diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2020-05-18 07:57:22 +0200 |
|---|---|---|
| committer | Lokesh Vutla <lokeshvutla@ti.com> | 2020-05-19 14:41:13 +0530 |
| commit | c02712a7484918648e5dd09c092035c7eeb7794a (patch) | |
| tree | c039b0a9f623eefc534fb3dbffceacee041d61a7 /arch/arm/mach-k3 | |
| parent | 6cfd09d4ed43ee401cc16f1dffabe7911b603380 (diff) | |
arm: mach-k3: Enable dcache in SPL
Add support for enabling dcache already in SPL. It accelerates the boot
and resolves the risk to run into unaligned 64-bit accesses.
Based on original patch by Lokesh Vulta.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Acked-by: Lokesh Vutla <lokeshvutla@ti.com>
Diffstat (limited to 'arch/arm/mach-k3')
| -rw-r--r-- | arch/arm/mach-k3/am6_init.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-k3/common.c | 35 | ||||
| -rw-r--r-- | arch/arm/mach-k3/common.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-k3/j721e_init.c | 1 |
4 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-k3/am6_init.c b/arch/arm/mach-k3/am6_init.c index b692806352..586f5c022e 100644 --- a/arch/arm/mach-k3/am6_init.c +++ b/arch/arm/mach-k3/am6_init.c @@ -197,6 +197,7 @@ void board_init_f(ulong dummy) if (ret) panic("DRAM init failed: %d\n", ret); #endif + spl_enable_dcache(); } u32 spl_mmc_boot_mode(const u32 boot_device) diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c index 80dfa5f0fd..a94e054491 100644 --- a/arch/arm/mach-k3/common.c +++ b/arch/arm/mach-k3/common.c @@ -406,3 +406,38 @@ void remove_fwl_configs(struct fwl_data *fwl_data, size_t fwl_data_size) } } } + +void spl_enable_dcache(void) +{ +#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) + phys_addr_t ram_top = CONFIG_SYS_SDRAM_BASE; + + dram_init_banksize(); + + /* reserve TLB table */ + gd->arch.tlb_size = PGTABLE_SIZE; + + ram_top += get_effective_memsize(); + /* keep ram_top in the 32-bit address space */ + if (ram_top >= 0x100000000) + ram_top = (phys_addr_t) 0x100000000; + + gd->arch.tlb_addr = ram_top - gd->arch.tlb_size; + debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr, + gd->arch.tlb_addr + gd->arch.tlb_size); + + dcache_enable(); +#endif +} + +#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) +void spl_board_prepare_for_boot(void) +{ + dcache_disable(); +} + +void spl_board_prepare_for_boot_linux(void) +{ + dcache_disable(); +} +#endif diff --git a/arch/arm/mach-k3/common.h b/arch/arm/mach-k3/common.h index 57682e1973..94cdcb56ad 100644 --- a/arch/arm/mach-k3/common.h +++ b/arch/arm/mach-k3/common.h @@ -27,3 +27,4 @@ void remove_fwl_configs(struct fwl_data *fwl_data, size_t fwl_data_size); void start_non_linux_remote_cores(void); int load_firmware(char *name_fw, char *name_loadaddr, u32 *loadaddr); void k3_sysfw_print_ver(void); +void spl_enable_dcache(void); diff --git a/arch/arm/mach-k3/j721e_init.c b/arch/arm/mach-k3/j721e_init.c index 18a3c1c052..031279bc5b 100644 --- a/arch/arm/mach-k3/j721e_init.c +++ b/arch/arm/mach-k3/j721e_init.c @@ -221,6 +221,7 @@ void board_init_f(ulong dummy) if (ret) panic("DRAM init failed: %d\n", ret); #endif + spl_enable_dcache(); } u32 spl_mmc_boot_mode(const u32 boot_device) |