mkimage: Add Kirkwood Boot Image support (kwbimage)

This patch adds support for "kwbimage" (Kirkwood Boot Image)
image types to the mkimage code.

For details refer to docs/README.kwbimage

This patch is tested with Sheevaplug board

Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
Acked-by: Ron Lee <ron@debian.org>

Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>

1 files changed, 405 insertions, 0 deletions

diff --git a/tools/kwbimage.c b/tools/kwbimage.c
new file mode 100644
index 0000000..28dc2d6
--- /dev/null
+++ b/tools/kwbimage.c
@@ -0,0 +1,405 @@
+/*
+ * (C) Copyright 2008
+ * Marvell Semiconductor <www.marvell.com>
+ * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* Required to obtain the getline prototype from stdio.h */
+#define _GNU_SOURCE
+
+#include "mkimage.h"
+#include <image.h>
+#include "kwbimage.h"
+
+/*
+ * Supported commands for configuration file
+ */
+static table_entry_t kwbimage_cmds[] = {
+	{CMD_BOOT_FROM,		"BOOT_FROM",		"boot comand",	},
+	{CMD_NAND_ECC_MODE,	"NAND_ECC_MODE",	"NAND mode",	},
+	{CMD_NAND_PAGE_SIZE,	"NAND_PAGE_SIZE",	"NAND size",	},
+	{CMD_SATA_PIO_MODE,	"SATA_PIO_MODE",	"SATA mode",	},
+	{CMD_DDR_INIT_DELAY,	"DDR_INIT_DELAY",	"DDR init dly",	},
+	{CMD_DATA,		"DATA",			"Reg Write Data", },
+	{CMD_INVALID,		"",			"",	},
+};
+
+/*
+ * Supported Boot options for configuration file
+ */
+static table_entry_t kwbimage_bootops[] = {
+	{IBR_HDR_SPI_ID,	"spi",		"SPI Flash",	},
+	{IBR_HDR_NAND_ID,	"nand",		"NAND Flash",	},
+	{IBR_HDR_SATA_ID,	"sata",		"Sata port",	},
+	{IBR_HDR_PEX_ID,	"pex",		"PCIe port",	},
+	{IBR_HDR_UART_ID,	"uart",		"Serial port",	},
+	{-1,			"",		"Invalid",	},
+};
+
+/*
+ * Supported NAND ecc options configuration file
+ */
+static table_entry_t kwbimage_eccmodes[] = {
+	{IBR_HDR_ECC_DEFAULT,		"default",	"Default mode",	},
+	{IBR_HDR_ECC_FORCED_HAMMING,	"hamming",	"Hamming mode",	},
+	{IBR_HDR_ECC_FORCED_RS,		"rs",		"RS mode",	},
+	{IBR_HDR_ECC_DISABLED,		"disabled",	"ECC Disabled",	},
+	{-1,				"",		"",	},
+};
+
+static struct kwb_header kwbimage_header;
+static int datacmd_cnt = 0;
+static char * fname = "Unknown";
+static int lineno = -1;
+
+/*
+ * Report Error if xflag is set in addition to default
+ */
+static int kwbimage_check_params (struct mkimage_params *params)
+{
+	if (!strlen (params->imagename)) {
+		printf ("Error:%s - Configuration file not specified, "
+			"it is needed for kwbimage generation\n",
+			params->cmdname);
+		return CFG_INVALID;
+	}
+	return	((params->dflag && (params->fflag || params->lflag)) ||
+		(params->fflag && (params->dflag || params->lflag)) ||
+		(params->lflag && (params->dflag || params->fflag)) ||
+		(params->xflag) || !(strlen (params->imagename)));
+}
+
+static uint32_t check_get_hexval (char *token)
+{
+	uint32_t hexval;
+
+	if (!sscanf (token, "%x", &hexval)) {
+		printf ("Error:%s[%d] - Invalid hex data(%s)\n", fname,
+			lineno, token);
+		exit (EXIT_FAILURE);
+	}
+	return hexval;
+}
+
+/*
+ * Generates 8 bit checksum
+ */
+static uint8_t kwbimage_checksum8 (void *start, uint32_t len, uint8_t csum)
+{
+	register uint8_t sum = csum;
+	volatile uint8_t *p = (volatile uint8_t *)start;
+
+	/* check len and return zero checksum if invalid */
+	if (!len)
+		return 0;
+
+	do {
+		sum += *p;
+		p++;
+	} while (--len);
+	return (sum);
+}
+
+/*
+ * Generates 32 bit checksum
+ */
+static uint32_t kwbimage_checksum32 (uint32_t *start, uint32_t len, uint32_t csum)
+{
+	register uint32_t sum = csum;
+	volatile uint32_t *p = start;
+
+	/* check len and return zero checksum if invalid */
+	if (!len)
+		return 0;
+
+	if (len % sizeof(uint32_t)) {
+		printf ("Error:%s[%d] - lenght is not in multiple of %d\n",
+			__FUNCTION__, len, sizeof(uint32_t));
+		return 0;
+	}
+
+	do {
+		sum += *p;
+		p++;
+		len -= sizeof(uint32_t);
+	} while (len > 0);
+	return (sum);
+}
+
+static void kwbimage_check_cfgdata (char *token, enum kwbimage_cmd cmdsw,
+					struct kwb_header *kwbhdr)
+{
+	bhr_t *mhdr = &kwbhdr->kwb_hdr;
+	extbhr_t *exthdr = &kwbhdr->kwb_exthdr;
+	int i;
+
+	switch (cmdsw) {
+	case CMD_BOOT_FROM:
+		i = get_table_entry_id (kwbimage_bootops,
+				"Kwbimage boot option", token);
+
+		if (i < 0)
+			goto INVL_DATA;
+
+		mhdr->blockid = i;
+		printf ("Preparing kirkwood boot image to boot "
+			"from %s\n", token);
+		break;
+	case CMD_NAND_ECC_MODE:
+		i = get_table_entry_id (kwbimage_eccmodes,
+			"NAND ecc mode", token);
+
+		if (i < 0)
+			goto INVL_DATA;
+
+		mhdr->nandeccmode = i;
+		printf ("Nand ECC mode = %s\n", token);
+		break;
+	case CMD_NAND_PAGE_SIZE:
+		mhdr->nandpagesize =
+			(uint16_t) check_get_hexval (token);
+		printf ("Nand page size = 0x%x\n", mhdr->nandpagesize);
+		break;
+	case CMD_SATA_PIO_MODE:
+		mhdr->satapiomode =
+			(uint8_t) check_get_hexval (token);
+		printf ("Sata PIO mode = 0x%x\n",
+				mhdr->satapiomode);
+		break;
+	case CMD_DDR_INIT_DELAY:
+		mhdr->ddrinitdelay =
+			(uint16_t) check_get_hexval (token);
+		printf ("DDR init delay = %d msec\n", mhdr->ddrinitdelay);
+		break;
+	case CMD_DATA:
+		exthdr->rcfg[datacmd_cnt].raddr =
+			check_get_hexval (token);
+
+		break;
+	case CMD_INVALID:
+		goto INVL_DATA;
+	default:
+		goto INVL_DATA;
+	}
+	return;
+
+INVL_DATA:
+	printf ("Error:%s[%d] - Invalid data\n", fname, lineno);
+	exit (EXIT_FAILURE);
+}
+
+/*
+ * this function sets the kwbimage header by-
+ * 	1. Abstracting input command line arguments data
+ *	2. parses the kwbimage configuration file and update extebded header data
+ *	3. calculates header, extended header and image checksums
+ */
+static void kwdimage_set_ext_header (struct kwb_header *kwbhdr, char* name) {
+	bhr_t *mhdr = &kwbhdr->kwb_hdr;
+	extbhr_t *exthdr = &kwbhdr->kwb_exthdr;
+	FILE *fd = NULL;
+	int j;
+	char *line = NULL;
+	char * token, *saveptr1, *saveptr2;
+	size_t len = 0;
+	enum kwbimage_cmd cmd;
+
+	fname = name;
+	/* set dram register offset */
+	exthdr->dramregsoffs = (intptr_t)&exthdr->rcfg - (intptr_t)mhdr;
+
+	if ((fd = fopen (name, "r")) == 0) {
+		printf ("Error:%s - Can't open\n", fname);
+		exit (EXIT_FAILURE);
+	}
+
+	/* Simple kwimage.cfg file parser */
+	lineno=0;
+	while ((getline (&line, &len, fd)) > 0) {
+		lineno++;
+		token = strtok_r (line, "\r\n", &saveptr1);
+		/* drop all lines with zero tokens (= empty lines) */
+		if (token == NULL)
+			continue;
+
+		for (j = 0, cmd = CMD_INVALID, line = token; ; line = NULL) {
+			token = strtok_r (line, " \t", &saveptr2);
+			if (token == NULL)
+			break;
+			/* Drop all text starting with '#' as comments */
+			if (token[0] == '#')
+				break;
+
+			/* Process rest as valid config command line */
+			switch (j) {
+			case CFG_COMMAND:
+				cmd = get_table_entry_id (kwbimage_cmds,
+						"Kwbimage command", token);
+
+				if (cmd == CMD_INVALID)
+					goto INVL_CMD;
+				break;
+
+			case CFG_DATA0:
+				kwbimage_check_cfgdata (token, cmd, kwbhdr);
+				break;
+
+			case CFG_DATA1:
+				if (cmd != CMD_DATA)
+					goto INVL_CMD;
+
+				exthdr->rcfg[datacmd_cnt].rdata =
+						check_get_hexval (token);
+
+				if (datacmd_cnt > KWBIMAGE_MAX_CONFIG ) {
+					printf ("Error:%s[%d] - Found more "
+						"than max(%zd) allowed "
+						"data configurations\n",
+						fname, lineno,
+						KWBIMAGE_MAX_CONFIG);
+				exit (EXIT_FAILURE);
+				} else
+					datacmd_cnt++;
+				break;
+
+			default:
+				goto INVL_CMD;
+			}
+			j++;
+		}
+	}
+	if (line)
+		free (line);
+
+	fclose (fd);
+	return;
+
+/*
+ * Invalid Command error reporring
+ *
+ * command CMD_DATA needs three strings on a line
+ * whereas other commands need only two.
+ *
+ * if more than two/three (as per command type) are observed,
+ * then error will be reported
+ */
+INVL_CMD:
+	printf ("Error:%s[%d] - Invalid command\n", fname, lineno);
+	exit (EXIT_FAILURE);
+}
+
+static void kwbimage_set_header (void *ptr, struct stat *sbuf, int ifd,
+				struct mkimage_params *params)
+{
+	struct kwb_header *hdr = (struct kwb_header *)ptr;
+	bhr_t *mhdr = &hdr->kwb_hdr;
+	extbhr_t *exthdr = &hdr->kwb_exthdr;
+	uint32_t checksum;
+	int size;
+
+	/* Build and add image checksum header */
+	checksum = kwbimage_checksum32 ((uint32_t *)ptr, sbuf->st_size, 0);
+
+	size = write (ifd, &checksum, sizeof(uint32_t));
+	if (size != sizeof(uint32_t)) {
+		printf ("Error:%s - Checksum write %d bytes %s\n",
+			params->cmdname, size, params->imagefile);
+		exit (EXIT_FAILURE);
+	}
+
+	sbuf->st_size += sizeof(uint32_t);
+
+	mhdr->blocksize = sbuf->st_size - sizeof(struct kwb_header);
+	mhdr->srcaddr = sizeof(struct kwb_header);
+	mhdr->destaddr= params->addr;
+	mhdr->execaddr =params->ep;
+	mhdr->ext = 0x1; /* header extension appended */
+
+	kwdimage_set_ext_header (hdr, params->imagename);
+	/* calculate checksums */
+	mhdr->checkSum = kwbimage_checksum8 ((void *)mhdr, sizeof(bhr_t), 0);
+	exthdr->checkSum = kwbimage_checksum8 ((void *)exthdr,
+						sizeof(extbhr_t), 0);
+}
+
+static int kwbimage_verify_header (unsigned char *ptr, int image_size,
+			struct mkimage_params *params)
+{
+	struct kwb_header *hdr = (struct kwb_header *)ptr;
+	bhr_t *mhdr = &hdr->kwb_hdr;
+	extbhr_t *exthdr = &hdr->kwb_exthdr;
+	uint8_t calc_hdrcsum;
+	uint8_t calc_exthdrcsum;
+
+	calc_hdrcsum = kwbimage_checksum8 ((void *)mhdr,
+			sizeof(bhr_t) - sizeof(uint8_t), 0);
+	if (calc_hdrcsum != mhdr->checkSum)
+		return -FDT_ERR_BADSTRUCTURE;	/* mhdr csum not matched */
+
+	calc_exthdrcsum = kwbimage_checksum8 ((void *)exthdr,
+			sizeof(extbhr_t) - sizeof(uint8_t), 0);
+	if (calc_hdrcsum != mhdr->checkSum)
+		return -FDT_ERR_BADSTRUCTURE; /* exthdr csum not matched */
+
+	return 0;
+}
+
+static void kwbimage_print_header (const void *ptr)
+{
+	struct kwb_header *hdr = (struct kwb_header *) ptr;
+	bhr_t *mhdr = &hdr->kwb_hdr;
+	char *name = get_table_entry_name (kwbimage_bootops,
+				"Kwbimage boot option",
+				(int) mhdr->blockid);
+
+	printf ("Image Type:   Kirkwood Boot from %s Image\n", name);
+	printf ("Data Size:    ");
+	genimg_print_size (mhdr->blocksize - sizeof(uint32_t));
+	printf ("Load Address: %08x\n", mhdr->destaddr);
+	printf ("Entry Point:  %08x\n", mhdr->execaddr);
+}
+
+static int kwbimage_check_image_types (uint8_t type)
+{
+	if (type == IH_TYPE_KWBIMAGE)
+		return EXIT_SUCCESS;
+	else
+		return EXIT_FAILURE;
+}
+
+/*
+ * kwbimage type parameters definition
+ */
+static struct image_type_params kwbimage_params = {
+	.name = "Kirkwood Boot Image support",
+	.header_size = sizeof(struct kwb_header),
+	.hdr = (void*)&kwbimage_header,
+	.check_image_type = kwbimage_check_image_types,
+	.verify_header = kwbimage_verify_header,
+	.print_header = kwbimage_print_header,
+	.set_header = kwbimage_set_header,
+	.check_params = kwbimage_check_params,
+};
+
+void init_kwb_image_type (void)
+{
+	mkimage_register (&kwbimage_params);
+}