diff options
| -rw-r--r-- | hw/loongarch/boot.c | 52 |
1 files changed, 43 insertions, 9 deletions
diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c index 0324d6adcb..9b6292eaa1 100644 --- a/hw/loongarch/boot.c +++ b/hw/loongarch/boot.c @@ -235,6 +235,45 @@ static int64_t load_loongarch_linux_image(const char *filename, return size; } +static ram_addr_t alloc_initrd_memory(struct loongarch_boot_info *info, + uint64_t advice_start, ssize_t rd_size) +{ + hwaddr base, ram_size, gap, low_end; + ram_addr_t initrd_end, initrd_start; + + base = VIRT_LOWMEM_BASE; + gap = VIRT_LOWMEM_SIZE; + initrd_start = advice_start; + initrd_end = initrd_start + rd_size; + + ram_size = info->ram_size; + low_end = base + MIN(ram_size, gap); + if (initrd_end <= low_end) { + return initrd_start; + } + + if (ram_size <= gap) { + error_report("The low memory too small for initial ram disk '%s'," + "You need to expand the ram", + info->initrd_filename); + exit(1); + } + + /* + * Try to load initrd in the high memory + */ + ram_size -= gap; + initrd_start = VIRT_HIGHMEM_BASE; + if (rd_size <= ram_size) { + return initrd_start; + } + + error_report("The high memory too small for initial ram disk '%s'," + "You need to expand the ram", + info->initrd_filename); + exit(1); +} + static int64_t load_kernel_info(struct loongarch_boot_info *info) { uint64_t kernel_entry, kernel_low, kernel_high; @@ -263,15 +302,10 @@ static int64_t load_kernel_info(struct loongarch_boot_info *info) initrd_size = get_image_size(info->initrd_filename); if (initrd_size > 0) { initrd_offset = ROUND_UP(kernel_high + 4 * kernel_size, 64 * KiB); - - if (initrd_offset + initrd_size > info->ram_size) { - error_report("memory too small for initial ram disk '%s'", - info->initrd_filename); - exit(1); - } - - initrd_size = load_image_targphys(info->initrd_filename, initrd_offset, - info->ram_size - initrd_offset); + initrd_offset = alloc_initrd_memory(info, initrd_offset, + initrd_size); + initrd_size = load_image_targphys(info->initrd_filename, + initrd_offset, initrd_size); } if (initrd_size == (target_ulong)-1) { |