diff options
Diffstat (limited to 'target/linux/ipq806x/patches-5.4/0067-generic-Mangle-bootloader-s-kernel-arguments.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-5.4/0067-generic-Mangle-bootloader-s-kernel-arguments.patch | 63 |
1 files changed, 42 insertions, 21 deletions
diff --git a/target/linux/ipq806x/patches-5.4/0067-generic-Mangle-bootloader-s-kernel-arguments.patch b/target/linux/ipq806x/patches-5.4/0067-generic-Mangle-bootloader-s-kernel-arguments.patch index 396309d203..99a64ccadc 100644 --- a/target/linux/ipq806x/patches-5.4/0067-generic-Mangle-bootloader-s-kernel-arguments.patch +++ b/target/linux/ipq806x/patches-5.4/0067-generic-Mangle-bootloader-s-kernel-arguments.patch @@ -51,41 +51,62 @@ Signed-off-by: Adrian Panella <ianchi74@outlook.com> #else #define do_extend_cmdline 0 #endif -@@ -67,6 +69,59 @@ static uint32_t get_cell_size(const void +@@ -67,6 +69,80 @@ static uint32_t get_cell_size(const void return cell_size; } +#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE) ++/** ++ * taken from arch/x86/boot/string.c ++ * local_strstr - Find the first substring in a %NUL terminated string ++ * @s1: The string to be searched ++ * @s2: The string to search for ++ */ ++static char *local_strstr(const char *s1, const char *s2) ++{ ++ size_t l1, l2; ++ ++ l2 = strlen(s2); ++ if (!l2) ++ return (char *)s1; ++ l1 = strlen(s1); ++ while (l1 >= l2) { ++ l1--; ++ if (!memcmp(s1, s2, l2)) ++ return (char *)s1; ++ s1++; ++ } ++ return NULL; ++} + +static char *append_rootblock(char *dest, const char *str, int len, void *fdt) +{ -+ char *ptr, *end; ++ char *ptr, *end, *tmp; + char *root="root="; ++ char *find_rootblock; + int i, l; + const char *rootblock; + -+ //ARM doesn't have __HAVE_ARCH_STRSTR, so search manually -+ ptr = str - 1; -+ -+ do { -+ //first find an 'r' at the begining or after a space -+ do { -+ ptr++; -+ ptr = strchr(ptr, 'r'); -+ if(!ptr) return dest; ++ find_rootblock = getprop(fdt, "/chosen", "find-rootblock", &l); ++ if(!find_rootblock) ++ find_rootblock = root; + -+ } while (ptr != str && *(ptr-1) != ' '); ++ //ARM doesn't have __HAVE_ARCH_STRSTR, so it was copied from x86 ++ ptr = local_strstr(str, find_rootblock); + -+ //then check for the rest -+ for(i = 1; i <= 4; i++) -+ if(*(ptr+i) != *(root+i)) break; -+ -+ } while (i != 5); ++ if(!ptr) ++ return dest; + + end = strchr(ptr, ' '); + end = end ? (end - 1) : (strchr(ptr, 0) - 1); + -+ //find partition number (assumes format root=/dev/mtdXX | /dev/mtdblockXX | yy:XX ) ++ // Some boards ubi.mtd=XX,ZZZZ, so let's check for '," too. ++ tmp = strchr(ptr, ','); ++ ++ if(tmp) ++ end = end < tmp ? end : tmp - 1; ++ ++ //find partition number (assumes format root=/dev/mtdXX | /dev/mtdblockXX | yy:XX | ubi.mtd=XX,ZZZZ ) + for( i = 0; end >= ptr && *end >= '0' && *end <= '9'; end--, i++); + ptr = end + 1; + @@ -111,7 +132,7 @@ Signed-off-by: Adrian Panella <ianchi74@outlook.com> static void merge_fdt_bootargs(void *fdt, const char *fdt_cmdline) { char cmdline[COMMAND_LINE_SIZE]; -@@ -86,12 +141,21 @@ static void merge_fdt_bootargs(void *fdt +@@ -86,12 +162,21 @@ static void merge_fdt_bootargs(void *fdt /* and append the ATAG_CMDLINE */ if (fdt_cmdline) { @@ -133,7 +154,7 @@ Signed-off-by: Adrian Panella <ianchi74@outlook.com> } *ptr = '\0'; -@@ -166,7 +230,9 @@ int atags_to_fdt(void *atag_list, void * +@@ -166,7 +251,9 @@ int atags_to_fdt(void *atag_list, void * else setprop_string(fdt, "/chosen", "bootargs", atag->u.cmdline.cmdline); @@ -144,7 +165,7 @@ Signed-off-by: Adrian Panella <ianchi74@outlook.com> if (memcount >= sizeof(mem_reg_property)/4) continue; if (!atag->u.mem.size) -@@ -210,6 +276,10 @@ int atags_to_fdt(void *atag_list, void * +@@ -210,6 +297,10 @@ int atags_to_fdt(void *atag_list, void * setprop(fdt, "/memory", "reg", mem_reg_property, 4 * memcount * memsize); } |