ARM: davinci: fixes for cam_enc_4xx board

- change CONFIG_ENV_RANGE to contain 2 nand erase blocks,
  one for bad block reserve.
- remove from the envvariable "img_writeramdisk" the
  ubifsmount command, as it is not needed.
- erase the hole mtd partition containing u-boot
- save environment variable "dvn_app_vers" and "dvn_boot_vers"
  only after installing the new image.
changes requested from Marek Vasut:
- arm, davinci: fix eldk-4.2 warnings for cam_enc_4xx board
  - get rid of run_command2 usage
    needed since patch:
    commit 009dde1955583e306cf904c864068f3acb0db499
    Author: Simon Glass <sjg@chromium.org>
    Date:   Tue Feb 14 19:59:20 2012 +0000

    Rename run_command2() to run_command()
    is now in mainline.
  - add CONFIG_SPL_LIBGENERIC_SUPPORT support
  - remove CONFIG_CMD_PXE support
  - fix warning:
    cam_enc_4xx.c: In function 'menu_handle':
    cam_enc_4xx.c:609: warning: dereferencing type-punned pointer
    will break strict-aliasing rules
  - fix error:
    arm-linux-ld: u-boot-spl: Not enough room for program headers,
    try linking with -N

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Tom Rini <tom.rini@gmail.com>
Cc: Fletzer Martin <Martin.Fletzer@ait.ac.at>
Cc: Wolfgang Denk <wd@denx.de>

board/ait/cam_enc_4xx/cam_enc_4xx.c

@@ -21,6 +21,7 @@
 
 #include <common.h>
 #include <errno.h>
+#include <hush.h>
 #include <linux/mtd/nand.h>
 #include <nand.h>
 #include <miiphy.h>
@@ -554,7 +555,7 @@ static char *menu_handle(struct menu_display *display)
 {
 	struct menu *m;
 	int i;
-	char *choice = NULL;
+	void *choice = NULL;
 	char key[2];
 	int ret;
 	char *s;
@@ -606,7 +607,7 @@ static char *menu_handle(struct menu_display *display)
 	sprintf(key, "%d", 1);
 	menu_default_set(m, key);
 
-	if (menu_get_choice(m, (void **)&choice) != 1)
+	if (menu_get_choice(m, &choice) != 1)
 		debug("Problem picking a choice!\n");
 
 	menu_destroy(m);
@@ -653,7 +654,7 @@ static int ait_writeublheader(void)
 		sprintf(s, "%lx", i);
 		ret = setenv("header_addr", s);
 		if (ret == 0)
-			ret = run_command2("run img_writeheader", 0);
+			ret = run_command("run img_writeheader", 0);
 		if (ret != 0)
 			break;
 	}
@@ -697,7 +698,7 @@ static int ait_menu_install_images(void)
 		setenv("filesize", s);
 		switch (imgs[count].subtype) {
 		case FIT_SUBTYPE_DF_ENV_IMAGE:
-			ret = run_command2("run img_writedfenv", 0);
+			ret = run_command("run img_writedfenv", 0);
 			break;
 		case FIT_SUBTYPE_RAMDISK_IMAGE:
 			t = getenv("img_volume");
@@ -713,16 +714,16 @@ static int ait_menu_install_images(void)
 			if (ret != 0)
 				break;
 
-			ret = run_command2("run img_writeramdisk", 0);
+			ret = run_command("run img_writeramdisk", 0);
 			break;
 		case FIT_SUBTYPE_SPL_IMAGE:
-			ret = run_command2("run img_writespl", 0);
+			ret = run_command("run img_writespl", 0);
 			break;
 		case FIT_SUBTYPE_UBL_HEADER:
 			ret = ait_writeublheader();
 			break;
 		case FIT_SUBTYPE_UBOOT_IMAGE:
-			ret = run_command2("run img_writeuboot", 0);
+			ret = run_command("run img_writeuboot", 0);
 			break;
 		default:
 			/* not supported type */
@@ -731,8 +732,19 @@ static int ait_menu_install_images(void)
 		count++;
 	}
 	/* now save dvn_* and img_volume env vars to new values */
-	if (ret == 0)
-		ret = run_command2("run savenewvers", 0);
+	if (ret == 0) {
+		t = getenv("x_dvn_boot_vers");
+		if (t)
+			setenv("dvn_boot_vers", t);
+
+		t = getenv("x_dvn_app_vers");
+		if (t)
+			setenv("dvn_boot_vers", t);
+
+		setenv("x_dvn_boot_vers", NULL);
+		setenv("x_dvn_app_vers", NULL);
+		ret = run_command("run savenewvers", 0);
+	}
 
 	return ret;
 }
@@ -749,6 +761,8 @@ static int ait_menu_evaluate_load(char *choice)
 		break;
 	case '2':
 		/* cancel, back to main */
+		setenv("x_dvn_boot_vers", NULL);
+		setenv("x_dvn_app_vers", NULL);
 		break;
 	}
 
@@ -961,7 +975,7 @@ static int ait_menu_check_image(void)
 		if (s) {
 			ret = strcmp(s, imgs[found_uboot].desc);
 			if (ret != 0) {
-				setenv("dvn_boot_vers",
+				setenv("x_dvn_boot_vers",
 					imgs[found_uboot].desc);
 			} else {
 				found_uboot = -1;
@@ -976,7 +990,7 @@ static int ait_menu_check_image(void)
 		if (s) {
 			ret = strcmp(s, imgs[found_ramdisk].desc);
 			if (ret != 0) {
-				setenv("dvn_app_vers",
+				setenv("x_dvn_app_vers",
 					imgs[found_ramdisk].desc);
 			} else {
 				found_ramdisk = -1;
@@ -1005,7 +1019,7 @@ static int ait_menu_evaluate_update(char *choice)
 		break;
 	case '2':
 		/* load image */
-		ret = run_command2("run load_img", 0);
+		ret = run_command("run load_img", 0);
 		printf("ret: %d\n", ret);
 		if (ret)
 			return MENU_UPDATE;
@@ -1073,9 +1087,9 @@ int menu_show(int bootdelay)
 {
 	int ret;
 
-	run_command2("run saveparms", 0);
+	run_command("run saveparms", 0);
 	ret = ait_menu_show(&ait_main, bootdelay);
-	run_command2("run restoreparms", 0);
+	run_command("run restoreparms", 0);
 
 	if (ret == MENU_EXIT_BOOTCMD)
 		return 0;
@@ -1085,8 +1099,17 @@ int menu_show(int bootdelay)
 
 void menu_display_statusline(struct menu *m)
 {
-	printf("State: dvn_boot_vers: %s dvn_app_vers: %s\n",
-		getenv("dvn_boot_vers"), getenv("dvn_app_vers"));
+	char *s1, *s2;
+
+	s1 = getenv("x_dvn_boot_vers");
+	if (!s1)
+		s1 = getenv("dvn_boot_vers");
+
+	s2 = getenv("x_dvn_app_vers");
+	if (!s2)
+		s2 = getenv("dvn_app_vers");
+
+	printf("State: dvn_boot_vers: %s dvn_app_vers: %s\n", s1, s2);
 	return;
 }
 #endif

board/ait/cam_enc_4xx/config.mk

@@ -12,4 +12,11 @@ PAD_TO	:= 12320
 UBL_CONFIG = $(SRCTREE)/board/$(BOARDDIR)/ublimage.cfg
 ifndef CONFIG_SPL_BUILD
 ALL-y += $(obj)u-boot.ubl
+else
+# as SPL_TEXT_BASE is not page-aligned, we need for some
+# linkers the -n flag (Do not page align data), to prevent
+# the following error message:
+# arm-linux-ld: u-boot-spl: Not enough room for program headers, try linking
+# with -N
+LDFLAGS_u-boot-spl += -n
 endif

board/ait/cam_enc_4xx/u-boot-spl.lds

@@ -32,7 +32,7 @@ OUTPUT_ARCH(arm)
 ENTRY(_start)
 SECTIONS
 {
-	. = 0x00000000;
+	. = CONFIG_SPL_TEXT_BASE;
 
 	. = ALIGN(4);
 	.text      :

include/configs/cam_enc_4xx.h

@@ -161,15 +161,14 @@
 #define CONFIG_MENU
 #define CONFIG_MENU_SHOW
 #define CONFIG_FIT
-#define CONFIG_CMD_PXE
 #define CONFIG_BOARD_IMG_ADDR_R 0x80000000
 
 #ifdef CONFIG_NAND_DAVINCI
 #define CONFIG_ENV_SIZE			(16 << 10)
 #define CONFIG_ENV_IS_IN_NAND
 #define CONFIG_ENV_OFFSET		0x180000
+#define CONFIG_ENV_RANGE		0x040000
 #define CONFIG_ENV_OFFSET_REDUND	0x1c0000
-#define CONFIG_ENV_RANGE		0x020000
 #undef CONFIG_ENV_IS_IN_FLASH
 #endif
 
@@ -220,6 +219,7 @@
 
 /* Defines for SPL */
 #define CONFIG_SPL
+#define CONFIG_SPL_LIBGENERIC_SUPPORT
 #define CONFIG_SPL_NAND_SUPPORT
 #define CONFIG_SPL_NAND_SIMPLE
 #define CONFIG_SPL_NAND_LOAD
@@ -229,7 +229,7 @@
 #define CONFIG_SPL_LDSCRIPT		"$(BOARDDIR)/u-boot-spl.lds"
 #define CONFIG_SPL_STACK		(0x00010000 + 0x7f00)
 
-#define CONFIG_SPL_TEXT_BASE		0x0000020 /*CONFIG_SYS_SRAM_START*/
+#define CONFIG_SPL_TEXT_BASE		0x00000020 /*CONFIG_SYS_SRAM_START*/
 #define CONFIG_SPL_MAX_SIZE		12320
 
 #ifndef CONFIG_SPL_BUILD
@@ -274,6 +274,7 @@
 
 #define CONFIG_SYS_NAND_U_BOOT_OFFS	0x80000
 #define CONFIG_SYS_NAND_U_BOOT_SIZE	0xa0000
+#define CONFIG_SYS_NAND_U_BOOT_ERA_SIZE	0x100000
 
 /* for UBL header */
 #define CONFIG_SYS_UBL_BLOCK		(CONFIG_SYS_NAND_PAGE_SIZE)
@@ -429,7 +430,7 @@
 		" 0 3000;nandrbl uboot\0"				\
 	"writeuboot=nandrbl uboot;"					\
 		"nand erase " xstr(CONFIG_SYS_NAND_U_BOOT_OFFS) " "	\
-		 xstr(CONFIG_SYS_NAND_U_BOOT_SIZE)			\
+		 xstr(CONFIG_SYS_NAND_U_BOOT_ERA_SIZE)			\
 		";nand write " xstr(DVN4XX_UBOOT_ADDR_R_UBOOT)		\
 		" " xstr(CONFIG_SYS_NAND_U_BOOT_OFFS) " "		\
 		xstr(CONFIG_SYS_NAND_U_BOOT_SIZE) "\0"			\
@@ -466,14 +467,14 @@
 		"nand write ${img_addr_r} 0 3000;nandrbl uboot\0"	\
 	"img_writeuboot=nandrbl uboot;"					\
 		"nand erase " xstr(CONFIG_SYS_NAND_U_BOOT_OFFS) " "	\
-		 xstr(CONFIG_SYS_NAND_U_BOOT_SIZE)			\
+		 xstr(CONFIG_SYS_NAND_U_BOOT_ERA_SIZE)			\
 		";nand write ${img_addr_r} "				\
 		xstr(CONFIG_SYS_NAND_U_BOOT_OFFS) " "			\
 		xstr(CONFIG_SYS_NAND_U_BOOT_SIZE) "\0"			\
 	"img_writedfenv=ubi part ubi 2048;"				\
 		"ubi write ${img_addr_r} default ${filesize}\0"		\
 	"img_volume=rootfs1\0"						\
-	"img_writeramdisk=ubi part ubi 2048;ubifsmount ${img_volume};"	\
+	"img_writeramdisk=ubi part ubi 2048;"				\
 		"ubi write ${img_addr_r} ${img_volume} ${filesize}\0"	\
 	"load_img=tftp ${fit_addr_r} ${img_file}\0"			\
 	"net_nfs=run load_kernel; "					\