diff options
Diffstat (limited to 'src/cpu/samsung')
| -rw-r--r-- | src/cpu/samsung/exynos5250/Kconfig | 9 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/Kconfig | 9 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/bootblock.c | 15 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/wakeup.c | 3 |
4 files changed, 36 insertions, 0 deletions
diff --git a/src/cpu/samsung/exynos5250/Kconfig b/src/cpu/samsung/exynos5250/Kconfig index e0e179dd64..f937e7b21e 100644 --- a/src/cpu/samsung/exynos5250/Kconfig +++ b/src/cpu/samsung/exynos5250/Kconfig @@ -85,6 +85,15 @@ config CBFS_CACHE_SIZE hex "size of CBFS cache data" default 0x00018000 +# TTB needs to be aligned to 16KB. +config TTB_BUFFER + hex "memory address of the TTB buffer" + default 0x02058000 + +config TTB_SIZE + hex "size of the TTB buffer" + default 0x4000 + config SYS_SDRAM_BASE hex default 0x40000000 diff --git a/src/cpu/samsung/exynos5420/Kconfig b/src/cpu/samsung/exynos5420/Kconfig index 66679a000b..fe475ab4b3 100644 --- a/src/cpu/samsung/exynos5420/Kconfig +++ b/src/cpu/samsung/exynos5420/Kconfig @@ -46,6 +46,7 @@ config CBFS_ROM_OFFSET # 0x0202_4400: variable length bootblock checksum header. # 0x0202_4410: bootblock, assume up to 32KB in size # 0x0203_0000: romstage, assume up to 128KB in size. +# 0x0205_8000: TTB buffer. # 0x0205_c000: cache for CBFS data. # 0x0206_f000: stack bottom # 0x0207_3000: stack pointer @@ -110,6 +111,14 @@ config CBFS_CACHE_SIZE hex "size of CBFS cache data" default 0x00013000 +config TTB_BUFFER + hex "memory address of the TTB buffer" + default 0x02058000 + +config TTB_SIZE + hex "size of the TTB buffer" + default 0x4000 + config SYS_SDRAM_BASE hex default 0x20000000 diff --git a/src/cpu/samsung/exynos5420/bootblock.c b/src/cpu/samsung/exynos5420/bootblock.c index 5cc9ef6af2..3df51a7421 100644 --- a/src/cpu/samsung/exynos5420/bootblock.c +++ b/src/cpu/samsung/exynos5420/bootblock.c @@ -17,10 +17,17 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <arch/cache.h> + #include "clk.h" #include "wakeup.h" #include "cpu.h" +/* convenient shorthand (in MB) */ +#define SRAM_START (0x02020000 >> 20) +#define SRAM_SIZE 1 +#define SRAM_END (SRAM_START + SRAM_SIZE) /* plus one... */ + void bootblock_cpu_init(void); void bootblock_cpu_init(void) { @@ -51,6 +58,14 @@ void bootblock_cpu_init(void) /* Never returns. */ } + /* set up dcache and MMU */ + mmu_init(); + mmu_config_range(0, SRAM_START, DCACHE_OFF); + mmu_config_range(SRAM_START, SRAM_SIZE, DCACHE_WRITEBACK); + mmu_config_range(SRAM_END, 4096 - SRAM_END, DCACHE_OFF); + dcache_invalidate_all(); + dcache_mmu_enable(); + /* For most ARM systems, we have to initialize firmware media source * (ex, SPI, SD/MMC, or eMMC) now; but for Exynos platform, that is * already handled by iROM so there's no need to setup again. diff --git a/src/cpu/samsung/exynos5420/wakeup.c b/src/cpu/samsung/exynos5420/wakeup.c index 5764c83bd6..af7ef73f89 100644 --- a/src/cpu/samsung/exynos5420/wakeup.c +++ b/src/cpu/samsung/exynos5420/wakeup.c @@ -17,6 +17,7 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <arch/cache.h> #include <console/console.h> #include "power.h" #include "wakeup.h" @@ -27,6 +28,8 @@ void wakeup(void) power_reset(); power_init(); /* Ensure ps_hold_setup() for early wakeup. */ + dcache_mmu_disable(); + icache_invalidate_all(); power_exit_wakeup(); /* Should never return. */ die("Failed to wake up.\n"); |