diff mbox series

[PULL,v2,02/17] hw/loongarch: Add load initrd

Message ID 20240429023043.2607982-3-gaosong@loongson.cn (mailing list archive)
State New, archived
Headers show
Series [PULL,v2,01/17] hw/loongarch: Move boot functions to boot.c | expand

Commit Message

gaosong April 29, 2024, 2:30 a.m. UTC
we load initrd ramdisk after kernel_high address

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Message-Id: <20240426091551.2397867-3-gaosong@loongson.cn>
---
 hw/loongarch/boot.c | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c
index 9feed17db3..a5135fe542 100644
--- a/hw/loongarch/boot.c
+++ b/hw/loongarch/boot.c
@@ -22,7 +22,8 @@  static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr)
 
 static int64_t load_kernel_info(struct loongarch_boot_info *info)
 {
-    uint64_t kernel_entry, kernel_low, kernel_high;
+    uint64_t kernel_entry, kernel_low, kernel_high, initrd_size;
+    ram_addr_t initrd_offset;
     ssize_t kernel_size;
 
     kernel_size = load_elf(info->kernel_filename, NULL,
@@ -37,6 +38,31 @@  static int64_t load_kernel_info(struct loongarch_boot_info *info)
                      load_elf_strerror(kernel_size));
         exit(1);
     }
+
+    if (info->initrd_filename) {
+        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);
+        }
+
+        if (initrd_size == (target_ulong)-1) {
+            error_report("could not load initial ram disk '%s'",
+                         info->initrd_filename);
+            exit(1);
+        }
+    } else {
+        initrd_size = 0;
+    }
+
     return kernel_entry;
 }