blob: f842e163554ec3e4b3f6b4fc269dce1281ab6ef1 [file] [log] [blame]
/*
* Copyright (c) 2015-2023, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <errno.h>
#include <arch_helpers.h>
#include <common/debug.h>
#include <drivers/clk.h>
#include <drivers/delay_timer.h>
#include <drivers/st/stm32_console.h>
#include <drivers/st/stm32mp_clkfunc.h>
#include <drivers/st/stm32mp_reset.h>
#include <lib/mmio.h>
#include <lib/smccc.h>
#include <lib/xlat_tables/xlat_tables_v2.h>
#include <plat/common/platform.h>
#include <services/arm_arch_svc.h>
#include <platform_def.h>
#define HEADER_VERSION_MAJOR_MASK GENMASK(23, 16)
#define RESET_TIMEOUT_US_1MS 1000U
/* Internal layout of the 32bit OTP word board_id */
#define BOARD_ID_BOARD_NB_MASK GENMASK_32(31, 16)
#define BOARD_ID_BOARD_NB_SHIFT 16
#define BOARD_ID_VARCPN_MASK GENMASK_32(15, 12)
#define BOARD_ID_VARCPN_SHIFT 12
#define BOARD_ID_REVISION_MASK GENMASK_32(11, 8)
#define BOARD_ID_REVISION_SHIFT 8
#define BOARD_ID_VARFG_MASK GENMASK_32(7, 4)
#define BOARD_ID_VARFG_SHIFT 4
#define BOARD_ID_BOM_MASK GENMASK_32(3, 0)
#define BOARD_ID2NB(_id) (((_id) & BOARD_ID_BOARD_NB_MASK) >> \
BOARD_ID_BOARD_NB_SHIFT)
#define BOARD_ID2VARCPN(_id) (((_id) & BOARD_ID_VARCPN_MASK) >> \
BOARD_ID_VARCPN_SHIFT)
#define BOARD_ID2REV(_id) (((_id) & BOARD_ID_REVISION_MASK) >> \
BOARD_ID_REVISION_SHIFT)
#define BOARD_ID2VARFG(_id) (((_id) & BOARD_ID_VARFG_MASK) >> \
BOARD_ID_VARFG_SHIFT)
#define BOARD_ID2BOM(_id) ((_id) & BOARD_ID_BOM_MASK)
#define BOOT_AUTH_MASK GENMASK_32(23, 20)
#define BOOT_AUTH_SHIFT 20
#define BOOT_PART_MASK GENMASK_32(19, 16)
#define BOOT_PART_SHIFT 16
#define BOOT_ITF_MASK GENMASK_32(15, 12)
#define BOOT_ITF_SHIFT 12
#define BOOT_INST_MASK GENMASK_32(11, 8)
#define BOOT_INST_SHIFT 8
static console_t console;
uintptr_t plat_get_ns_image_entrypoint(void)
{
return BL33_BASE;
}
unsigned int plat_get_syscnt_freq2(void)
{
return read_cntfrq_el0();
}
static uintptr_t boot_ctx_address;
static uint16_t boot_itf_selected;
void stm32mp_save_boot_ctx_address(uintptr_t address)
{
boot_api_context_t *boot_context = (boot_api_context_t *)address;
boot_ctx_address = address;
boot_itf_selected = boot_context->boot_interface_selected;
}
uintptr_t stm32mp_get_boot_ctx_address(void)
{
return boot_ctx_address;
}
uint16_t stm32mp_get_boot_itf_selected(void)
{
return boot_itf_selected;
}
uintptr_t stm32mp_ddrctrl_base(void)
{
return DDRCTRL_BASE;
}
uintptr_t stm32mp_ddrphyc_base(void)
{
return DDRPHYC_BASE;
}
uintptr_t stm32mp_pwr_base(void)
{
return PWR_BASE;
}
uintptr_t stm32mp_rcc_base(void)
{
return RCC_BASE;
}
bool stm32mp_lock_available(void)
{
const uint32_t c_m_bits = SCTLR_M_BIT | SCTLR_C_BIT;
/* The spinlocks are used only when MMU and data cache are enabled */
return (read_sctlr() & c_m_bits) == c_m_bits;
}
int stm32mp_map_ddr_non_cacheable(void)
{
return mmap_add_dynamic_region(STM32MP_DDR_BASE, STM32MP_DDR_BASE,
STM32MP_DDR_MAX_SIZE,
MT_NON_CACHEABLE | MT_RW | MT_SECURE);
}
int stm32mp_unmap_ddr(void)
{
return mmap_remove_dynamic_region(STM32MP_DDR_BASE,
STM32MP_DDR_MAX_SIZE);
}
int stm32_get_otp_index(const char *otp_name, uint32_t *otp_idx,
uint32_t *otp_len)
{
assert(otp_name != NULL);
assert(otp_idx != NULL);
return dt_find_otp_name(otp_name, otp_idx, otp_len);
}
int stm32_get_otp_value(const char *otp_name, uint32_t *otp_val)
{
uint32_t otp_idx;
assert(otp_name != NULL);
assert(otp_val != NULL);
if (stm32_get_otp_index(otp_name, &otp_idx, NULL) != 0) {
return -1;
}
if (stm32_get_otp_value_from_idx(otp_idx, otp_val) != 0) {
ERROR("BSEC: %s Read Error\n", otp_name);
return -1;
}
return 0;
}
int stm32_get_otp_value_from_idx(const uint32_t otp_idx, uint32_t *otp_val)
{
uint32_t ret = BSEC_NOT_SUPPORTED;
assert(otp_val != NULL);
#if defined(IMAGE_BL2)
ret = bsec_shadow_read_otp(otp_val, otp_idx);
#elif defined(IMAGE_BL32)
ret = bsec_read_otp(otp_val, otp_idx);
#else
#error "Not supported"
#endif
if (ret != BSEC_OK) {
ERROR("BSEC: idx=%u Read Error\n", otp_idx);
return -1;
}
return 0;
}
#if defined(IMAGE_BL2)
static void reset_uart(uint32_t reset)
{
int ret;
ret = stm32mp_reset_assert(reset, RESET_TIMEOUT_US_1MS);
if (ret != 0) {
panic();
}
udelay(2);
ret = stm32mp_reset_deassert(reset, RESET_TIMEOUT_US_1MS);
if (ret != 0) {
panic();
}
mdelay(1);
}
#endif
static void set_console(uintptr_t base, uint32_t clk_rate)
{
unsigned int console_flags;
if (console_stm32_register(base, clk_rate,
(uint32_t)STM32MP_UART_BAUDRATE, &console) == 0) {
panic();
}
console_flags = CONSOLE_FLAG_BOOT | CONSOLE_FLAG_CRASH |
CONSOLE_FLAG_TRANSLATE_CRLF;
#if !defined(IMAGE_BL2) && defined(DEBUG)
console_flags |= CONSOLE_FLAG_RUNTIME;
#endif
console_set_scope(&console, console_flags);
}
int stm32mp_uart_console_setup(void)
{
struct dt_node_info dt_uart_info;
uint32_t clk_rate = 0U;
int result;
uint32_t boot_itf __unused;
uint32_t boot_instance __unused;
result = dt_get_stdout_uart_info(&dt_uart_info);
if ((result <= 0) ||
(dt_uart_info.status == DT_DISABLED)) {
return -ENODEV;
}
#if defined(IMAGE_BL2)
if ((dt_uart_info.clock < 0) ||
(dt_uart_info.reset < 0)) {
return -ENODEV;
}
#endif
#if STM32MP_UART_PROGRAMMER || !defined(IMAGE_BL2)
stm32_get_boot_interface(&boot_itf, &boot_instance);
if ((boot_itf == BOOT_API_CTX_BOOT_INTERFACE_SEL_SERIAL_UART) &&
(get_uart_address(boot_instance) == dt_uart_info.base)) {
return -EACCES;
}
#endif
#if defined(IMAGE_BL2)
if (dt_set_stdout_pinctrl() != 0) {
return -ENODEV;
}
clk_enable((unsigned long)dt_uart_info.clock);
reset_uart((uint32_t)dt_uart_info.reset);
clk_rate = clk_get_rate((unsigned long)dt_uart_info.clock);
#endif
set_console(dt_uart_info.base, clk_rate);
return 0;
}
#if STM32MP_EARLY_CONSOLE
void stm32mp_setup_early_console(void)
{
#if defined(IMAGE_BL2) || STM32MP_RECONFIGURE_CONSOLE
plat_crash_console_init();
#endif
set_console(STM32MP_DEBUG_USART_BASE, STM32MP_DEBUG_USART_CLK_FRQ);
NOTICE("Early console setup\n");
}
#endif /* STM32MP_EARLY_CONSOLE */
/*****************************************************************************
* 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);
}
void stm32_display_board_info(uint32_t board_id)
{
char rev[2];
rev[0] = BOARD_ID2REV(board_id) - 1 + 'A';
rev[1] = '\0';
NOTICE("Board: MB%04x Var%u.%u Rev.%s-%02u\n",
BOARD_ID2NB(board_id),
BOARD_ID2VARCPN(board_id),
BOARD_ID2VARFG(board_id),
rev,
BOARD_ID2BOM(board_id));
}
void stm32_save_boot_info(boot_api_context_t *boot_context)
{
uint32_t auth_status;
assert(boot_context->boot_interface_instance <= (BOOT_INST_MASK >> BOOT_INST_SHIFT));
assert(boot_context->boot_interface_selected <= (BOOT_ITF_MASK >> BOOT_ITF_SHIFT));
assert(boot_context->boot_partition_used_toboot <= (BOOT_PART_MASK >> BOOT_PART_SHIFT));
switch (boot_context->auth_status) {
case BOOT_API_CTX_AUTH_NO:
auth_status = 0x0U;
break;
case BOOT_API_CTX_AUTH_SUCCESS:
auth_status = 0x2U;
break;
case BOOT_API_CTX_AUTH_FAILED:
default:
auth_status = 0x1U;
break;
}
clk_enable(TAMP_BKP_REG_CLK);
mmio_clrsetbits_32(stm32_get_bkpr_boot_mode_addr(),
BOOT_ITF_MASK | BOOT_INST_MASK | BOOT_PART_MASK | BOOT_AUTH_MASK,
(boot_context->boot_interface_instance << BOOT_INST_SHIFT) |
(boot_context->boot_interface_selected << BOOT_ITF_SHIFT) |
(boot_context->boot_partition_used_toboot << BOOT_PART_SHIFT) |
(auth_status << BOOT_AUTH_SHIFT));
clk_disable(TAMP_BKP_REG_CLK);
}
void stm32_get_boot_interface(uint32_t *interface, uint32_t *instance)
{
static uint32_t itf;
if (itf == 0U) {
clk_enable(TAMP_BKP_REG_CLK);
itf = mmio_read_32(stm32_get_bkpr_boot_mode_addr()) &
(BOOT_ITF_MASK | BOOT_INST_MASK);
clk_disable(TAMP_BKP_REG_CLK);
}
*interface = (itf & BOOT_ITF_MASK) >> BOOT_ITF_SHIFT;
*instance = (itf & BOOT_INST_MASK) >> BOOT_INST_SHIFT;
}