diff options
| -rw-r--r-- | target/linux/brcm47xx/patches-2.6.25/800-fix_cfe_detection.patch | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.25/800-fix_cfe_detection.patch b/target/linux/brcm47xx/patches-2.6.25/800-fix_cfe_detection.patch new file mode 100644 index 0000000000..e72f99e803 --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.25/800-fix_cfe_detection.patch @@ -0,0 +1,108 @@ +--- a/arch/mips/bcm47xx/prom.c ++++ b/arch/mips/bcm47xx/prom.c +@@ -32,6 +32,7 @@ + #include <asm/fw/cfe/cfe_error.h> + + static int cfe_cons_handle; ++static void (* __prom_putchar)(char c); + + const char *get_system_type(void) + { +@@ -40,65 +41,40 @@ + + void prom_putchar(char c) + { ++ if (__prom_putchar) ++ __prom_putchar(c); ++} ++ ++void prom_putchar_cfe(char c) ++{ + while (cfe_write(cfe_cons_handle, &c, 1) == 0) + ; + } + +-static __init void prom_init_cfe(void) ++static __init int prom_init_cfe(void) + { + uint32_t cfe_ept; + uint32_t cfe_handle; + uint32_t cfe_eptseal; +- int argc = fw_arg0; +- char **envp = (char **) fw_arg2; +- int *prom_vec = (int *) fw_arg3; +- +- /* +- * Check if a loader was used; if NOT, the 4 arguments are +- * what CFE gives us (handle, 0, EPT and EPTSEAL) +- */ +- if (argc < 0) { +- cfe_handle = (uint32_t)argc; +- cfe_ept = (uint32_t)envp; +- cfe_eptseal = (uint32_t)prom_vec; +- } else { +- if ((int)prom_vec < 0) { +- /* +- * Old loader; all it gives us is the handle, +- * so use the "known" entrypoint and assume +- * the seal. +- */ +- cfe_handle = (uint32_t)prom_vec; +- cfe_ept = 0xBFC00500; +- cfe_eptseal = CFE_EPTSEAL; +- } else { +- /* +- * Newer loaders bundle the handle/ept/eptseal +- * Note: prom_vec is in the loader's useg +- * which is still alive in the TLB. +- */ +- cfe_handle = prom_vec[0]; +- cfe_ept = prom_vec[2]; +- cfe_eptseal = prom_vec[3]; +- } +- } + +- if (cfe_eptseal != CFE_EPTSEAL) { +- /* too early for panic to do any good */ +- printk(KERN_ERR "CFE's entrypoint seal doesn't match."); +- while (1) ; +- } ++ cfe_eptseal = (uint32_t) fw_arg3; ++ cfe_handle = (uint32_t) fw_arg0; ++ cfe_ept = (uint32_t) fw_arg2; ++ ++ if (cfe_eptseal != CFE_EPTSEAL) ++ return -1; + + cfe_init(cfe_handle, cfe_ept); ++ return 0; + } + +-static __init void prom_init_console(void) ++static __init void prom_init_console_cfe(void) + { + /* Initialize CFE console */ + cfe_cons_handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE); + } + +-static __init void prom_init_cmdline(void) ++static __init void prom_init_cmdline_cfe(void) + { + char buf[CL_SIZE]; + +@@ -146,9 +122,12 @@ + + void __init prom_init(void) + { +- prom_init_cfe(); +- prom_init_console(); +- prom_init_cmdline(); ++ if (prom_init_cfe() == 0) { ++ prom_init_console_cfe(); ++ prom_init_cmdline_cfe(); ++ __prom_putchar = prom_putchar_cfe; ++ } ++ + prom_init_mem(); + } + |