diff options
Diffstat (limited to 'board/renesas/rcar-common/common.c')
| -rw-r--r-- | board/renesas/rcar-common/common.c | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/board/renesas/rcar-common/common.c b/board/renesas/rcar-common/common.c index 0352d341e7..daa1beb14f 100644 --- a/board/renesas/rcar-common/common.c +++ b/board/renesas/rcar-common/common.c @@ -9,6 +9,7 @@ #include <common.h> #include <dm.h> +#include <fdt_support.h> #include <init.h> #include <asm/global_data.h> #include <dm/uclass-internal.h> @@ -19,9 +20,11 @@ DECLARE_GLOBAL_DATA_PTR; -/* If the firmware passed a device tree use it for U-Boot DRAM setup. */ +/* If the firmware passed a device tree use it for e.g. U-Boot DRAM setup. */ extern u64 rcar_atf_boot_args[]; +#define FDT_RPC_PATH "/soc/spi@ee200000" + int fdtdec_board_setup(const void *fdt_blob) { void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]); @@ -81,7 +84,7 @@ static int is_mem_overlap(void *blob, int first_mem_node, int curr_mem_node) return 0; } -int ft_board_setup(void *blob, struct bd_info *bd) +static void scrub_duplicate_memory(void *blob) { /* * Scrub duplicate /memory@* node entries here. Some R-Car DTs might @@ -119,6 +122,45 @@ int ft_board_setup(void *blob, struct bd_info *bd) first_mem_node = 0; mem = 0; } +} + +static void update_rpc_status(void *blob) +{ + void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]); + int offset, enabled; + + /* + * Check if the DT fragment received from TF-A had its RPC-IF device node + * enabled. + */ + if (fdt_magic(atf_fdt_blob) != FDT_MAGIC) + return; + + offset = fdt_path_offset(atf_fdt_blob, FDT_RPC_PATH); + if (offset < 0) + return; + + enabled = fdtdec_get_is_enabled(atf_fdt_blob, offset); + if (!enabled) + return; + + /* + * Find the RPC-IF device node, and enable it if it has a flash subnode. + */ + offset = fdt_path_offset(blob, FDT_RPC_PATH); + if (offset < 0) + return; + + if (fdt_subnode_offset(blob, offset, "flash") < 0) + return; + + fdt_status_okay(blob, offset); +} + +int ft_board_setup(void *blob, struct bd_info *bd) +{ + scrub_duplicate_memory(blob); + update_rpc_status(blob); return 0; } |