Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / sh / lib / bootm.c

diff --git a/qemu/roms/u-boot/arch/sh/lib/bootm.c b/qemu/roms/u-boot/arch/sh/lib/bootm.c
new file mode 100644 (file)
index 0000000..8a0010b
--- /dev/null
+++ b/qemu/roms/u-boot/arch/sh/lib/bootm.c
@@ -0,0 +1,111 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (c) Copyright 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
+ * (c) Copyright 2008 Renesas Solutions Corp.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/byteorder.h>
+#include <asm/zimage.h>
+
+#ifdef CONFIG_SYS_DEBUG
+static void hexdump(unsigned char *buf, int len)
+{
+       int i;
+
+       for (i = 0; i < len; i++) {
+               if ((i % 16) == 0)
+                       printf("%s%08x: ", i ? "\n" : "",
+                                                       (unsigned int)&buf[i]);
+               printf("%02x ", buf[i]);
+       }
+       printf("\n");
+}
+#endif
+
+#ifdef CONFIG_SH_SDRAM_OFFSET
+#define GET_INITRD_START(initrd, linux) (initrd - linux + CONFIG_SH_SDRAM_OFFSET)
+#else
+#define GET_INITRD_START(initrd, linux) (initrd - linux)
+#endif
+
+static void set_sh_linux_param(unsigned long param_addr, unsigned long data)
+{
+       *(unsigned long *)(param_addr) = data;
+}
+
+static unsigned long sh_check_cmd_arg(char *cmdline, char *key, int base)
+{
+       unsigned long val = 0;
+       char *p = strstr(cmdline, key);
+       if (p) {
+               p += strlen(key);
+               val = simple_strtol(p, NULL, base);
+       }
+       return val;
+}
+
+int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *images)
+{
+       /* Linux kernel load address */
+       void (*kernel) (void) = (void (*)(void))images->ep;
+       /* empty_zero_page */
+       unsigned char *param
+               = (unsigned char *)image_get_load(images->legacy_hdr_os);
+       /* Linux kernel command line */
+       char *cmdline = (char *)param + COMMAND_LINE;
+       /* PAGE_SIZE */
+       unsigned long size = images->ep - (unsigned long)param;
+       char *bootargs = getenv("bootargs");
+
+       /*
+        * allow the PREP bootm subcommand, it is required for bootm to work
+        */
+       if (flag & BOOTM_STATE_OS_PREP)
+               return 0;
+
+       if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
+               return 1;
+
+       /* Clear zero page */
+       memset(param, 0, size);
+
+       /* Set commandline */
+       strcpy(cmdline, bootargs);
+
+       /* Initrd */
+       if (images->rd_start || images->rd_end) {
+               unsigned long ramdisk_flags = 0;
+               int val = sh_check_cmd_arg(bootargs, CMD_ARG_RD_PROMPT, 10);
+               if (val == 1)
+                               ramdisk_flags |= RD_PROMPT;
+               else
+                               ramdisk_flags &= ~RD_PROMPT;
+
+               val = sh_check_cmd_arg(bootargs, CMD_ARG_RD_DOLOAD, 10);
+               if (val == 1)
+                               ramdisk_flags |= RD_DOLOAD;
+               else
+                               ramdisk_flags &= ~RD_DOLOAD;
+
+               set_sh_linux_param((unsigned long)param + MOUNT_ROOT_RDONLY, 0x0001);
+               set_sh_linux_param((unsigned long)param + RAMDISK_FLAGS, ramdisk_flags);
+               set_sh_linux_param((unsigned long)param + ORIG_ROOT_DEV, 0x0200);
+               set_sh_linux_param((unsigned long)param + LOADER_TYPE, 0x0001);
+               set_sh_linux_param((unsigned long)param + INITRD_START,
+                       GET_INITRD_START(images->rd_start, CONFIG_SYS_SDRAM_BASE));
+               set_sh_linux_param((unsigned long)param + INITRD_SIZE,
+                       images->rd_end - images->rd_start);
+       }
+
+       /* Boot kernel */
+       kernel();
+
+       /* does not return */
+       return 1;
+}