[U-Boot] [PATCH 2/6] sandbox: Add support for bootz

[Sjoerd Simons]

Add dummy bootz_setup implementation allowing the u-boot sandbox to run
bootz. This recognizes both ARM and x86 zImages to validate a valid
zImage was loaded.

Signed-off-by: Sjoerd Simons <sjoerd.simons at collabora.co.uk>
---
 arch/sandbox/cpu/cpu.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c
index 1aa397c..c71fb86 100644
--- a/arch/sandbox/cpu/cpu.c
+++ b/arch/sandbox/cpu/cpu.c
@@ -7,6 +7,7 @@
 #include <dm/root.h>
 #include <os.h>
 #include <asm/state.h>
+#include <asm/io.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -40,6 +41,25 @@ unsigned long __attribute__((no_instrument_function)) timer_get_us(void)
 	return os_get_nsec() / 1000;
 }
 
+int bootz_setup(ulong image, ulong *start, ulong *end)
+{
+  uint8_t *zimage = (uint8_t *)map_sysmem(image, 0);
+  uint8_t arm_magic[] = { 0x18, 0x28, 0x6f, 0x01 };
+
+  if (memcmp(zimage + 0x202, "HdrS", 4) == 0) {
+    printf ("setting up x86 zImage\n");
+  } else if (memcmp (zimage + 0x24, arm_magic, 4) == 0) {
+    printf ("setting up ARM zImage\n");
+  } else {
+    printf ("Unrecognized zImage\n");
+    return 1;
+  }
+
+  *start = 0xdead;
+  *end = 0xbeef;
+  return 0;
+}
+
 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
 {
 	if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
-- 
2.1.4