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/*
* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <assert.h>
#include <debug.h>
#include <emmc.h>
#include <errno.h>
#include <firmware_image_package.h>
#include <io_block.h>
#include <io_driver.h>
#include <io_fip.h>
#include <io_memmap.h>
#include <io_storage.h>
#include <mmio.h>
#include <platform_def.h>
#include <semihosting.h> /* For FOPEN_MODE_... */
#include <string.h>
#include "hikey_private.h"
#define EMMC_BLOCK_SHIFT 9
/* Page 1024, since only a few pages before 2048 are used as partition table */
#define SERIALNO_EMMC_OFFSET (1024 * 512)
struct plat_io_policy {
uintptr_t *dev_handle;
uintptr_t image_spec;
int (*check)(const uintptr_t spec);
};
static const io_dev_connector_t *emmc_dev_con;
static uintptr_t emmc_dev_handle;
static const io_dev_connector_t *fip_dev_con;
static uintptr_t fip_dev_handle;
static int check_emmc(const uintptr_t spec);
static int check_fip(const uintptr_t spec);
static const io_block_spec_t emmc_fip_spec = {
.offset = HIKEY_FIP_BASE,
.length = HIKEY_FIP_MAX_SIZE,
};
static const io_block_dev_spec_t emmc_dev_spec = {
/* It's used as temp buffer in block driver. */
#ifdef IMAGE_BL1
.buffer = {
.offset = HIKEY_BL1_MMC_DATA_BASE,
.length = HIKEY_BL1_MMC_DATA_SIZE,
},
#else
.buffer = {
.offset = HIKEY_MMC_DATA_BASE,
.length = HIKEY_MMC_DATA_SIZE,
},
#endif
.ops = {
.read = emmc_read_blocks,
.write = emmc_write_blocks,
},
.block_size = EMMC_BLOCK_SIZE,
};
static const io_uuid_spec_t bl31_uuid_spec = {
.uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31,
};
static const io_uuid_spec_t bl32_uuid_spec = {
.uuid = UUID_SECURE_PAYLOAD_BL32,
};
static const io_uuid_spec_t bl32_extra1_uuid_spec = {
.uuid = UUID_SECURE_PAYLOAD_BL32_EXTRA1,
};
static const io_uuid_spec_t bl32_extra2_uuid_spec = {
.uuid = UUID_SECURE_PAYLOAD_BL32_EXTRA2,
};
static const io_uuid_spec_t bl33_uuid_spec = {
.uuid = UUID_NON_TRUSTED_FIRMWARE_BL33,
};
static const io_uuid_spec_t scp_bl2_uuid_spec = {
.uuid = UUID_SCP_FIRMWARE_SCP_BL2,
};
static const struct plat_io_policy policies[] = {
[FIP_IMAGE_ID] = {
&emmc_dev_handle,
(uintptr_t)&emmc_fip_spec,
check_emmc
},
[SCP_BL2_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&scp_bl2_uuid_spec,
check_fip
},
[BL31_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&bl31_uuid_spec,
check_fip
},
[BL32_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&bl32_uuid_spec,
check_fip
},
[BL32_EXTRA1_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&bl32_extra1_uuid_spec,
check_fip
},
[BL32_EXTRA2_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&bl32_extra2_uuid_spec,
check_fip
},
[BL33_IMAGE_ID] = {
&fip_dev_handle,
(uintptr_t)&bl33_uuid_spec,
check_fip
}
};
static int check_emmc(const uintptr_t spec)
{
int result;
uintptr_t local_handle;
result = io_dev_init(emmc_dev_handle, (uintptr_t)NULL);
if (result == 0) {
result = io_open(emmc_dev_handle, spec, &local_handle);
if (result == 0)
io_close(local_handle);
}
return result;
}
static int check_fip(const uintptr_t spec)
{
int result;
uintptr_t local_image_handle;
/* See if a Firmware Image Package is available */
result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID);
if (result == 0) {
result = io_open(fip_dev_handle, spec, &local_image_handle);
if (result == 0) {
VERBOSE("Using FIP\n");
io_close(local_image_handle);
}
}
return result;
}
void hikey_io_setup(void)
{
int result;
result = register_io_dev_block(&emmc_dev_con);
assert(result == 0);
result = register_io_dev_fip(&fip_dev_con);
assert(result == 0);
result = io_dev_open(emmc_dev_con, (uintptr_t)&emmc_dev_spec,
&emmc_dev_handle);
assert(result == 0);
result = io_dev_open(fip_dev_con, (uintptr_t)NULL, &fip_dev_handle);
assert(result == 0);
/* Ignore improbable errors in release builds */
(void)result;
}
/* 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 result;
const struct plat_io_policy *policy;
assert(image_id < ARRAY_SIZE(policies));
policy = &policies[image_id];
result = policy->check(policy->image_spec);
assert(result == 0);
*image_spec = policy->image_spec;
*dev_handle = *(policy->dev_handle);
return result;
}
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