diff options
Diffstat (limited to 'lib/fdtdec.c')
| -rw-r--r-- | lib/fdtdec.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 4e619c4..81f47ef 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -1174,6 +1174,62 @@ int fdtdec_decode_display_timing(const void *blob, int parent, int index, return ret; } +int fdtdec_setup_memory_size(void) +{ + int ret, mem; + struct fdt_resource res; + + mem = fdt_path_offset(gd->fdt_blob, "/memory"); + if (mem < 0) { + debug("%s: Missing /memory node\n", __func__); + return -EINVAL; + } + + ret = fdt_get_resource(gd->fdt_blob, mem, "reg", 0, &res); + if (ret != 0) { + debug("%s: Unable to decode first memory bank\n", __func__); + return -EINVAL; + } + + gd->ram_size = (phys_size_t)(res.end - res.start + 1); + debug("%s: Initial DRAM size %llx\n", __func__, (u64)gd->ram_size); + + return 0; +} + +#if defined(CONFIG_NR_DRAM_BANKS) +int fdtdec_setup_memory_banksize(void) +{ + int bank, ret, mem; + struct fdt_resource res; + + mem = fdt_path_offset(gd->fdt_blob, "/memory"); + if (mem < 0) { + debug("%s: Missing /memory node\n", __func__); + return -EINVAL; + } + + for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) { + ret = fdt_get_resource(gd->fdt_blob, mem, "reg", bank, &res); + if (ret == -FDT_ERR_NOTFOUND) + break; + if (ret != 0) + return -EINVAL; + + gd->bd->bi_dram[bank].start = (phys_addr_t)res.start; + gd->bd->bi_dram[bank].size = + (phys_size_t)(res.end - res.start + 1); + + debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n", + __func__, bank, + (unsigned long long)gd->bd->bi_dram[bank].start, + (unsigned long long)gd->bd->bi_dram[bank].size); + } + + return 0; +} +#endif + int fdtdec_setup(void) { #if CONFIG_IS_ENABLED(OF_CONTROL) |