY_SIZE(policies));
policy = &policies[image_id];
rc = policy->check(policy->image_spec);
if (rc == 0) {
*image_spec = policy->image_spec;
*dev_handle = *(policy->dev_handle);
}
return rc;
}