^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * arch/sh/kernel/setup.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * This file handles the architecture-dependent parts of initialization
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 1999 Niibe Yutaka
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 2002 - 2010 Paul Mundt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/screen_info.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/initrd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/console.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/root_dev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/utsname.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/nodemask.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/pfn.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/kexec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/crash_dump.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/mmzone.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/memblock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/of_fdt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <uapi/linux/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <asm/page.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <asm/elf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <asm/sections.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <asm/clock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <asm/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <asm/mmu_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <asm/mmzone.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <asm/sparsemem.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <asm/platform_early.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * Initialize loops_per_jiffy as 10000000 (1000MIPS).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * This value will be used at the very early stage of serial setup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * The bigger value means no problem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) [0] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) .type = CPU_SH_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) .family = CPU_FAMILY_UNKNOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) .loops_per_jiffy = 10000000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) .phys_bits = MAX_PHYSMEM_BITS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) EXPORT_SYMBOL(cpu_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * The machine vector. First entry in .machvec.init, or clobbered by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * sh_mv= on the command line, prior to .machvec.init teardown.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct sh_machine_vector sh_mv = { .mv_name = "generic", };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) EXPORT_SYMBOL(sh_mv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #ifdef CONFIG_VT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct screen_info screen_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) extern int root_mountflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define RAMDISK_IMAGE_START_MASK 0x07FF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define RAMDISK_PROMPT_FLAG 0x8000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define RAMDISK_LOAD_FLAG 0x4000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static struct resource code_resource = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .name = "Kernel code",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static struct resource data_resource = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .name = "Kernel data",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static struct resource bss_resource = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .name = "Kernel bss",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) unsigned long memory_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) EXPORT_SYMBOL(memory_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) unsigned long memory_end = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) EXPORT_SYMBOL(memory_end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) unsigned long memory_limit = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static struct resource mem_resources[MAX_NUMNODES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static int __init early_parse_mem(char *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) memory_limit = PAGE_ALIGN(memparse(p, &p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) pr_notice("Memory limited to %ldMB\n", memory_limit >> 20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) early_param("mem", early_parse_mem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) void __init check_for_initrd(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #ifdef CONFIG_BLK_DEV_INITRD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) unsigned long start, end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * Check for the rare cases where boot loaders adhere to the boot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * ABI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (!LOADER_TYPE || !INITRD_START || !INITRD_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) goto disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) start = INITRD_START + __MEMORY_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) end = start + INITRD_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (unlikely(end <= start))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) goto disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (unlikely(start & ~PAGE_MASK)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) pr_err("initrd must be page aligned\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) goto disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (unlikely(start < __MEMORY_START)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) pr_err("initrd start (%08lx) < __MEMORY_START(%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) start, __MEMORY_START);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) goto disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (unlikely(end > memblock_end_of_DRAM())) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) pr_err("initrd extends beyond end of memory "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) end, (unsigned long)memblock_end_of_DRAM());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) goto disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * If we got this far in spite of the boot loader's best efforts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * to the contrary, assume we actually have a valid initrd and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * fix up the root dev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) ROOT_DEV = Root_RAM0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * Address sanitization
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) initrd_start = (unsigned long)__va(start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) initrd_end = initrd_start + INITRD_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) memblock_reserve(__pa(initrd_start), INITRD_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) disable:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) pr_info("initrd disabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) initrd_start = initrd_end = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) #ifndef CONFIG_GENERIC_CALIBRATE_DELAY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) void calibrate_delay(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) struct clk *clk = clk_get(NULL, "cpu_clk");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (IS_ERR(clk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) panic("Need a sane CPU clock definition!");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) loops_per_jiffy = (clk_get_rate(clk) >> 1) / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) printk(KERN_INFO "Calibrating delay loop (skipped)... "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) "%lu.%02lu BogoMIPS PRESET (lpj=%lu)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) loops_per_jiffy/(500000/HZ),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) (loops_per_jiffy/(5000/HZ)) % 100,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) loops_per_jiffy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) unsigned long end_pfn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct resource *res = &mem_resources[nid];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) unsigned long start, end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) WARN_ON(res->name); /* max one active range per node for now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) start = start_pfn << PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) end = end_pfn << PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) res->name = "System RAM";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) res->start = start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) res->end = end - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (request_resource(&iomem_resource, res)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) pr_err("unable to request memory_resource 0x%lx 0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) start_pfn, end_pfn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) * We don't know which RAM region contains kernel data or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * the reserved crashkernel region, so try it repeatedly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * and let the resource manager test it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) request_resource(res, &code_resource);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) request_resource(res, &data_resource);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) request_resource(res, &bss_resource);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) #ifdef CONFIG_KEXEC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) request_resource(res, &crashk_res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * Also make sure that there is a PMB mapping that covers this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * range before we attempt to activate it, to avoid reset by MMU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * We can hit this path with NUMA or memory hot-add.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) pmb_bolt_mapping((unsigned long)__va(start), start, end - start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) PAGE_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) memblock_set_node(PFN_PHYS(start_pfn), PFN_PHYS(end_pfn - start_pfn),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) &memblock.memory, nid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) void __init __weak plat_early_device_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #ifdef CONFIG_OF_FLATTREE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) void __ref sh_fdt_init(phys_addr_t dt_phys)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static int done = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) void *dt_virt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) /* Avoid calling an __init function on secondary cpus. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) if (done) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) #ifdef CONFIG_USE_BUILTIN_DTB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) dt_virt = __dtb_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) dt_virt = phys_to_virt(dt_phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (!dt_virt || !early_init_dt_scan(dt_virt)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) pr_crit("Error: invalid device tree blob"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) " at physical address %p\n", (void *)dt_phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) while (true)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) cpu_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) done = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) void __init setup_arch(char **cmdline_p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) enable_mmu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) printk(KERN_NOTICE "Boot params:\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) "... MOUNT_ROOT_RDONLY - %08lx\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) "... RAMDISK_FLAGS - %08lx\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) "... ORIG_ROOT_DEV - %08lx\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) "... LOADER_TYPE - %08lx\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) "... INITRD_START - %08lx\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) "... INITRD_SIZE - %08lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) MOUNT_ROOT_RDONLY, RAMDISK_FLAGS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) ORIG_ROOT_DEV, LOADER_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) INITRD_START, INITRD_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) #ifdef CONFIG_BLK_DEV_RAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) if (!MOUNT_ROOT_RDONLY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) root_mountflags &= ~MS_RDONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) init_mm.start_code = (unsigned long) _text;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) init_mm.end_code = (unsigned long) _etext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) init_mm.end_data = (unsigned long) _edata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) init_mm.brk = (unsigned long) _end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) code_resource.start = virt_to_phys(_text);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) code_resource.end = virt_to_phys(_etext)-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) data_resource.start = virt_to_phys(_etext);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) data_resource.end = virt_to_phys(_edata)-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) bss_resource.start = virt_to_phys(__bss_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) bss_resource.end = virt_to_phys(__bss_stop)-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) #ifdef CONFIG_CMDLINE_OVERWRITE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) strlcpy(command_line, COMMAND_LINE, sizeof(command_line));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) #ifdef CONFIG_CMDLINE_EXTEND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) strlcat(command_line, " ", sizeof(command_line));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) strlcat(command_line, CONFIG_CMDLINE, sizeof(command_line));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) /* Save unparsed command line copy for /proc/cmdline */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) *cmdline_p = command_line;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) parse_early_param();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) plat_early_device_setup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) sh_mv_setup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /* Let earlyprintk output early console messages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) sh_early_platform_driver_probe("earlyprintk", 1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) #ifdef CONFIG_OF_FLATTREE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) #ifdef CONFIG_USE_BUILTIN_DTB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) unflatten_and_copy_device_tree();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) unflatten_device_tree();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) paging_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) /* Perform the machine specific initialisation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) if (likely(sh_mv.mv_setup))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) sh_mv.mv_setup(cmdline_p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) plat_smp_setup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) /* processor boot mode configuration */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) int generic_mode_pins(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) pr_warn("generic_mode_pins(): missing mode pin configuration\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) int test_mode_pin(int pin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) return sh_mv.mv_mode_pins() & pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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