spl: zImage support in Falcon mode

Other payload than uImage is currently considered to be raw U-Boot
image. Check also for zImage in Falcon mode.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Reviewed-by: Heiko Schocher <hs@denx.de>

arch/arm/lib/Makefile

@@ -27,11 +27,13 @@ endif
 obj-$(CONFIG_CPU_V7M) += cmd_boot.o
 obj-$(CONFIG_OF_LIBFDT) += bootm-fdt.o
 obj-$(CONFIG_CMD_BOOTM) += bootm.o
+obj-$(CONFIG_CMD_BOOTM) += zimage.o
 obj-$(CONFIG_SYS_L2_PL310) += cache-pl310.o
 obj-$(CONFIG_USE_ARCH_MEMSET) += memset.o
 obj-$(CONFIG_USE_ARCH_MEMCPY) += memcpy.o
 else
 obj-$(CONFIG_SPL_FRAMEWORK) += spl.o
+obj-$(CONFIG_SPL_FRAMEWORK) += zimage.o
 endif
 obj-$(CONFIG_SEMIHOSTING) += semihosting.o
 

arch/arm/lib/bootm.c

@@ -358,38 +358,6 @@ int do_bootm_linux(int flag, int argc, char * const argv[],
 	return 0;
 }
 
-#ifdef CONFIG_CMD_BOOTZ
-
-struct zimage_header {
-	uint32_t	code[9];
-	uint32_t	zi_magic;
-	uint32_t	zi_start;
-	uint32_t	zi_end;
-};
-
-#define	LINUX_ARM_ZIMAGE_MAGIC	0x016f2818
-
-int bootz_setup(ulong image, ulong *start, ulong *end)
-{
-	struct zimage_header *zi;
-
-	zi = (struct zimage_header *)map_sysmem(image, 0);
-	if (zi->zi_magic != LINUX_ARM_ZIMAGE_MAGIC) {
-		puts("Bad Linux ARM zImage magic!\n");
-		return 1;
-	}
-
-	*start = zi->zi_start;
-	*end = zi->zi_end;
-
-	printf("Kernel image @ %#08lx [ %#08lx - %#08lx ]\n", image, *start,
-	      *end);
-
-	return 0;
-}
-
-#endif	/* CONFIG_CMD_BOOTZ */
-
 #if defined(CONFIG_BOOTM_VXWORKS)
 void boot_prep_vxworks(bootm_headers_t *images)
 {

arch/arm/lib/zimage.c

+/*
+ * Copyright (C) 2016
+ * Ladislav Michl <ladis@linux-mips.org>
+ *
+ * bootz code:
+ * Copyright (C) 2012 Marek Vasut <marek.vasut@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+
+#define	LINUX_ARM_ZIMAGE_MAGIC	0x016f2818
+
+struct arm_z_header {
+	uint32_t	code[9];
+	uint32_t	zi_magic;
+	uint32_t	zi_start;
+	uint32_t	zi_end;
+} __attribute__ ((__packed__));
+
+int bootz_setup(ulong image, ulong *start, ulong *end)
+{
+	struct arm_z_header *zi = (struct arm_z_header *)image;
+
+	if (zi->zi_magic != LINUX_ARM_ZIMAGE_MAGIC) {
+#ifndef CONFIG_SPL_FRAMEWORK
+		puts("Bad Linux ARM zImage magic!\n");
+#endif
+		return 1;
+	}
+
+	*start = zi->zi_start;
+	*end = zi->zi_end;
+#ifndef CONFIG_SPL_FRAMEWORK
+	printf("Kernel image @ %#08lx [ %#08lx - %#08lx ]\n",
+	       image, *start, *end);
+#endif
+
+	return 0;
+}

common/spl/spl.c

@@ -56,6 +56,15 @@ __weak int spl_start_uboot(void)
 	puts("SPL: Direct Linux boot not active!\n");
 	return 1;
 }
+
+/*
+ * Weak default function for arch specific zImage check. Return zero
+ * and fill start and end address if image is recognized.
+ */
+int __weak bootz_setup(ulong image, ulong *start, ulong *end)
+{
+	 return 1;
+}
 #endif
 
 /*
@@ -124,6 +133,20 @@ int spl_parse_image_header(const struct image_header *header)
 		/* Signature not found, proceed to other boot methods. */
 		return -EINVAL;
 #else
+#ifdef CONFIG_SPL_OS_BOOT
+		ulong start, end;
+
+		if (!bootz_setup((ulong)header, &start, &end)) {
+			spl_image.name = "Linux";
+			spl_image.os = IH_OS_LINUX;
+			spl_image.load_addr = CONFIG_SYS_LOAD_ADDR;
+			spl_image.entry_point = CONFIG_SYS_LOAD_ADDR;
+			spl_image.size = end - start;
+			debug("spl: payload zImage, load addr: 0x%x size: %d\n",
+			      spl_image.load_addr, spl_image.size);
+			return 0;
+		}
+#endif
 		/* Signature not found - assume u-boot.bin */
 		debug("mkimage signature not found - ih_magic = %x\n",
 			header->ih_magic);