diff options
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/tegra-common/board.c | 64 |
1 files changed, 13 insertions, 51 deletions
diff --git a/arch/arm/cpu/tegra-common/board.c b/arch/arm/cpu/tegra-common/board.c index 433da09..b6a84a5 100644 --- a/arch/arm/cpu/tegra-common/board.c +++ b/arch/arm/cpu/tegra-common/board.c @@ -9,6 +9,7 @@ #include <asm/io.h> #include <asm/arch/clock.h> #include <asm/arch/funcmux.h> +#include <asm/arch/mc.h> #include <asm/arch/tegra.h> #include <asm/arch-tegra/board.h> #include <asm/arch-tegra/pmc.h> @@ -27,55 +28,6 @@ enum { UART_COUNT = 5, }; -#if defined(CONFIG_TEGRA20) || defined(CONFIG_TEGRA30) || \ - defined(CONFIG_TEGRA114) -/* - * Boot ROM initializes the odmdata in APBDEV_PMC_SCRATCH20_0, - * so we are using this value to identify memory size. - */ -unsigned int query_sdram_size(void) -{ - struct pmc_ctlr *const pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE; - u32 reg; - - reg = readl(&pmc->pmc_scratch20); - debug("pmc->pmc_scratch20 (ODMData) = 0x%08x\n", reg); - -#if defined(CONFIG_TEGRA20) - /* bits 30:28 in OdmData are used for RAM size on T20 */ - reg &= 0x70000000; - - switch ((reg) >> 28) { - case 1: - return 0x10000000; /* 256 MB */ - case 0: - case 2: - default: - return 0x20000000; /* 512 MB */ - case 3: - return 0x40000000; /* 1GB */ - } -#else /* Tegra30/Tegra114 */ - /* bits 31:28 in OdmData are used for RAM size on T30 */ - switch ((reg) >> 28) { - case 0: - case 1: - default: - return 0x10000000; /* 256 MB */ - case 2: - return 0x20000000; /* 512 MB */ - case 3: - return 0x30000000; /* 768 MB */ - case 4: - return 0x40000000; /* 1GB */ - case 8: - return 0x7ff00000; /* 2GB - 1MB */ - } -#endif -} -#else -#include <asm/arch/mc.h> - /* Read the RAM size directly from the memory controller */ unsigned int query_sdram_size(void) { @@ -83,12 +35,22 @@ unsigned int query_sdram_size(void) u32 size_mb; size_mb = readl(&mc->mc_emem_cfg); +#if defined(CONFIG_TEGRA20) + debug("mc->mc_emem_cfg (MEM_SIZE_KB) = 0x%08x\n", size_mb); + size_mb = get_ram_size((void *)PHYS_SDRAM_1, size_mb * 1024); +#else debug("mc->mc_emem_cfg (MEM_SIZE_MB) = 0x%08x\n", size_mb); + size_mb = get_ram_size((void *)PHYS_SDRAM_1, size_mb * 1024 * 1024); +#endif - return size_mb * 1024 * 1024; -} +#if defined(CONFIG_TEGRA30) || defined(CONFIG_TEGRA114) + /* External memory limited to 2047 MB due to IROM/HI-VEC */ + if (size_mb == SZ_2G) size_mb -= SZ_1M; #endif + return size_mb; +} + int dram_init(void) { /* We do not initialise DRAM here. We just query the size */ |