Retrieve the EFI info header passed in via x0 and use it to populate the memory banks when booting with CONFIG_EFI_STUB.
Signed-off-by: Caleb Connolly caleb.connolly@linaro.org --- arch/arm/mach-snapdragon/board.c | 15 +++++++++++++++ arch/arm/mach-snapdragon/dram.c | 15 ++++++++++++++- arch/arm/mach-snapdragon/qcom-priv.h | 2 ++ 3 files changed, 31 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-snapdragon/board.c b/arch/arm/mach-snapdragon/board.c index dbac8aa2709a..f92b26c88d46 100644 --- a/arch/arm/mach-snapdragon/board.c +++ b/arch/arm/mach-snapdragon/board.c @@ -41,8 +41,10 @@ DECLARE_GLOBAL_DATA_PTR; static struct mm_region rbx_mem_map[CONFIG_NR_DRAM_BANKS + 2] = { { 0 } };
struct mm_region *mem_map = rbx_mem_map;
+struct efi_info_hdr *efi_info __section(".data") = NULL; + static void show_psci_version(void) { struct arm_smccc_res res;
@@ -59,15 +61,28 @@ static void show_psci_version(void) */ void *board_fdt_blob_setup(int *err) { struct fdt_header *fdt; + struct efi_info_hdr *info = NULL; bool internal_valid, external_valid;
*err = 0; fdt = (struct fdt_header *)get_prev_bl_fdt_addr(); external_valid = fdt && !fdt_check_header(fdt); internal_valid = !fdt_check_header(gd->fdt_blob);
+ /* + * If EFI_STUB is enabled, we got handed a pointer and it's NOT + * a valid FDT, then it might be the efi_info table! + */ + if (CONFIG_IS_ENABLED(EFI_STUB) && fdt && !external_valid) + info = (struct efi_info_hdr *)fdt; + + if (info->version == 1) { + debug("Got EFI info header!\n"); + efi_info = info; + } + /* * There is no point returning an error here, U-Boot can't do anything useful in this situation. * Bail out while we can still print a useful error message. */ diff --git a/arch/arm/mach-snapdragon/dram.c b/arch/arm/mach-snapdragon/dram.c index ef226e000858..0493653e432b 100644 --- a/arch/arm/mach-snapdragon/dram.c +++ b/arch/arm/mach-snapdragon/dram.c @@ -7,12 +7,15 @@ #define pr_fmt(fmt) "QCOM-DRAM: " fmt
#include <asm-generic/unaligned.h> #include <dm.h> +#include <efi_stub.h> #include <log.h> #include <sort.h> #include <soc/qcom/smem.h>
+#include "qcom-priv.h" + #define SMEM_USABLE_RAM_PARTITION_TABLE 402 #define RAM_PART_NAME_LENGTH 16 #define RAM_NUM_PART_ENTRIES 32 #define CATEGORY_SDRAM 0x0E @@ -89,9 +92,19 @@ static void qcom_configure_bi_dram(void) }
int dram_init_banksize(void) { - qcom_configure_bi_dram(); +#ifdef CONFIG_EFI_STUB + gd->arch.table = (phys_addr_t)efi_info; + /* We actually parsed a memory map from SMEM (and used it to + * set ram_base/ram_top), but it's better to respect the table + * from the EFI bootloader. + */ + if (efi_info) + dram_init_banksize_from_efi(); + else +#endif + qcom_configure_bi_dram();
return 0; }
diff --git a/arch/arm/mach-snapdragon/qcom-priv.h b/arch/arm/mach-snapdragon/qcom-priv.h index 690557463642..58b8cb497482 100644 --- a/arch/arm/mach-snapdragon/qcom-priv.h +++ b/arch/arm/mach-snapdragon/qcom-priv.h @@ -4,8 +4,10 @@ #define __QCOM_PRIV_H__
#include <stdbool.h>
+extern struct efi_info_hdr *efi_info; + #if IS_ENABLED(CONFIG_EFI_HAVE_CAPSULE_SUPPORT) void qcom_configure_capsule_updates(void); #else void qcom_configure_capsule_updates(void) {}