tools: dynamically allocate imx_header in imximage

Change to dynamically allocate the imx_header to correctly
allocate the IVT, Boot Data and DCD at correct locations
depending on the boot media.

Also check that the Image Vector Table Offset + IVT +
Boot Data + DCD <= Initial Load Region Size.

Previously struct imx_header was always 4096 bytes and was
not dealing correctly with the Image Vector Table Offset.

Now, the memory allocation looks for e.g. SD boot like this

 Storage   u-boot.imx                             RAM
 Device

 00000000                                         177ff000 <--------------
                                                                         |
 00000400  00000000  d1 00 20 40 IVT.header       177ff400 <-------      |
 00000404  00000004  00 00 80 17 IVT.entry        177ff404 -----------   |
 00000408  00000008  00 00 00 00 IVT.reserved1    177ff408        |  |   |
 0000040C  0000000C  2c f4 7f 17 IVT.dcd          177ff40C ------ |  |   |
 00000410  00000010  20 f4 7f 17 IVT.boot         177ff410 ---- | |  |   |
 00000414  00000014  00 f4 7f 17 IVT.self         177ff414 --------  |   |
 00000418  00000018  00 00 00 00 IVT.csf          177ff418    | |    |   |
 0000041C  0000001C  00 00 00 00 IVT.reserved2    177ff41C    | |    |   |
 00000420  00000020  00 f0 7f 17 BootData.start   177ff420 <--- |    | ---
 00000424  00000024  00 60 03 00 BootData.length  177ff424      |    |
 00000428  00000028  00 00 00 00 BootData.plugin  177ff428      |    |
 0000042C  0000002C  d2 03 30 40 DCD.header       177ff42C <-----    |
 ...                                                                 |
 00001000  00000c00  13 00 00 ea U-Boot Start     17800000 <----------

While at it also remove the unused #define HEADER_OFFSET.

Signed-off-by: Stefano Babic <sbabic@denx.de>

2 files changed, 49 insertions, 10 deletions

diff --git a/tools/imximage.c b/tools/imximage.c
index 494446e..2b4909e 100644
--- a/tools/imximage.c
+++ b/tools/imximage.c
@@ -31,7 +31,7 @@ static table_entry_t imximage_cmds[] = {
  * Supported Boot options for configuration file
  * this is needed to set the correct flash offset
  */
-static table_entry_t imximage_bootops[] = {
+static table_entry_t imximage_boot_offset[] = {
 	{FLASH_OFFSET_ONENAND,	"onenand",	"OneNAND Flash",},
 	{FLASH_OFFSET_NAND,	"nand",		"NAND Flash",	},
 	{FLASH_OFFSET_NOR,	"nor",		"NOR Flash",	},
@@ -42,6 +42,20 @@ static table_entry_t imximage_bootops[] = {
 };
 
 /*
+ * Supported Boot options for configuration file
+ * this is needed to determine the initial load size
+ */
+static table_entry_t imximage_boot_loadsize[] = {
+	{FLASH_LOADSIZE_ONENAND,	"onenand",	"OneNAND Flash",},
+	{FLASH_LOADSIZE_NAND,		"nand",		"NAND Flash",	},
+	{FLASH_LOADSIZE_NOR,		"nor",		"NOR Flash",	},
+	{FLASH_LOADSIZE_SATA,		"sata",		"SATA Disk",	},
+	{FLASH_LOADSIZE_SD,		"sd",		"SD Card",	},
+	{FLASH_LOADSIZE_SPI,		"spi",		"SPI Flash",	},
+	{-1,				"",		"Invalid",	},
+};
+
+/*
  * IMXIMAGE version definition for i.MX chips
  */
 static table_entry_t imximage_versions[] = {
@@ -54,6 +68,8 @@ static struct imx_header imximage_header;
 static uint32_t imximage_version;
 /* Image Vector Table Offset */
 static uint32_t imximage_ivt_offset;
+/* Initial Load Region Size */
+static uint32_t imximage_init_loadsize;
 
 static set_dcd_val_t set_dcd_val;
 static set_dcd_rst_t set_dcd_rst;
@@ -195,7 +211,8 @@ static void set_imx_hdr_v1(struct imx_header *imxhdr, uint32_t dcd_len,
 	/* Set magic number */
 	fhdr_v1->app_code_barker = APP_CODE_BARKER;
 
-	hdr_base = entry_point - sizeof(struct imx_header);
+	/* TODO: check i.MX image V1 handling, for now use 'old' style */
+	hdr_base = entry_point - 4096;
 	fhdr_v1->app_dest_ptr = hdr_base - flash_offset;
 	fhdr_v1->app_code_jump_vector = entry_point;
 
@@ -222,12 +239,13 @@ static void set_imx_hdr_v2(struct imx_header *imxhdr, uint32_t dcd_len,
 
 	fhdr_v2->entry = entry_point;
 	fhdr_v2->reserved1 = fhdr_v2->reserved2 = 0;
-	fhdr_v2->self = hdr_base = entry_point - sizeof(struct imx_header);
-
+	hdr_base = entry_point - imximage_init_loadsize +
+		flash_offset;
+	fhdr_v2->self = hdr_base;
 	fhdr_v2->dcd_ptr = hdr_base + offsetof(imx_header_v2_t, dcd_table);
 	fhdr_v2->boot_data_ptr = hdr_base
 			+ offsetof(imx_header_v2_t, boot_data);
-	hdr_v2->boot_data.start = hdr_base - flash_offset;
+	hdr_v2->boot_data.start = entry_point - imximage_init_loadsize;
 
 	/* Security feature are not supported */
 	fhdr_v2->csf = 0;
@@ -329,13 +347,24 @@ static void parse_cfg_cmd(struct imx_header *imxhdr, int32_t cmd, char *token,
 		set_hdr_func(imxhdr);
 		break;
 	case CMD_BOOT_FROM:
-		imximage_ivt_offset = get_table_entry_id(imximage_bootops,
+		imximage_ivt_offset = get_table_entry_id(imximage_boot_offset,
 					"imximage boot option", token);
 		if (imximage_ivt_offset == -1) {
 			fprintf(stderr, "Error: %s[%d] -Invalid boot device"
 				"(%s)\n", name, lineno, token);
 			exit(EXIT_FAILURE);
 		}
+
+		imximage_init_loadsize =
+			get_table_entry_id(imximage_boot_loadsize,
+					   "imximage boot option", token);
+
+		if (imximage_init_loadsize == -1) {
+			fprintf(stderr,
+				"Error: %s[%d] -Invalid boot device(%s)\n",
+				name, lineno, token);
+			exit(EXIT_FAILURE);
+		}
 		if (unlikely(cmd_ver_first != 1))
 			cmd_ver_first = 0;
 		break;
@@ -517,7 +546,7 @@ static void imximage_set_header(void *ptr, struct stat *sbuf, int ifd,
 	 *
 	 * The remaining fraction of a block bytes would not be loaded!
 	 */
-	*header_size_ptr = ROUND(sbuf->st_size + imximage_ivt_offset, 4096);
+	*header_size_ptr = ROUND(sbuf->st_size, 4096);
 }
 
 int imximage_check_params(struct mkimage_params *params)
diff --git a/tools/imximage.h b/tools/imximage.h
index ec629a5..bb04a43 100644
--- a/tools/imximage.h
+++ b/tools/imximage.h
@@ -13,14 +13,14 @@
 #define APP_CODE_BARKER	0xB1
 #define DCD_BARKER	0xB17219E9
 
-#define HEADER_OFFSET	0x400
-
 /*
  * NOTE: This file must be kept in sync with arch/arm/include/asm/\
  *       imx-common/imximage.cfg because tools/imximage.c can not
  *       cross-include headers from arch/arm/ and vice-versa.
  */
 #define CMD_DATA_STR	"DATA"
+
+/* Initial Vector Table Offset */
 #define FLASH_OFFSET_UNDEFINED	0xFFFFFFFF
 #define FLASH_OFFSET_STANDARD	0x400
 #define FLASH_OFFSET_NAND	FLASH_OFFSET_STANDARD
@@ -30,6 +30,16 @@
 #define FLASH_OFFSET_NOR	0x1000
 #define FLASH_OFFSET_SATA	FLASH_OFFSET_STANDARD
 
+/* Initial Load Region Size */
+#define FLASH_LOADSIZE_UNDEFINED	0xFFFFFFFF
+#define FLASH_LOADSIZE_STANDARD		0x1000
+#define FLASH_LOADSIZE_NAND		FLASH_LOADSIZE_STANDARD
+#define FLASH_LOADSIZE_SD		FLASH_LOADSIZE_STANDARD
+#define FLASH_LOADSIZE_SPI		FLASH_LOADSIZE_STANDARD
+#define FLASH_LOADSIZE_ONENAND		0x400
+#define FLASH_LOADSIZE_NOR		0x0 /* entire image */
+#define FLASH_LOADSIZE_SATA		FLASH_LOADSIZE_STANDARD
+
 #define IVT_HEADER_TAG 0xD1
 #define IVT_VERSION 0x40
 #define DCD_HEADER_TAG 0xD2
@@ -147,7 +157,7 @@ struct imx_header {
 		imx_header_v1_t hdr_v1;
 		imx_header_v2_t hdr_v2;
 	} header;
-} __attribute__((aligned(4096)));
+};
 
 typedef void (*set_dcd_val_t)(struct imx_header *imxhdr,
 					char *name, int lineno,