diff options
Diffstat (limited to 'arch/mips/bcm47xx/prom.c')
-rw-r--r-- | arch/mips/bcm47xx/prom.c | 127 |
1 files changed, 16 insertions, 111 deletions
diff --git a/arch/mips/bcm47xx/prom.c b/arch/mips/bcm47xx/prom.c index 5cba318bc1cd..0af808dfd1ca 100644 --- a/arch/mips/bcm47xx/prom.c +++ b/arch/mips/bcm47xx/prom.c @@ -28,126 +28,27 @@ #include <linux/types.h> #include <linux/kernel.h> #include <linux/spinlock.h> +#include <linux/ssb/ssb_driver_chipcommon.h> +#include <linux/ssb/ssb_regs.h> #include <linux/smp.h> #include <asm/bootinfo.h> -#include <asm/fw/cfe/cfe_api.h> -#include <asm/fw/cfe/cfe_error.h> #include <bcm47xx.h> #include <bcm47xx_board.h> -static int cfe_cons_handle; -static u16 get_chip_id(void) -{ - switch (bcm47xx_bus_type) { -#ifdef CONFIG_BCM47XX_SSB - case BCM47XX_BUS_TYPE_SSB: - return bcm47xx_bus.ssb.chip_id; -#endif -#ifdef CONFIG_BCM47XX_BCMA - case BCM47XX_BUS_TYPE_BCMA: - return bcm47xx_bus.bcma.bus.chipinfo.id; -#endif - } - return 0; -} +static char bcm47xx_system_type[20] = "Broadcom BCM47XX"; const char *get_system_type(void) { - static char buf[50]; - u16 chip_id = get_chip_id(); - - snprintf(buf, sizeof(buf), - (chip_id > 0x9999) ? "Broadcom BCM%d (%s)" : - "Broadcom BCM%04X (%s)", - chip_id, bcm47xx_board_get_name()); - - return buf; -} - -void prom_putchar(char c) -{ - while (cfe_write(cfe_cons_handle, &c, 1) == 0) - ; + return bcm47xx_system_type; } -static __init void prom_init_cfe(void) +__init void bcm47xx_set_system_type(u16 chip_id) { - 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) -{ - 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]); - } + snprintf(bcm47xx_system_type, sizeof(bcm47xx_system_type), + (chip_id > 0x9999) ? "Broadcom BCM%d" : + "Broadcom BCM%04X", + chip_id); } static __init void prom_init_mem(void) @@ -195,12 +96,16 @@ static __init void prom_init_mem(void) add_memory_region(0, mem, BOOT_MEM_RAM); } +/* + * This is the first serial on the chip common core, it is at this position + * for sb (ssb) and ai (bcma) bus. + */ +#define BCM47XX_SERIAL_ADDR (SSB_ENUM_BASE + SSB_CHIPCO_UART0_DATA) + void __init prom_init(void) { - prom_init_cfe(); - prom_init_console(); - prom_init_cmdline(); prom_init_mem(); + setup_8250_early_printk_port(CKSEG1ADDR(BCM47XX_SERIAL_ADDR), 0, 0); } void __init prom_free_prom_memory(void) |