diff options
Diffstat (limited to 'hw/arm_boot.c')
| -rw-r--r-- | hw/arm_boot.c | 46 |
1 files changed, 41 insertions, 5 deletions
diff --git a/hw/arm_boot.c b/hw/arm_boot.c index a1e6ddbc1c..a6e9143662 100644 --- a/hw/arm_boot.c +++ b/hw/arm_boot.c @@ -216,11 +216,12 @@ static void set_kernel_args_old(const struct arm_boot_info *info) static int load_dtb(target_phys_addr_t addr, const struct arm_boot_info *binfo) { #ifdef CONFIG_FDT - uint32_t mem_reg_property[] = { cpu_to_be32(binfo->loader_start), - cpu_to_be32(binfo->ram_size) }; + 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) { @@ -236,8 +237,36 @@ static int load_dtb(target_phys_addr_t addr, const struct arm_boot_info *binfo) } 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, - sizeof(mem_reg_property)); + mem_reg_propsize * sizeof(uint32_t)); if (rc < 0) { fprintf(stderr, "couldn't set /memory/reg\n"); } @@ -357,7 +386,7 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info) if (kernel_size < 0) { entry = info->loader_start + KERNEL_LOAD_ADDR; kernel_size = load_image_targphys(info->kernel_filename, entry, - ram_size - KERNEL_LOAD_ADDR); + info->ram_size - KERNEL_LOAD_ADDR); is_linux = 1; } if (kernel_size < 0) { @@ -371,7 +400,8 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info) initrd_size = load_image_targphys(info->initrd_filename, info->loader_start + INITRD_LOAD_ADDR, - ram_size - INITRD_LOAD_ADDR); + info->ram_size + - INITRD_LOAD_ADDR); if (initrd_size < 0) { fprintf(stderr, "qemu: could not load initrd '%s'\n", info->initrd_filename); @@ -398,6 +428,12 @@ void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info) 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++) { |