From: David Feng fenghua@phytium.com.cn
This patch fix the fdt_initrd function. It will get #address_cells property first, then write "linux,initrd-start" and "linux,initrd-end" property value to fdt according to address cell size. So, the 64bit initrd start address could be supported.
Signed-off-by: David Feng fenghua@phytium.com.cn --- common/fdt_support.c | 66 ++++++++++++++++++++++++++------------------------ 1 file changed, 34 insertions(+), 32 deletions(-)
diff --git a/common/fdt_support.c b/common/fdt_support.c index b034c98..9bc5821 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -21,6 +21,34 @@ */ DECLARE_GLOBAL_DATA_PTR;
+/* + * Get cells len in bytes + * if #NNNN-cells property is 2 then len is 8 + * otherwise len is 4 + */ +static int get_cells_len(void *blob, char *nr_cells_name) +{ + const fdt32_t *cell; + + cell = fdt_getprop(blob, 0, nr_cells_name, NULL); + if (cell && fdt32_to_cpu(*cell) == 2) + return 8; + + return 4; +} + +/* + * Write a 4 or 8 byte big endian cell + */ +static void write_cell(u8 *addr, u64 val, int size) +{ + int shift = (size - 1) * 8; + while (size-- > 0) { + *addr++ = (val >> shift) & 0xff; + shift -= 8; + } +} + /** * fdt_getprop_u32_default - Find a node and return it's property or a default * @@ -131,9 +159,9 @@ static int fdt_fixup_stdout(void *fdt, int chosenoff)
int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force) { - int nodeoffset; + int nodeoffset, addr_cell_len; int err, j, total; - fdt32_t tmp; + fdt64_t tmp; const char *path; uint64_t addr, size;
@@ -170,9 +198,11 @@ int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force) return err; }
+ addr_cell_len = get_cells_len(fdt, "#address-cells"); + path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL); if ((path == NULL) || force) { - tmp = cpu_to_fdt32(initrd_start); + write_cell((u8 *)&tmp, initrd_start, addr_cell_len); err = fdt_setprop(fdt, nodeoffset, "linux,initrd-start", &tmp, sizeof(tmp)); if (err < 0) { @@ -181,7 +211,7 @@ int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force) fdt_strerror(err)); return err; } - tmp = cpu_to_fdt32(initrd_end); + write_cell((u8 *)&tmp, initrd_end, addr_cell_len); err = fdt_setprop(fdt, nodeoffset, "linux,initrd-end", &tmp, sizeof(tmp)); if (err < 0) { @@ -343,34 +373,6 @@ void do_fixup_by_compat_u32(void *fdt, const char *compat, do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create); }
-/* - * Get cells len in bytes - * if #NNNN-cells property is 2 then len is 8 - * otherwise len is 4 - */ -static int get_cells_len(void *blob, char *nr_cells_name) -{ - const fdt32_t *cell; - - cell = fdt_getprop(blob, 0, nr_cells_name, NULL); - if (cell && fdt32_to_cpu(*cell) == 2) - return 8; - - return 4; -} - -/* - * Write a 4 or 8 byte big endian cell - */ -static void write_cell(u8 *addr, u64 val, int size) -{ - int shift = (size - 1) * 8; - while (size-- > 0) { - *addr++ = (val >> shift) & 0xff; - shift -= 8; - } -} - #ifdef CONFIG_NR_DRAM_BANKS #define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS #else