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stm32mp1: reset coprocessor status at cold boot

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Reset ResourceTableAddress and CoprocessorState at cold boot, preserve
these values at standby wakeup.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Fabien Dessenne 2019-10-30 14:38:30 +01:00 committed by Tom Rini
parent ee16c9a60b
commit 7bff971a14
1 changed files with 7 additions and 0 deletions
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7
arch/arm/mach-stm32mp/cpu.c
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@ -35,7 +35,9 @@
#define TAMP_CR1 (STM32_TAMP_BASE + 0x00)
#define PWR_CR1 (STM32_PWR_BASE + 0x00)
#define PWR_MCUCR (STM32_PWR_BASE + 0x14)
#define PWR_CR1_DBP BIT(8)
#define PWR_MCUCR_SBF BIT(6)
/* DBGMCU register */
#define DBGMCU_IDC (STM32_DBGMCU_BASE + 0x00)
@ -206,6 +208,11 @@ int arch_cpu_init(void)
security_init();
update_bootmode();
#endif
/* Reset Coprocessor state unless it wakes up from Standby power mode */
if (!(readl(PWR_MCUCR) & PWR_MCUCR_SBF)) {
writel(TAMP_COPRO_STATE_OFF, TAMP_COPRO_STATE);
writel(0, TAMP_COPRO_RSC_TBL_ADDRESS);
}
#endif
boot_mode = get_bootmode();