The STM32MP13xx SRAM size is half that the SRAM size on STM32MP15xx, disable early dcache start on STM32MP13xx as the TLB itself takes about a quarter of the SPL size. The dcache will be enabled later, once DRAM is available and TLB can be placed in DRAM.
Reviewed-by: Patrice Chotard <[email protected]> Signed-off-by: Marek Vasut <[email protected]> --- Cc: Cheick Traore <[email protected]> Cc: Fabrice Gasnier <[email protected]> Cc: Gatien Chevallier <[email protected]> Cc: Lionel Debieve <[email protected]> Cc: Pascal Zimmermann <[email protected]> Cc: Patrice Chotard <[email protected]> Cc: Patrick Delaunay <[email protected]> Cc: Simon Glass <[email protected]> Cc: Sughosh Ganu <[email protected]> Cc: Tom Rini <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] --- V2: Add RB from Patrice --- arch/arm/mach-stm32mp/stm32mp1/cpu.c | 9 ++++++--- arch/arm/mach-stm32mp/stm32mp1/spl.c | 3 ++- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-stm32mp/stm32mp1/cpu.c b/arch/arm/mach-stm32mp/stm32mp1/cpu.c index 8c09d91de05..e0c6f8ba937 100644 --- a/arch/arm/mach-stm32mp/stm32mp1/cpu.c +++ b/arch/arm/mach-stm32mp/stm32mp1/cpu.c @@ -28,7 +28,9 @@ * early TLB into the .data section so that it not get cleared * with 16kB allignment (see TTBR0_BASE_ADDR_MASK) */ +#if (!IS_ENABLED(CONFIG_XPL_BUILD) || !IS_ENABLED(CONFIG_STM32MP13X)) u8 early_tlb[PGTABLE_SIZE] __section(".data") __aligned(0x4000); +#endif u32 get_bootmode(void) { @@ -95,18 +97,19 @@ void dram_bank_mmu_setup(int bank) */ static void early_enable_caches(void) { +#if (!IS_ENABLED(CONFIG_XPL_BUILD) || !IS_ENABLED(CONFIG_STM32MP13X)) /* I-cache is already enabled in start.S: cpu_init_cp15 */ - if (CONFIG_IS_ENABLED(SYS_DCACHE_OFF)) return; #if !(CONFIG_IS_ENABLED(SYS_ICACHE_OFF) && CONFIG_IS_ENABLED(SYS_DCACHE_OFF)) - gd->arch.tlb_size = PGTABLE_SIZE; - gd->arch.tlb_addr = (unsigned long)&early_tlb; + gd->arch.tlb_size = PGTABLE_SIZE; + gd->arch.tlb_addr = (unsigned long)&early_tlb; #endif /* enable MMU (default configuration) */ dcache_enable(); +#endif } /* diff --git a/arch/arm/mach-stm32mp/stm32mp1/spl.c b/arch/arm/mach-stm32mp/stm32mp1/spl.c index 9c4fafbf478..e63bdaaf42f 100644 --- a/arch/arm/mach-stm32mp/stm32mp1/spl.c +++ b/arch/arm/mach-stm32mp/stm32mp1/spl.c @@ -220,10 +220,11 @@ void board_init_f(ulong dummy) * activate cache on DDR only when DDR is fully initialized * to avoid speculative access and issue in get_ram_size() */ - if (!CONFIG_IS_ENABLED(SYS_DCACHE_OFF)) + if (!CONFIG_IS_ENABLED(SYS_DCACHE_OFF) && !IS_ENABLED(CONFIG_STM32MP13X)) { mmu_set_region_dcache_behaviour(STM32_DDR_BASE, CONFIG_DDR_CACHEABLE_SIZE, DCACHE_DEFAULT_OPTION); + } } void spl_board_prepare_for_boot(void) -- 2.47.2
