From 76e350b7a3c568c8d27cf72f98036ec3ddb64f31 Mon Sep 17 00:00:00 2001 From: Tom Warren Date: Wed, 30 May 2012 14:06:09 -0700 Subject: [PATCH] arm: Tegra: Use ODMDATA from BCT in IRAM Walk the BIT and BCT to find the ODMDATA word in the CustomerData field and put it into Scratch20 reg for use by kernel, etc. Built all Tegra builds OK; Booted on Seaboard and saw ODMDATA in PMC scratch20 was the same as the value in my burn-u-boot.sh file (0x300D8011). NOTE: All flash utilities will have to specify the odmdata (nvflash --odmdata n) on the command line or via a cfg file, or built in to their BCT. Signed-off-by: Tom Warren Acked-by: Stephen Warren --- arch/arm/cpu/armv7/tegra2/ap20.c | 22 +++++++++++++++++++++- arch/arm/include/asm/arch-tegra2/tegra2.h | 4 ++++ include/configs/harmony.h | 1 - include/configs/medcom.h | 1 - include/configs/paz00.h | 1 - include/configs/plutux.h | 1 - include/configs/seaboard.h | 1 - include/configs/trimslice.h | 1 - include/configs/ventana.h | 1 - include/configs/whistler.h | 1 - 10 files changed, 25 insertions(+), 9 deletions(-) diff --git a/arch/arm/cpu/armv7/tegra2/ap20.c b/arch/arm/cpu/armv7/tegra2/ap20.c index 24e582d95c..1aad3879ee 100644 --- a/arch/arm/cpu/armv7/tegra2/ap20.c +++ b/arch/arm/cpu/armv7/tegra2/ap20.c @@ -314,9 +314,28 @@ void enable_scu(void) writel(reg, &scu->scu_ctrl); } +static u32 get_odmdata(void) +{ + /* + * ODMDATA is stored in the BCT in IRAM by the BootROM. + * The BCT start and size are stored in the BIT in IRAM. + * Read the data @ bct_start + (bct_size - 12). This works + * on T20 and T30 BCTs, which are locked down. If this changes + * in new chips (T114, etc.), we can revisit this algorithm. + */ + + u32 bct_start, odmdata; + + bct_start = readl(AP20_BASE_PA_SRAM + NVBOOTINFOTABLE_BCTPTR); + odmdata = readl(bct_start + BCT_ODMDATA_OFFSET); + + return odmdata; +} + void init_pmc_scratch(void) { struct pmc_ctlr *const pmc = (struct pmc_ctlr *)TEGRA2_PMC_BASE; + u32 odmdata; int i; /* SCRATCH0 is initialized by the boot ROM and shouldn't be cleared */ @@ -324,7 +343,8 @@ void init_pmc_scratch(void) writel(0, &pmc->pmc_scratch1+i); /* ODMDATA is for kernel use to determine RAM size, LP config, etc. */ - writel(CONFIG_SYS_BOARD_ODMDATA, &pmc->pmc_scratch20); + odmdata = get_odmdata(); + writel(odmdata, &pmc->pmc_scratch20); #ifdef CONFIG_TEGRA2_LP0 /* save Sdram params to PMC 2, 4, and 24 for WB0 */ diff --git a/arch/arm/include/asm/arch-tegra2/tegra2.h b/arch/arm/include/asm/arch-tegra2/tegra2.h index d4ada10ea8..3c8d8a84b5 100644 --- a/arch/arm/include/asm/arch-tegra2/tegra2.h +++ b/arch/arm/include/asm/arch-tegra2/tegra2.h @@ -60,6 +60,10 @@ struct timerus { /* Address at which WB code runs, it must not overlap Bootrom's IRAM usage */ #define AP20_WB_RUN_ADDRESS 0x40020000 +#define NVBOOTINFOTABLE_BCTSIZE 0x38 /* BCT size in BIT in IRAM */ +#define NVBOOTINFOTABLE_BCTPTR 0x3C /* BCT pointer in BIT in IRAM */ +#define BCT_ODMDATA_OFFSET 4068 /* 12 bytes from end of BCT */ + /* These are the available SKUs (product types) for Tegra */ enum { SKU_ID_T20 = 0x8, diff --git a/include/configs/harmony.h b/include/configs/harmony.h index d13ead9909..df5265a5a0 100644 --- a/include/configs/harmony.h +++ b/include/configs/harmony.h @@ -48,7 +48,6 @@ #endif #define CONFIG_MACH_TYPE MACH_TYPE_HARMONY -#define CONFIG_SYS_BOARD_ODMDATA 0x300d8011 /* lp1, 1GB */ #define CONFIG_BOARD_EARLY_INIT_F diff --git a/include/configs/medcom.h b/include/configs/medcom.h index d3d10550af..bdea7c9c53 100644 --- a/include/configs/medcom.h +++ b/include/configs/medcom.h @@ -31,7 +31,6 @@ /* High-level configuration options */ #define V_PROMPT "Tegra2 (Medcom) # " #define CONFIG_TEGRA2_BOARD_STRING "Avionic Design Medcom" -#define CONFIG_SYS_BOARD_ODMDATA 0x2b0d8011 /* Board-specific serial config */ #define CONFIG_SERIAL_MULTI diff --git a/include/configs/paz00.h b/include/configs/paz00.h index 29c368a99e..0dd1e83a50 100644 --- a/include/configs/paz00.h +++ b/include/configs/paz00.h @@ -35,7 +35,6 @@ #define CONFIG_SYS_NS16550_COM1 NV_PA_APB_UARTA_BASE #define CONFIG_MACH_TYPE MACH_TYPE_PAZ00 -#define CONFIG_SYS_BOARD_ODMDATA 0x800c0085 /* lp1, 512MB */ #define CONFIG_BOARD_EARLY_INIT_F diff --git a/include/configs/plutux.h b/include/configs/plutux.h index e73be0bf92..6397eb104a 100644 --- a/include/configs/plutux.h +++ b/include/configs/plutux.h @@ -31,7 +31,6 @@ /* High-level configuration options */ #define V_PROMPT "Tegra2 (Plutux) # " #define CONFIG_TEGRA2_BOARD_STRING "Avionic Design Plutux" -#define CONFIG_SYS_BOARD_ODMDATA 0x2b2d8011 /* Board-specific serial config */ #define CONFIG_SERIAL_MULTI diff --git a/include/configs/seaboard.h b/include/configs/seaboard.h index 537ab0e71c..f661583fed 100644 --- a/include/configs/seaboard.h +++ b/include/configs/seaboard.h @@ -53,7 +53,6 @@ #define CONFIG_UART_DISABLE_GPIO GPIO_PI3 #define CONFIG_MACH_TYPE MACH_TYPE_SEABOARD -#define CONFIG_SYS_BOARD_ODMDATA 0x300d8011 /* lp1, 1GB */ #define CONFIG_BOARD_EARLY_INIT_F diff --git a/include/configs/trimslice.h b/include/configs/trimslice.h index 915b07ae23..91de348d59 100644 --- a/include/configs/trimslice.h +++ b/include/configs/trimslice.h @@ -43,7 +43,6 @@ #define CONFIG_SYS_NS16550_COM1 NV_PA_APB_UARTA_BASE #define CONFIG_MACH_TYPE MACH_TYPE_TRIMSLICE -#define CONFIG_SYS_BOARD_ODMDATA 0x300c0011 /* lp?, 1GB, UARTA */ #define CONFIG_BOARD_EARLY_INIT_F diff --git a/include/configs/ventana.h b/include/configs/ventana.h index 77a0a14152..5e4d53861c 100644 --- a/include/configs/ventana.h +++ b/include/configs/ventana.h @@ -42,7 +42,6 @@ #define CONFIG_SYS_NS16550_COM1 NV_PA_APB_UARTD_BASE #define CONFIG_MACH_TYPE MACH_TYPE_VENTANA -#define CONFIG_SYS_BOARD_ODMDATA 0x300d8011 /* lp1, 1GB */ #define CONFIG_BOARD_EARLY_INIT_F diff --git a/include/configs/whistler.h b/include/configs/whistler.h index 9dafe5cadc..f2952d5f45 100644 --- a/include/configs/whistler.h +++ b/include/configs/whistler.h @@ -43,7 +43,6 @@ #define CONFIG_SYS_NS16550_COM1 NV_PA_APB_UARTA_BASE #define CONFIG_MACH_TYPE MACH_TYPE_WHISTLER -#define CONFIG_SYS_BOARD_ODMDATA 0x2B080105 /* lp?, 512MB, UARTA */ #define CONFIG_BOARD_EARLY_INIT_F -- 2.25.1