diff options
| author | Marek Vasut <marek.vasut@mailbox.org> | 2025-06-30 02:10:29 +0200 |
|---|---|---|
| committer | Patrice Chotard <patrice.chotard@foss.st.com> | 2025-07-29 17:02:31 +0200 |
| commit | a36e87127a39734bff1896a4fa5bdab546bce6f4 (patch) | |
| tree | 84a5ec2fbc796d2d341e103d1b4c89ee18fb8b11 | |
| parent | b87ebbe87c05cf5759c5ca93f3749089fdcc4a20 (diff) | |
ARM: stm32: Limit early cache enablement in SPL to STM32MP15xx
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 <patrice.chotard@foss.st.com>
Signed-off-by: Marek Vasut <marek.vasut@mailbox.org>
| -rw-r--r-- | arch/arm/mach-stm32mp/stm32mp1/cpu.c | 9 | ||||
| -rw-r--r-- | 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) |