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171 lines
3.5 KiB
171 lines
3.5 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation |
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* Copyright (C) 2004 by Ralf Baechle ([email protected]) |
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*/ |
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/* |
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* Setup code for the SWARM board |
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*/ |
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#include <linux/spinlock.h> |
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#include <linux/mm.h> |
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#include <linux/memblock.h> |
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#include <linux/blkdev.h> |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/screen_info.h> |
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#include <linux/initrd.h> |
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#include <asm/irq.h> |
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#include <asm/io.h> |
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#include <asm/bootinfo.h> |
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#include <asm/mipsregs.h> |
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#include <asm/reboot.h> |
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#include <asm/time.h> |
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#include <asm/traps.h> |
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#include <asm/sibyte/sb1250.h> |
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#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) |
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#include <asm/sibyte/bcm1480_regs.h> |
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#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) |
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#include <asm/sibyte/sb1250_regs.h> |
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#else |
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#error invalid SiByte board configuration |
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#endif |
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#include <asm/sibyte/sb1250_genbus.h> |
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#include <asm/sibyte/board.h> |
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#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) |
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extern void bcm1480_setup(void); |
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#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) |
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extern void sb1250_setup(void); |
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#else |
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#error invalid SiByte board configuration |
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#endif |
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extern int xicor_probe(void); |
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extern int xicor_set_time(time64_t); |
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extern time64_t xicor_get_time(void); |
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extern int m41t81_probe(void); |
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extern int m41t81_set_time(time64_t); |
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extern time64_t m41t81_get_time(void); |
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const char *get_system_type(void) |
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{ |
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return "SiByte " SIBYTE_BOARD_NAME; |
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} |
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int swarm_be_handler(struct pt_regs *regs, int is_fixup) |
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{ |
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if (!is_fixup && (regs->cp0_cause & 4)) { |
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/* Data bus error - print PA */ |
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printk("DBE physical address: %010Lx\n", |
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__read_64bit_c0_register($26, 1)); |
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} |
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return is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL; |
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} |
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enum swarm_rtc_type { |
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RTC_NONE, |
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RTC_XICOR, |
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RTC_M41T81, |
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}; |
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enum swarm_rtc_type swarm_rtc_type; |
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void read_persistent_clock64(struct timespec64 *ts) |
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{ |
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time64_t sec; |
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switch (swarm_rtc_type) { |
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case RTC_XICOR: |
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sec = xicor_get_time(); |
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break; |
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case RTC_M41T81: |
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sec = m41t81_get_time(); |
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break; |
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case RTC_NONE: |
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default: |
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sec = mktime64(2000, 1, 1, 0, 0, 0); |
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break; |
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} |
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ts->tv_sec = sec; |
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ts->tv_nsec = 0; |
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} |
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int update_persistent_clock64(struct timespec64 now) |
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{ |
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time64_t sec = now.tv_sec; |
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switch (swarm_rtc_type) { |
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case RTC_XICOR: |
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return xicor_set_time(sec); |
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case RTC_M41T81: |
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return m41t81_set_time(sec); |
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case RTC_NONE: |
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default: |
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return -1; |
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} |
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} |
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void __init plat_mem_setup(void) |
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{ |
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#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) |
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bcm1480_setup(); |
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#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) |
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sb1250_setup(); |
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#else |
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#error invalid SiByte board configuration |
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#endif |
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board_be_handler = swarm_be_handler; |
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if (xicor_probe()) |
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swarm_rtc_type = RTC_XICOR; |
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if (m41t81_probe()) |
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swarm_rtc_type = RTC_M41T81; |
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#ifdef CONFIG_VT |
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screen_info = (struct screen_info) { |
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.orig_video_page = 52, |
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.orig_video_mode = 3, |
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.orig_video_cols = 80, |
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.flags = 12, |
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.orig_video_ega_bx = 3, |
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.orig_video_lines = 25, |
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.orig_video_isVGA = 0x22, |
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.orig_video_points = 16, |
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}; |
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/* XXXKW for CFE, get lines/cols from environment */ |
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#endif |
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} |
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#ifdef LEDS_PHYS |
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#ifdef CONFIG_SIBYTE_CARMEL |
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/* XXXKW need to detect Monterey/LittleSur/etc */ |
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#undef LEDS_PHYS |
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#define LEDS_PHYS MLEDS_PHYS |
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#endif |
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void setleds(char *str) |
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{ |
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void *reg; |
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int i; |
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for (i = 0; i < 4; i++) { |
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reg = IOADDR(LEDS_PHYS) + 0x20 + ((3 - i) << 3); |
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if (!str[i]) |
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writeb(' ', reg); |
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else |
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writeb(str[i], reg); |
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} |
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} |
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#endif /* LEDS_PHYS */
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