diff options
Diffstat (limited to 'package/kexec-tools/patches/0005-ps3-kexec-load-legacy-kernel-hack.patch')
| -rw-r--r-- | package/kexec-tools/patches/0005-ps3-kexec-load-legacy-kernel-hack.patch | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/package/kexec-tools/patches/0005-ps3-kexec-load-legacy-kernel-hack.patch b/package/kexec-tools/patches/0005-ps3-kexec-load-legacy-kernel-hack.patch new file mode 100644 index 0000000000..6b7b37681d --- /dev/null +++ b/package/kexec-tools/patches/0005-ps3-kexec-load-legacy-kernel-hack.patch @@ -0,0 +1,187 @@ +Hack to load PS3 legacy kernels (2.6.16 and fc7 installer) with the 2.6.23 +mainline linux kernel. + +--- + kexec/arch/ppc64/fs2dt.c | 47 +++++++++++++++++++++++++++++++++++++ + kexec/arch/ppc64/kexec-elf-ppc64.c | 44 ++++++++++++++++++++++++++++++++++ + kexec/arch/ppc64/kexec-ppc64.c | 5 +++ + kexec/arch/ppc64/kexec-ppc64.h | 2 + + 4 files changed, 98 insertions(+) + +--- a/kexec/arch/ppc64/fs2dt.c ++++ b/kexec/arch/ppc64/fs2dt.c +@@ -262,6 +262,33 @@ static void putprops(char *fn, struct di + die("unrecoverable error: could not read \"%s\": %s\n", + pathname, strerror(errno)); + ++ /* ps3 legacy - Add 'PS3PF' to compatible */ ++ ++ if (ps3_legacy && !strcmp(dp->d_name, "compatible")) { ++ static const char s[] = "PS3PF"; ++ char *const tmp = (char *)dt + len; ++ ++ memcpy(tmp, s, sizeof(s)); ++ len += sizeof(s); ++ *dt_len = len; ++ ++ fprintf(stdout, "ps3 legacy: Changed dt entry " ++ "/compatible: <%s> -> <%s %s>\n", ++ (char *)dt, (char *)dt, tmp); ++ } ++ ++ /* ps3 legacy - force memory.reg to 224 MiB */ ++ ++ if (ps3_legacy && !strcmp(dp->d_name, "reg") && len == 16) { ++ uint64_t tmp = *((uint64_t *)dt + 1); ++ ++ *((uint64_t *)dt + 1) = 0xe000000ULL; ++ fprintf(stdout, "ps3 legacy: Changed dt entry " ++ "/memory/reg: <%llx> -> <%llx>\n", ++ (unsigned long long)tmp, ++ *((unsigned long long *)dt + 1)); ++ } ++ + checkprop(fn, dt, len); + + dt += (len + 3)/4; +@@ -360,6 +387,26 @@ static void putnode(void) + reserve(initrd_base, initrd_size); + } + ++ /* ps3 legacy - add entry linux,platform <801> */ ++ ++ if (ps3_legacy && !strcmp(basename,"/chosen/")) { ++ int len = 4; ++ static const uint32_t data = 0x801UL; ++ ++ *dt++ = 3; ++ *dt++ = len; ++ *dt++ = propnum("linux,platform"); ++ ++ if ((len >= 8) && ((unsigned long)dt & 0x4)) ++ dt++; ++ ++ memcpy(dt,&data,len); ++ dt += (len + 3)/4; ++ ++ fprintf(stdout, "ps3 legacy: Added dt entry " ++ "/chosen/linux,platform = <801>\n"); ++ } ++ + /* Add cmdline to the second kernel. Check to see if the new + * cmdline has a root=. If not, use the old root= cmdline. */ + if (!strcmp(basename,"/chosen/")) { +--- a/kexec/arch/ppc64/kexec-elf-ppc64.c ++++ b/kexec/arch/ppc64/kexec-elf-ppc64.c +@@ -45,6 +45,7 @@ + uint64_t initrd_base, initrd_size; + unsigned char reuse_initrd = 0; + const char *ramdisk; ++int ps3_legacy = -1; /* default to probe */ + + int create_flatten_tree(struct kexec_info *, unsigned char **, unsigned long *, + char *); +@@ -76,6 +77,33 @@ void arch_reuse_initrd(void) + reuse_initrd = 1; + } + ++/** ++ * ps3_legacy_probe - Probe kernel version. ++ */ ++ ++static int ps3_legacy_probe(const char *p, off_t len) ++{ ++ static const char d1[] = "linux,platform"; /* legacy 2.6.16 */ ++ static const char d2[] = "2.6.21-1.3194.fc7"; /* fedora 7 installer */ ++ const char *const end = p + len - sizeof(d2); ++ ++ while(p < end) { ++ if (p[0] == d1[0] && !memcmp(p, d1, sizeof(d1) - 1)) { ++ fprintf(stdout, "ps3 legacy: Legacy kernel found: " ++ "'%s'\n", d1); ++ break; ++ } ++ if (p[0] == d2[0] && !memcmp(p, d2, sizeof(d2) - 1)) { ++ fprintf(stdout, "ps3 legacy: Legacy kernel found: " ++ "'%s'\n", d2); ++ break; ++ } ++ p++; ++ } ++ ++ return (p != end); ++} ++ + int elf_ppc64_load(int argc, char **argv, const char *buf, off_t len, + struct kexec_info *info) + { +@@ -102,6 +130,8 @@ int elf_ppc64_load(int argc, char **argv + #define OPT_RAMDISK (OPT_ARCH_MAX+1) + #define OPT_DEVICETREEBLOB (OPT_ARCH_MAX+2) + #define OPT_ARGS_IGNORE (OPT_ARCH_MAX+3) ++#define OPT_PS3_LEGACY (OPT_ARCH_MAX+4) ++#define OPT_PS3_LEGACY_NO (OPT_ARCH_MAX+5) + + static const struct option options[] = { + KEXEC_ARCH_OPTIONS +@@ -111,6 +141,8 @@ int elf_ppc64_load(int argc, char **argv + { "initrd", 1, NULL, OPT_RAMDISK }, + { "devicetreeblob", 1, NULL, OPT_DEVICETREEBLOB }, + { "args-linux", 0, NULL, OPT_ARGS_IGNORE }, ++ { "ps3-legacy", 0, NULL, OPT_PS3_LEGACY }, ++ { "ps3-no-legacy", 0, NULL, OPT_PS3_LEGACY_NO }, + { 0, 0, NULL, 0 }, + }; + +@@ -146,9 +178,18 @@ int elf_ppc64_load(int argc, char **argv + break; + case OPT_ARGS_IGNORE: + break; ++ case OPT_PS3_LEGACY: ++ ps3_legacy = 1; ++ break; ++ case OPT_PS3_LEGACY_NO: ++ ps3_legacy = 0; ++ break; + } + } + ++ if (ps3_legacy == -1) ++ ps3_legacy = ps3_legacy_probe(buf, len); ++ + cmdline_len = 0; + if (cmdline) + cmdline_len = strlen(cmdline) + 1; +@@ -158,6 +199,9 @@ int elf_ppc64_load(int argc, char **argv + if (ramdisk && reuse_initrd) + die("Can't specify --ramdisk or --initrd with --reuseinitrd\n"); + ++ if (ps3_legacy && devicetreeblob) ++ die("Can't specify --devicetreeblob with --ps3-legacy\n"); ++ + setup_memory_ranges(info->kexec_flags); + + /* Need to append some command line parameters internally in case of +--- a/kexec/arch/ppc64/kexec-ppc64.c ++++ b/kexec/arch/ppc64/kexec-ppc64.c +@@ -650,6 +650,11 @@ void arch_usage(void) + fprintf(stderr, " --initrd=<filename> same as --ramdisk.\n"); + fprintf(stderr, " --devicetreeblob=<filename> Specify device tree blob file.\n"); + fprintf(stderr, " --elf64-core-headers Prepare core headers in ELF64 format\n"); ++ fprintf(stderr, " --ps3-legacy Make fixups needed to boot PS3 legacy kernels.\n"); ++ fprintf(stderr, " The default is to probe the kernel type.\n"); ++ fprintf(stderr, " --ps3-no-legacy Do not make fixups needed to boot PS3 legacy\n"); ++ fprintf(stderr, " kernels. The default is to probe the kernel\n"); ++ fprintf(stderr, " type.\n"); + } + + struct arch_options_t arch_options = { +--- a/kexec/arch/ppc64/kexec-ppc64.h ++++ b/kexec/arch/ppc64/kexec-ppc64.h +@@ -41,4 +41,6 @@ typedef struct mem_rgns { + + extern mem_rgns_t usablemem_rgns; + ++extern int ps3_legacy; ++ + #endif /* KEXEC_PPC64_H */ |