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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2000, 2001, 2002, 2003, 2004 Broadcom Corporation * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) */ /* * Setup code for the SWARM board */ #include <linux/spinlock.h> #include <linux/mm.h> #include <linux/memblock.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 mips_set_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 */ |