Heavily inspired by Apple board code. Use the LMB allocator to configure load addresses at runtime, and implement a lookup table for selecting a devicetree.
As some Qualcomm RBx boards have different RAM capacities and base addresses, it isn't possible to hardcode these regions.
Signed-off-by: Caleb Connolly caleb.connolly@linaro.org --- arch/arm/Kconfig | 1 + arch/arm/mach-snapdragon/board.c | 34 ++++++++++++++++++++++++ board/qualcomm/dragonboard410c/dragonboard410c.c | 2 +- 3 files changed, 36 insertions(+), 1 deletion(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 03ea75cefc0d..c7a07c648fc0 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1085,6 +1085,7 @@ config ARCH_SNAPDRAGON select OF_SEPARATE select SMEM select SPMI + select BOARD_LATE_INIT select OF_BOARD select SAVE_PREV_BL_FDT_ADDR select LINUX_KERNEL_IMAGE_HEADER diff --git a/arch/arm/mach-snapdragon/board.c b/arch/arm/mach-snapdragon/board.c index 3018cc462b8f..3f51c4ab42d6 100644 --- a/arch/arm/mach-snapdragon/board.c +++ b/arch/arm/mach-snapdragon/board.c @@ -23,6 +23,7 @@ #include <linux/bug.h> #include <linux/psci.h> #include <linux/sizes.h> +#include <lmb.h> #include <malloc.h> #include <usb.h>
@@ -160,6 +161,39 @@ int board_init(void) return 0; }
+void __weak qcom_late_init(void) +{ +} + +#define KERNEL_COMP_SIZE SZ_64M + +#define addr_alloc(lmb, size) lmb_alloc(lmb, size, SZ_2M) + +/* Stolen from arch/arm/mach-apple/board.c */ +int board_late_init(void) +{ + struct lmb lmb; + u32 status = 0; + + lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob); + + /* We need to be fairly conservative here as we support boards with just 1G of TOTAL RAM */ + status |= env_set_hex("kernel_addr_r", addr_alloc(&lmb, SZ_128M)); + status |= env_set_hex("ramdisk_addr_r", addr_alloc(&lmb, SZ_128M)); + status |= env_set_hex("kernel_comp_addr_r", addr_alloc(&lmb, KERNEL_COMP_SIZE)); + status |= env_set_hex("kernel_comp_size", KERNEL_COMP_SIZE); + status |= env_set_hex("scriptaddr", addr_alloc(&lmb, SZ_4M)); + status |= env_set_hex("pxefile_addr_r", addr_alloc(&lmb, SZ_4M)); + status |= env_set_hex("fdt_addr_r", addr_alloc(&lmb, SZ_2M)); + + if (status) + log_warning("%s: Failed to set run time variables\n", __func__); + + qcom_late_init(); + + return 0; +} + static void build_mem_map(void) { int i; diff --git a/board/qualcomm/dragonboard410c/dragonboard410c.c b/board/qualcomm/dragonboard410c/dragonboard410c.c index 0136cc2237de..fbbfc0e65e24 100644 --- a/board/qualcomm/dragonboard410c/dragonboard410c.c +++ b/board/qualcomm/dragonboard410c/dragonboard410c.c @@ -88,7 +88,7 @@ int misc_init_r(void) return 0; }
-int board_late_init(void) +int qcom_late_init(void) { char serial[16];