diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.38/016-MIPS-BCM47xx-Remove-CFE-console.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-2.6.38/016-MIPS-BCM47xx-Remove-CFE-console.patch | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.38/016-MIPS-BCM47xx-Remove-CFE-console.patch b/target/linux/brcm47xx/patches-2.6.38/016-MIPS-BCM47xx-Remove-CFE-console.patch new file mode 100644 index 000000000..69f3a9beb --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.38/016-MIPS-BCM47xx-Remove-CFE-console.patch @@ -0,0 +1,141 @@ +From 5219981646071abb6731634bf47781a53e248764 Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Sun, 18 Jul 2010 15:11:26 +0200 +Subject: [PATCH 6/6] MIPS: BCM47xx: Remove CFE console + +Do not use the CFE console. It causes hangs on some devices like the +Buffalo WHR-HP-G54. +This was reported in https://dev.openwrt.org/ticket/4061 and +https://forum.openwrt.org/viewtopic.php?id=17063 + +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +--- + arch/mips/Kconfig | 1 - + arch/mips/bcm47xx/prom.c | 82 +++------------------------------------------ + 2 files changed, 6 insertions(+), 77 deletions(-) + +--- a/arch/mips/Kconfig ++++ b/arch/mips/Kconfig +@@ -100,7 +100,6 @@ config BCM47XX + select SSB_B43_PCI_BRIDGE if PCI + select SSB_PCICORE_HOSTMODE if PCI + select GENERIC_GPIO +- select SYS_HAS_EARLY_PRINTK + select CFE + help + Support for BCM47XX based boards +--- a/arch/mips/bcm47xx/prom.c ++++ b/arch/mips/bcm47xx/prom.c +@@ -31,96 +31,28 @@ + #include <asm/fw/cfe/cfe_api.h> + #include <asm/fw/cfe/cfe_error.h> + +-static int cfe_cons_handle; +- + const char *get_system_type(void) + { + return "Broadcom BCM47XX"; + } + +-void prom_putchar(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]; +- } +- } ++ ++ cfe_eptseal = (uint32_t) fw_arg3; ++ cfe_handle = (uint32_t) fw_arg0; ++ cfe_ept = (uint32_t) fw_arg2; + + 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) ; ++ return -1; + } + + cfe_init(cfe_handle, cfe_ept); +-} +- +-static __init void prom_init_console(void) +-{ +- /* Initialize CFE console */ +- cfe_cons_handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE); +-} +- +-static __init void prom_init_cmdline(void) +-{ +- static char buf[COMMAND_LINE_SIZE] __initdata; +- +- /* Get the kernel command line from CFE */ +- if (cfe_getenv("LINUX_CMDLINE", buf, COMMAND_LINE_SIZE) >= 0) { +- buf[COMMAND_LINE_SIZE - 1] = 0; +- strcpy(arcs_cmdline, buf); +- } +- +- /* Force a console handover by adding a console= argument if needed, +- * as CFE is not available anymore later in the boot process. */ +- if ((strstr(arcs_cmdline, "console=")) == NULL) { +- /* Try to read the default serial port used by CFE */ +- if ((cfe_getenv("BOOT_CONSOLE", buf, COMMAND_LINE_SIZE) < 0) +- || (strncmp("uart", buf, 4))) +- /* Default to uart0 */ +- strcpy(buf, "uart0"); +- +- /* Compute the new command line */ +- snprintf(arcs_cmdline, COMMAND_LINE_SIZE, "%s console=ttyS%c,115200", +- arcs_cmdline, buf[4]); +- } ++ return 0; + } + + static __init void prom_init_mem(void) +@@ -161,8 +93,6 @@ static __init void prom_init_mem(void) + void __init prom_init(void) + { + prom_init_cfe(); +- prom_init_console(); +- prom_init_cmdline(); + prom_init_mem(); + } + |