mirrors/u-boot
0
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2024-11-25 21:24:21 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add common memory fixup function

Browse Source 
Add the function fdt_fixup_memory() to fixup the /memory node of the fdt

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala 2007-11-26 14:57:45 -06:00 committed by Gerald Van Baren
parent 9c9109e7fc
commit 3c9272813f
2 changed files with 79 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

78
common/fdt_support.c
View File

@ -438,6 +438,84 @@ void do_fixup_by_compat_u32(void *fdt, const char *compat,
do_fixup_by_compat(fdt, compat, prop, &val, 4, create);
}
int fdt_fixup_memory(void *blob, u64 start, u64 size)
{
int err, nodeoffset, len = 0;
u8 tmp[16];
const u32 *addrcell, *sizecell;
err = fdt_check_header(blob);
if (err < 0) {
printf("%s: %s\n", __FUNCTION__, fdt_strerror(err));
return err;
}
/* update, or add and update /memory node */
nodeoffset = fdt_path_offset(blob, "/memory");
if (nodeoffset < 0) {
nodeoffset = fdt_add_subnode(blob, 0, "memory");
if (nodeoffset < 0)
printf("WARNING: could not create /memory: %s.\n",
fdt_strerror(nodeoffset));
return nodeoffset;
}
err = fdt_setprop(blob, nodeoffset, "device_type", "memory",
sizeof("memory"));
if (err < 0) {
printf("WARNING: could not set %s %s.\n", "device_type",
fdt_strerror(err));
return err;
}
addrcell = fdt_getprop(blob, 0, "#address-cells", NULL);
/* use shifts and mask to ensure endianness */
if ((addrcell) && (*addrcell == 2)) {
tmp[0] = (start >> 56) & 0xff;
tmp[1] = (start >> 48) & 0xff;
tmp[2] = (start >> 40) & 0xff;
tmp[3] = (start >> 32) & 0xff;
tmp[4] = (start >> 24) & 0xff;
tmp[5] = (start >> 16) & 0xff;
tmp[6] = (start >> 8) & 0xff;
tmp[7] = (start ) & 0xff;
len = 8;
} else {
tmp[0] = (start >> 24) & 0xff;
tmp[1] = (start >> 16) & 0xff;
tmp[2] = (start >> 8) & 0xff;
tmp[3] = (start ) & 0xff;
len = 4;
}
sizecell = fdt_getprop(blob, 0, "#size-cells", NULL);
/* use shifts and mask to ensure endianness */
if ((sizecell) && (*sizecell == 2)) {
tmp[0+len] = (size >> 56) & 0xff;
tmp[1+len] = (size >> 48) & 0xff;
tmp[2+len] = (size >> 40) & 0xff;
tmp[3+len] = (size >> 32) & 0xff;
tmp[4+len] = (size >> 24) & 0xff;
tmp[5+len] = (size >> 16) & 0xff;
tmp[6+len] = (size >> 8) & 0xff;
tmp[7+len] = (size ) & 0xff;
len += 8;
} else {
tmp[0+len] = (size >> 24) & 0xff;
tmp[1+len] = (size >> 16) & 0xff;
tmp[2+len] = (size >> 8) & 0xff;
tmp[3+len] = (size ) & 0xff;
len += 4;
}
err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
if (err < 0) {
printf("WARNING: could not set %s %s.\n",
"reg", fdt_strerror(err));
return err;
}
return 0;
}
void fdt_fixup_ethernet(void *fdt, bd_t *bd)
{
int node;

1
include/fdt_support.h
View File

@ -44,6 +44,7 @@ void do_fixup_by_compat(void *fdt, const char *compat,
const char *prop, const void *val, int len, int create);
void do_fixup_by_compat_u32(void *fdt, const char *compat,
const char *prop, u32 val, int create);
int fdt_fixup_memory(void *blob, u64 start, u64 size);
void fdt_fixup_ethernet(void *fdt, bd_t *bd);
#ifdef CONFIG_OF_HAS_UBOOT_ENV