diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/Kconfig | 2 | ||||
| -rw-r--r-- | arch/mips/bcm47xx/prom.c | 113 | ||||
| -rw-r--r-- | arch/mips/bcm47xx/setup.c | 51 |
3 files changed, 161 insertions, 5 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 4863494bac9..371434dd744 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -55,6 +55,8 @@ config BCM47XX select SSB select SSB_DRIVER_MIPS select GENERIC_GPIO + select SYS_HAS_EARLY_PRINTK + select CFE help Support for BCM47XX based boards diff --git a/arch/mips/bcm47xx/prom.c b/arch/mips/bcm47xx/prom.c index 41ac9dd88bd..079e33d5278 100644 --- a/arch/mips/bcm47xx/prom.c +++ b/arch/mips/bcm47xx/prom.c @@ -1,5 +1,6 @@ /* * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org> + * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -23,18 +24,117 @@ */ #include <linux/init.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> #include <asm/bootinfo.h> +#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 __init prom_init(void) +void prom_putchar(char c) +{ + while (cfe_write(cfe_cons_handle, &c, 1) == 0) + ; +} + +static __init void 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_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) +{ + char buf[CL_SIZE]; + + /* Get the kernel command line from CFE */ + if (cfe_getenv("LINUX_CMDLINE", buf, CL_SIZE) >= 0) { + buf[CL_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, CL_SIZE) < 0) + || (strncmp("uart", buf, 4))) + /* Default to uart0 */ + strcpy(buf, "uart0"); + + /* Compute the new command line */ + snprintf(arcs_cmdline, CL_SIZE, "%s console=ttyS%c,115200", + arcs_cmdline, buf[4]); + } +} + +static __init void prom_init_mem(void) { unsigned long mem; - /* Figure out memory size by finding aliases */ + /* Figure out memory size by finding aliases. + * + * We should theoretically use the mapping from CFE using cfe_enummem(). + * However as the BCM47XX is mostly used on low-memory systems, we + * want to reuse the memory used by CFE (around 4MB). That means cfe_* + * functions stop to work at some point during the boot, we should only + * call them at the beginning of the boot. + */ for (mem = (1 << 20); mem < (128 << 20); mem += (1 << 20)) { if (*(unsigned long *)((unsigned long)(prom_init) + mem) == *(unsigned long *)(prom_init)) @@ -44,6 +144,15 @@ void __init prom_init(void) add_memory_region(0, mem, BOOT_MEM_RAM); } +void __init prom_init(void) +{ + prom_init_cfe(); + prom_init_console(); + prom_init_cmdline(); + prom_init_mem(); +} + void __init prom_free_prom_memory(void) { } + diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c index dfc580aae95..f48aa5aa9bf 100644 --- a/arch/mips/bcm47xx/setup.c +++ b/arch/mips/bcm47xx/setup.c @@ -27,9 +27,11 @@ #include <linux/types.h> #include <linux/ssb/ssb.h> +#include <asm/bootinfo.h> #include <asm/reboot.h> #include <asm/time.h> #include <bcm47xx.h> +#include <asm/fw/cfe/cfe_api.h> struct ssb_bus ssb_bcm47xx; EXPORT_SYMBOL(ssb_bcm47xx); @@ -53,12 +55,55 @@ static void bcm47xx_machine_halt(void) cpu_relax(); } +static void str2eaddr(char *str, char *dest) +{ + int i = 0; + + if (str == NULL) { + memset(dest, 0, 6); + return; + } + + for (;;) { + dest[i++] = (char) simple_strtoul(str, NULL, 16); + str += 2; + if (!*str++ || i == 6) + break; + } +} + static int bcm47xx_get_invariants(struct ssb_bus *bus, struct ssb_init_invariants *iv) { - /* TODO: fill ssb_init_invariants using boardtype/boardrev - * CFE environment variables. - */ + char buf[100]; + + /* Fill boardinfo structure */ + memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo)); + + if (cfe_getenv("boardvendor", buf, sizeof(buf)) >= 0) + iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0); + if (cfe_getenv("boardtype", buf, sizeof(buf)) >= 0) + iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0); + if (cfe_getenv("boardrev", buf, sizeof(buf)) >= 0) + iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0); + + /* Fill sprom structure */ + memset(&(iv->sprom), 0, sizeof(struct ssb_sprom)); + iv->sprom.revision = 3; + + if (cfe_getenv("et0macaddr", buf, sizeof(buf)) >= 0) + str2eaddr(buf, iv->sprom.r1.et0mac); + if (cfe_getenv("et1macaddr", buf, sizeof(buf)) >= 0) + str2eaddr(buf, iv->sprom.r1.et1mac); + if (cfe_getenv("et0phyaddr", buf, sizeof(buf)) >= 0) + iv->sprom.r1.et0phyaddr = simple_strtoul(buf, NULL, 10); + if (cfe_getenv("et1phyaddr", buf, sizeof(buf)) >= 0) + iv->sprom.r1.et1phyaddr = simple_strtoul(buf, NULL, 10); + if (cfe_getenv("et0mdcport", buf, sizeof(buf)) >= 0) + iv->sprom.r1.et0mdcport = simple_strtoul(buf, NULL, 10); + if (cfe_getenv("et1mdcport", buf, sizeof(buf)) >= 0) + iv->sprom.r1.et1mdcport = simple_strtoul(buf, NULL, 10); + return 0; } |