| /* |
| * Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation |
| * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) |
| * |
| * 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 Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| /* |
| * Setup code for the SWARM board |
| */ |
| |
| #include <linux/spinlock.h> |
| #include <linux/mm.h> |
| #include <linux/memblock.h> |
| #include <linux/blkdev.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/screen_info.h> |
| #include <linux/initrd.h> |
| |
| #include <asm/irq.h> |
| #include <asm/io.h> |
| #include <asm/bootinfo.h> |
| #include <asm/mipsregs.h> |
| #include <asm/reboot.h> |
| #include <asm/time.h> |
| #include <asm/traps.h> |
| #include <asm/sibyte/sb1250.h> |
| #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) |
| #include <asm/sibyte/bcm1480_regs.h> |
| #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) |
| #include <asm/sibyte/sb1250_regs.h> |
| #else |
| #error invalid SiByte board configuration |
| #endif |
| #include <asm/sibyte/sb1250_genbus.h> |
| #include <asm/sibyte/board.h> |
| |
| #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) |
| extern void bcm1480_setup(void); |
| #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) |
| extern void sb1250_setup(void); |
| #else |
| #error invalid SiByte board configuration |
| #endif |
| |
| extern int xicor_probe(void); |
| extern int xicor_set_time(time64_t); |
| extern time64_t xicor_get_time(void); |
| |
| extern int m41t81_probe(void); |
| extern int m41t81_set_time(time64_t); |
| extern time64_t m41t81_get_time(void); |
| |
| const char *get_system_type(void) |
| { |
| return "SiByte " SIBYTE_BOARD_NAME; |
| } |
| |
| int swarm_be_handler(struct pt_regs *regs, int is_fixup) |
| { |
| if (!is_fixup && (regs->cp0_cause & 4)) { |
| /* Data bus error - print PA */ |
| printk("DBE physical address: %010Lx\n", |
| __read_64bit_c0_register($26, 1)); |
| } |
| return is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL; |
| } |
| |
| enum swarm_rtc_type { |
| RTC_NONE, |
| RTC_XICOR, |
| RTC_M41T81, |
| }; |
| |
| enum swarm_rtc_type swarm_rtc_type; |
| |
| void read_persistent_clock64(struct timespec64 *ts) |
| { |
| time64_t sec; |
| |
| switch (swarm_rtc_type) { |
| case RTC_XICOR: |
| sec = xicor_get_time(); |
| break; |
| |
| case RTC_M41T81: |
| sec = m41t81_get_time(); |
| break; |
| |
| case RTC_NONE: |
| default: |
| sec = mktime64(2000, 1, 1, 0, 0, 0); |
| break; |
| } |
| ts->tv_sec = sec; |
| ts->tv_nsec = 0; |
| } |
| |
| int update_persistent_clock64(struct timespec64 now) |
| { |
| time64_t sec = now.tv_sec; |
| |
| switch (swarm_rtc_type) { |
| case RTC_XICOR: |
| return xicor_set_time(sec); |
| |
| case RTC_M41T81: |
| return m41t81_set_time(sec); |
| |
| case RTC_NONE: |
| default: |
| return -1; |
| } |
| } |
| |
| void __init plat_mem_setup(void) |
| { |
| #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) |
| bcm1480_setup(); |
| #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) |
| sb1250_setup(); |
| #else |
| #error invalid SiByte board configuration |
| #endif |
| |
| board_be_handler = swarm_be_handler; |
| |
| if (xicor_probe()) |
| swarm_rtc_type = RTC_XICOR; |
| if (m41t81_probe()) |
| swarm_rtc_type = RTC_M41T81; |
| |
| #ifdef CONFIG_VT |
| screen_info = (struct screen_info) { |
| .orig_video_page = 52, |
| .orig_video_mode = 3, |
| .orig_video_cols = 80, |
| .flags = 12, |
| .orig_video_ega_bx = 3, |
| .orig_video_lines = 25, |
| .orig_video_isVGA = 0x22, |
| .orig_video_points = 16, |
| }; |
| /* XXXKW for CFE, get lines/cols from environment */ |
| #endif |
| } |
| |
| #ifdef LEDS_PHYS |
| |
| #ifdef CONFIG_SIBYTE_CARMEL |
| /* XXXKW need to detect Monterey/LittleSur/etc */ |
| #undef LEDS_PHYS |
| #define LEDS_PHYS MLEDS_PHYS |
| #endif |
| |
| void setleds(char *str) |
| { |
| void *reg; |
| int i; |
| |
| for (i = 0; i < 4; i++) { |
| reg = IOADDR(LEDS_PHYS) + 0x20 + ((3 - i) << 3); |
| |
| if (!str[i]) |
| writeb(' ', reg); |
| else |
| writeb(str[i], reg); |
| } |
| } |
| |
| #endif /* LEDS_PHYS */ |