diff options
| -rw-r--r-- | common/fdt_support.c | 44 | ||||
| -rw-r--r-- | include/fdt_support.h | 2 |
2 files changed, 46 insertions, 0 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c index 89164a1..40ff00a 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -692,3 +692,47 @@ int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { return 0; } #endif + +#ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE +/* + * This function can be used to update the size in the "reg" property + * of the NOR FLASH device nodes. This is necessary for boards with + * non-fixed NOR FLASH sizes. + */ +int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size) +{ + char compat[][16] = { "cfi-flash", "jedec-flash" }; + int off; + int len; + struct fdt_property *prop; + u32 *reg; + int i; + + for (i = 0; i < 2; i++) { + off = fdt_node_offset_by_compatible(blob, -1, compat[i]); + while (off != -FDT_ERR_NOTFOUND) { + /* + * Found one compatible node, now check if this one + * has the correct CS + */ + prop = fdt_get_property_w(blob, off, "reg", &len); + if (prop) { + reg = (u32 *)&prop->data[0]; + if (reg[0] == cs) { + reg[2] = size; + fdt_setprop(blob, off, "reg", reg, + 3 * sizeof(u32)); + + return 0; + } + } + + /* Move to next compatible node */ + off = fdt_node_offset_by_compatible(blob, off, + compat[i]); + } + } + + return -1; +} +#endif diff --git a/include/fdt_support.h b/include/fdt_support.h index 16734c5..0a9dd0d 100644 --- a/include/fdt_support.h +++ b/include/fdt_support.h @@ -79,5 +79,7 @@ void ft_pci_setup(void *blob, bd_t *bd); void set_working_fdt_addr(void *addr); int fdt_resize(void *blob); +int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size); + #endif /* ifdef CONFIG_OF_LIBFDT */ #endif /* ifndef __FDT_SUPPORT_H */ |