diff options
author | Paolo Bonzini <pbonzini@redhat.com> | 2013-02-05 12:03:15 +0100 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2013-03-01 15:01:19 +0100 |
commit | 530182169e897c0e401b245552a4c58dc6846912 (patch) | |
tree | 8c39251d7e89855a89d925359f71639400782cd6 /hw/arm_boot.c | |
parent | e4c8b28cde12d01ada8fe869567dc5717a2dfcb7 (diff) |
hw: move boards and other isolated files to hw/ARCH
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/arm_boot.c')
-rw-r--r-- | hw/arm_boot.c | 480 |
1 files changed, 0 insertions, 480 deletions
diff --git a/hw/arm_boot.c b/hw/arm_boot.c deleted file mode 100644 index 43253fd34a..0000000000 --- a/hw/arm_boot.c +++ /dev/null @@ -1,480 +0,0 @@ -/* - * ARM kernel loader. - * - * Copyright (c) 2006-2007 CodeSourcery. - * Written by Paul Brook - * - * This code is licensed under the GPL. - */ - -#include "config.h" -#include "hw/hw.h" -#include "hw/arm-misc.h" -#include "sysemu/sysemu.h" -#include "hw/boards.h" -#include "hw/loader.h" -#include "elf.h" -#include "sysemu/device_tree.h" -#include "qemu/config-file.h" - -#define KERNEL_ARGS_ADDR 0x100 -#define KERNEL_LOAD_ADDR 0x00010000 - -/* The worlds second smallest bootloader. Set r0-r2, then jump to kernel. */ -static uint32_t bootloader[] = { - 0xe3a00000, /* mov r0, #0 */ - 0xe59f1004, /* ldr r1, [pc, #4] */ - 0xe59f2004, /* ldr r2, [pc, #4] */ - 0xe59ff004, /* ldr pc, [pc, #4] */ - 0, /* Board ID */ - 0, /* Address of kernel args. Set by integratorcp_init. */ - 0 /* Kernel entry point. Set by integratorcp_init. */ -}; - -/* Handling for secondary CPU boot in a multicore system. - * Unlike the uniprocessor/primary CPU boot, this is platform - * dependent. The default code here is based on the secondary - * CPU boot protocol used on realview/vexpress boards, with - * some parameterisation to increase its flexibility. - * QEMU platform models for which this code is not appropriate - * should override write_secondary_boot and secondary_cpu_reset_hook - * instead. - * - * This code enables the interrupt controllers for the secondary - * CPUs and then puts all the secondary CPUs into a loop waiting - * for an interprocessor interrupt and polling a configurable - * location for the kernel secondary CPU entry point. - */ -#define DSB_INSN 0xf57ff04f -#define CP15_DSB_INSN 0xee070f9a /* mcr cp15, 0, r0, c7, c10, 4 */ - -static uint32_t smpboot[] = { - 0xe59f2028, /* ldr r2, gic_cpu_if */ - 0xe59f0028, /* ldr r0, startaddr */ - 0xe3a01001, /* mov r1, #1 */ - 0xe5821000, /* str r1, [r2] - set GICC_CTLR.Enable */ - 0xe3a010ff, /* mov r1, #0xff */ - 0xe5821004, /* str r1, [r2, 4] - set GIC_PMR.Priority to 0xff */ - DSB_INSN, /* dsb */ - 0xe320f003, /* wfi */ - 0xe5901000, /* ldr r1, [r0] */ - 0xe1110001, /* tst r1, r1 */ - 0x0afffffb, /* beq <wfi> */ - 0xe12fff11, /* bx r1 */ - 0, /* gic_cpu_if: base address of GIC CPU interface */ - 0 /* bootreg: Boot register address is held here */ -}; - -static void default_write_secondary(ARMCPU *cpu, - const struct arm_boot_info *info) -{ - int n; - smpboot[ARRAY_SIZE(smpboot) - 1] = info->smp_bootreg_addr; - smpboot[ARRAY_SIZE(smpboot) - 2] = info->gic_cpu_if_addr; - for (n = 0; n < ARRAY_SIZE(smpboot); n++) { - /* Replace DSB with the pre-v7 DSB if necessary. */ - if (!arm_feature(&cpu->env, ARM_FEATURE_V7) && - smpboot[n] == DSB_INSN) { - smpboot[n] = CP15_DSB_INSN; - } - smpboot[n] = tswap32(smpboot[n]); - } - rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot), - info->smp_loader_start); -} - -static void default_reset_secondary(ARMCPU *cpu, - const struct arm_boot_info *info) -{ - CPUARMState *env = &cpu->env; - - stl_phys_notdirty(info->smp_bootreg_addr, 0); - env->regs[15] = info->smp_loader_start; -} - -#define WRITE_WORD(p, value) do { \ - stl_phys_notdirty(p, value); \ - p += 4; \ -} while (0) - -static void set_kernel_args(const struct arm_boot_info *info) -{ - int initrd_size = info->initrd_size; - hwaddr base = info->loader_start; - hwaddr p; - - p = base + KERNEL_ARGS_ADDR; - /* ATAG_CORE */ - WRITE_WORD(p, 5); - WRITE_WORD(p, 0x54410001); - WRITE_WORD(p, 1); - WRITE_WORD(p, 0x1000); - WRITE_WORD(p, 0); - /* ATAG_MEM */ - /* TODO: handle multiple chips on one ATAG list */ - WRITE_WORD(p, 4); - WRITE_WORD(p, 0x54410002); - WRITE_WORD(p, info->ram_size); - WRITE_WORD(p, info->loader_start); - if (initrd_size) { - /* ATAG_INITRD2 */ - WRITE_WORD(p, 4); - WRITE_WORD(p, 0x54420005); - WRITE_WORD(p, info->initrd_start); - WRITE_WORD(p, initrd_size); - } - if (info->kernel_cmdline && *info->kernel_cmdline) { - /* ATAG_CMDLINE */ - int cmdline_size; - - cmdline_size = strlen(info->kernel_cmdline); - cpu_physical_memory_write(p + 8, (void *)info->kernel_cmdline, - cmdline_size + 1); - cmdline_size = (cmdline_size >> 2) + 1; - WRITE_WORD(p, cmdline_size + 2); - WRITE_WORD(p, 0x54410009); - p += cmdline_size * 4; - } - if (info->atag_board) { - /* ATAG_BOARD */ - int atag_board_len; - uint8_t atag_board_buf[0x1000]; - - atag_board_len = (info->atag_board(info, atag_board_buf) + 3) & ~3; - WRITE_WORD(p, (atag_board_len + 8) >> 2); - WRITE_WORD(p, 0x414f4d50); - cpu_physical_memory_write(p, atag_board_buf, atag_board_len); - p += atag_board_len; - } - /* ATAG_END */ - WRITE_WORD(p, 0); - WRITE_WORD(p, 0); -} - -static void set_kernel_args_old(const struct arm_boot_info *info) -{ - hwaddr p; - const char *s; - int initrd_size = info->initrd_size; - hwaddr base = info->loader_start; - - /* see linux/include/asm-arm/setup.h */ - p = base + KERNEL_ARGS_ADDR; - /* page_size */ - WRITE_WORD(p, 4096); - /* nr_pages */ - WRITE_WORD(p, info->ram_size / 4096); - /* ramdisk_size */ - WRITE_WORD(p, 0); -#define FLAG_READONLY 1 -#define FLAG_RDLOAD 4 -#define FLAG_RDPROMPT 8 - /* flags */ - WRITE_WORD(p, FLAG_READONLY | FLAG_RDLOAD | FLAG_RDPROMPT); - /* rootdev */ - WRITE_WORD(p, (31 << 8) | 0); /* /dev/mtdblock0 */ - /* video_num_cols */ - WRITE_WORD(p, 0); - /* video_num_rows */ - WRITE_WORD(p, 0); - /* video_x */ - WRITE_WORD(p, 0); - /* video_y */ - WRITE_WORD(p, 0); - /* memc_control_reg */ - WRITE_WORD(p, 0); - /* unsigned char sounddefault */ - /* unsigned char adfsdrives */ - /* unsigned char bytes_per_char_h */ - /* unsigned char bytes_per_char_v */ - WRITE_WORD(p, 0); - /* pages_in_bank[4] */ - WRITE_WORD(p, 0); - WRITE_WORD(p, 0); - WRITE_WORD(p, 0); - WRITE_WORD(p, 0); - /* pages_in_vram */ - WRITE_WORD(p, 0); - /* initrd_start */ - if (initrd_size) { - WRITE_WORD(p, info->initrd_start); - } else { - WRITE_WORD(p, 0); - } - /* initrd_size */ - WRITE_WORD(p, initrd_size); - /* rd_start */ - WRITE_WORD(p, 0); - /* system_rev */ - WRITE_WORD(p, 0); - /* system_serial_low */ - WRITE_WORD(p, 0); - /* system_serial_high */ - WRITE_WORD(p, 0); - /* mem_fclk_21285 */ - WRITE_WORD(p, 0); - /* zero unused fields */ - while (p < base + KERNEL_ARGS_ADDR + 256 + 1024) { - WRITE_WORD(p, 0); - } - s = info->kernel_cmdline; - if (s) { - cpu_physical_memory_write(p, (void *)s, strlen(s) + 1); - } else { - WRITE_WORD(p, 0); - } -} - -static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo) -{ -#ifdef CONFIG_FDT - uint32_t *mem_reg_property; - uint32_t mem_reg_propsize; - void *fdt = NULL; - char *filename; - int size, rc; - uint32_t acells, scells, hival; - - filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, binfo->dtb_filename); - if (!filename) { - fprintf(stderr, "Couldn't open dtb file %s\n", binfo->dtb_filename); - return -1; - } - - fdt = load_device_tree(filename, &size); - if (!fdt) { - fprintf(stderr, "Couldn't open dtb file %s\n", filename); - g_free(filename); - return -1; - } - g_free(filename); - - acells = qemu_devtree_getprop_cell(fdt, "/", "#address-cells"); - scells = qemu_devtree_getprop_cell(fdt, "/", "#size-cells"); - if (acells == 0 || scells == 0) { - fprintf(stderr, "dtb file invalid (#address-cells or #size-cells 0)\n"); - return -1; - } - - mem_reg_propsize = acells + scells; - mem_reg_property = g_new0(uint32_t, mem_reg_propsize); - mem_reg_property[acells - 1] = cpu_to_be32(binfo->loader_start); - hival = cpu_to_be32(binfo->loader_start >> 32); - if (acells > 1) { - mem_reg_property[acells - 2] = hival; - } else if (hival != 0) { - fprintf(stderr, "qemu: dtb file not compatible with " - "RAM start address > 4GB\n"); - exit(1); - } - mem_reg_property[acells + scells - 1] = cpu_to_be32(binfo->ram_size); - hival = cpu_to_be32(binfo->ram_size >> 32); - if (scells > 1) { - mem_reg_property[acells + scells - 2] = hival; - } else if (hival != 0) { - fprintf(stderr, "qemu: dtb file not compatible with " - "RAM size > 4GB\n"); - exit(1); - } - - rc = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property, - mem_reg_propsize * sizeof(uint32_t)); - if (rc < 0) { - fprintf(stderr, "couldn't set /memory/reg\n"); - } - - if (binfo->kernel_cmdline && *binfo->kernel_cmdline) { - rc = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", - binfo->kernel_cmdline); - if (rc < 0) { - fprintf(stderr, "couldn't set /chosen/bootargs\n"); - } - } - - if (binfo->initrd_size) { - rc = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start", - binfo->initrd_start); - if (rc < 0) { - fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n"); - } - - rc = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end", - binfo->initrd_start + binfo->initrd_size); - if (rc < 0) { - fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n"); - } - } - - cpu_physical_memory_write(addr, fdt, size); - - return 0; - -#else - fprintf(stderr, "Device tree requested, " - "but qemu was compiled without fdt support\n"); - return -1; -#endif -} - -static void do_cpu_reset(void *opaque) -{ - ARMCPU *cpu = opaque; - CPUARMState *env = &cpu->env; - const struct arm_boot_info *info = env->boot_info; - - cpu_reset(CPU(cpu)); - if (info) { - if (!info->is_linux) { - /* Jump to the entry point. */ - env->regs[15] = info->entry & 0xfffffffe; - env->thumb = info->entry & 1; - } else { - if (env == first_cpu) { - env->regs[15] = info->loader_start; - if (!info->dtb_filename) { - if (old_param) { - set_kernel_args_old(info); - } else { - set_kernel_args(info); - } - } - } else { - info->secondary_cpu_reset_hook(cpu, info); - } - } - } -} - -void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info) -{ - CPUARMState *env = &cpu->env; - int kernel_size; - int initrd_size; - int n; - int is_linux = 0; - uint64_t elf_entry; - hwaddr entry; - int big_endian; - QemuOpts *machine_opts; - - /* Load the kernel. */ - if (!info->kernel_filename) { - fprintf(stderr, "Kernel image must be specified\n"); - exit(1); - } - - machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0); - if (machine_opts) { - info->dtb_filename = qemu_opt_get(machine_opts, "dtb"); - } else { - info->dtb_filename = NULL; - } - - if (!info->secondary_cpu_reset_hook) { - info->secondary_cpu_reset_hook = default_reset_secondary; - } - if (!info->write_secondary_boot) { - info->write_secondary_boot = default_write_secondary; - } - - if (info->nb_cpus == 0) - info->nb_cpus = 1; - -#ifdef TARGET_WORDS_BIGENDIAN - big_endian = 1; -#else - big_endian = 0; -#endif - - /* We want to put the initrd far enough into RAM that when the - * kernel is uncompressed it will not clobber the initrd. However - * on boards without much RAM we must ensure that we still leave - * enough room for a decent sized initrd, and on boards with large - * amounts of RAM we must avoid the initrd being so far up in RAM - * that it is outside lowmem and inaccessible to the kernel. - * So for boards with less than 256MB of RAM we put the initrd - * halfway into RAM, and for boards with 256MB of RAM or more we put - * the initrd at 128MB. - */ - info->initrd_start = info->loader_start + - MIN(info->ram_size / 2, 128 * 1024 * 1024); - - /* Assume that raw images are linux kernels, and ELF images are not. */ - kernel_size = load_elf(info->kernel_filename, NULL, NULL, &elf_entry, - NULL, NULL, big_endian, ELF_MACHINE, 1); - entry = elf_entry; - if (kernel_size < 0) { - kernel_size = load_uimage(info->kernel_filename, &entry, NULL, - &is_linux); - } - if (kernel_size < 0) { - entry = info->loader_start + KERNEL_LOAD_ADDR; - kernel_size = load_image_targphys(info->kernel_filename, entry, - info->ram_size - KERNEL_LOAD_ADDR); - is_linux = 1; - } - if (kernel_size < 0) { - fprintf(stderr, "qemu: could not load kernel '%s'\n", - info->kernel_filename); - exit(1); - } - info->entry = entry; - if (is_linux) { - if (info->initrd_filename) { - initrd_size = load_image_targphys(info->initrd_filename, - info->initrd_start, - info->ram_size - - info->initrd_start); - if (initrd_size < 0) { - fprintf(stderr, "qemu: could not load initrd '%s'\n", - info->initrd_filename); - exit(1); - } - } else { - initrd_size = 0; - } - info->initrd_size = initrd_size; - - bootloader[4] = info->board_id; - - /* for device tree boot, we pass the DTB directly in r2. Otherwise - * we point to the kernel args. - */ - if (info->dtb_filename) { - /* Place the DTB after the initrd in memory. Note that some - * kernels will trash anything in the 4K page the initrd - * ends in, so make sure the DTB isn't caught up in that. - */ - hwaddr dtb_start = QEMU_ALIGN_UP(info->initrd_start + initrd_size, - 4096); - if (load_dtb(dtb_start, info)) { - exit(1); - } - bootloader[5] = dtb_start; - } else { - bootloader[5] = info->loader_start + KERNEL_ARGS_ADDR; - if (info->ram_size >= (1ULL << 32)) { - fprintf(stderr, "qemu: RAM size must be less than 4GB to boot" - " Linux kernel using ATAGS (try passing a device tree" - " using -dtb)\n"); - exit(1); - } - } - bootloader[6] = entry; - for (n = 0; n < sizeof(bootloader) / 4; n++) { - bootloader[n] = tswap32(bootloader[n]); - } - rom_add_blob_fixed("bootloader", bootloader, sizeof(bootloader), - info->loader_start); - if (info->nb_cpus > 1) { - info->write_secondary_boot(cpu, info); - } - } - info->is_linux = is_linux; - - for (; env; env = env->next_cpu) { - cpu = arm_env_get_cpu(env); - env->boot_info = info; - qemu_register_reset(do_cpu_reset, cpu); - } -} |