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feat(plat/st): implement platform functions for SMCCC_ARCH_SOC_ID 

The JEDEC information for STMicroelectronics is:
JEDEC_ST_MFID U(0x20)
JEDEC_ST_BKID U(0x0)
And rely on platform functions to get chip IP and revision.

Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: I4fa4ac8bb5583b1871b768decc9fe08e8966ff54
This commit is contained in:
Yann Gautier 2021-03-08 15:03:35 +01:00
parent 92661e01cf
commit 3d201787e8
2 changed files with 39 additions and 1 deletions
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3
plat/st/common/include/stm32mp_common.h
View File

@ -11,6 +11,9 @@
#include <platform_def.h>
#define JEDEC_ST_BKID U(0x0)
#define JEDEC_ST_MFID U(0x20)
/* Functions to save and get boot context address given by ROM code */
void stm32mp_save_boot_ctx_address(uintptr_t address);
uintptr_t stm32mp_get_boot_ctx_address(void);

37
plat/st/common/stm32mp_common.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -12,8 +12,10 @@
#include <arch_helpers.h>
#include <common/debug.h>
#include <drivers/st/stm32mp_clkfunc.h>
#include <lib/smccc.h>
#include <lib/xlat_tables/xlat_tables_v2.h>
#include <plat/common/platform.h>
#include <services/arm_arch_svc.h>
uintptr_t plat_get_ns_image_entrypoint(void)
{
@ -111,3 +113,36 @@ int stm32mp_unmap_ddr(void)
return mmap_remove_dynamic_region(STM32MP_DDR_BASE,
STM32MP_DDR_MAX_SIZE);
}
/*****************************************************************************
* plat_is_smccc_feature_available() - This function checks whether SMCCC
* feature is availabile for platform.
* @fid: SMCCC function id
*
* Return SMC_ARCH_CALL_SUCCESS if SMCCC feature is available and
* SMC_ARCH_CALL_NOT_SUPPORTED otherwise.
*****************************************************************************/
int32_t plat_is_smccc_feature_available(u_register_t fid)
{
switch (fid) {
case SMCCC_ARCH_SOC_ID:
return SMC_ARCH_CALL_SUCCESS;
default:
return SMC_ARCH_CALL_NOT_SUPPORTED;
}
}
/* Get SOC version */
int32_t plat_get_soc_version(void)
{
uint32_t chip_id = stm32mp_get_chip_dev_id();
uint32_t manfid = SOC_ID_SET_JEP_106(JEDEC_ST_BKID, JEDEC_ST_MFID);
return (int32_t)(manfid | (chip_id & SOC_ID_IMPL_DEF_MASK));
}
/* Get SOC revision */
int32_t plat_get_soc_revision(void)
{
return (int32_t)(stm32mp_get_chip_version() & SOC_ID_REV_MASK);
}