+++ /dev/null
-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 */
projects / openwrt.git / commitdiff