arm/km: introduce bootcount env variable and clean km_arm

This environment variable is used to set the bootcount address
for the kernel.

last_stage_init is not available for arm platforms. So the
calls to set_km_var and set_bootcount_addr are done in
misc_init_r.

Additionally some unneeded printouts were removed.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Acked-by: Heiko Schocher <hs@denx.de>
cc: Wolfgang Denk <wd@denx.de>
cc: Detlev Zundel <dzu@denx.de>
cc: Prafulla Wadaskar <prafulla@marvell.com>

board/keymile/km_arm/km_arm.c

@@ -145,16 +145,22 @@ int initialize_unit_leds(void)
 	return 0;
 }
 
+#if defined(CONFIG_BOOTCOUNT_LIMIT)
+void set_bootcount_addr(void)
+{
+	uchar buf[32];
+	unsigned int bootcountaddr;
+	bootcountaddr = gd->ram_size - BOOTCOUNT_ADDR;
+	sprintf((char *)buf, "0x%x", bootcountaddr);
+	setenv("bootcountaddr", (char *)buf);
+}
+#endif
+
 int misc_init_r(void)
 {
 	char *str;
 	int mach_type;
 
-	puts("Piggy:");
-	if (ethernet_present() == 0)
-		puts (" not");
-	puts(" present\n");
-
 	str = getenv("mach_type");
 	if (str != NULL) {
 		mach_type = simple_strtoul(str, NULL, 10);
@@ -163,7 +169,10 @@ int misc_init_r(void)
 	}
 
 	initialize_unit_leds();
-
+	set_km_env();
+#if defined(CONFIG_BOOTCOUNT_LIMIT)
+	set_bootcount_addr();
+#endif
 	return 0;
 }
 
@@ -182,7 +191,6 @@ int board_early_init_f(void)
 	writel(tmp | FLASH_GPIO_PIN , KW_GPIO0_BASE);
 	tmp = readl(KW_GPIO0_BASE + 4);
 	writel(tmp & (~FLASH_GPIO_PIN) , KW_GPIO0_BASE + 4);
-	printf("KM: setting NAND mode\n");
 
 #if defined(CONFIG_SOFT_I2C)
 	/* init the GPIO for I2C Bitbang driver */
@@ -212,12 +220,6 @@ int board_init(void)
 	return 0;
 }
 
-int last_stage_init(void)
-{
-	set_km_env();
-	return 0;
-}
-
 #if defined(CONFIG_CMD_SF)
 int do_spi_toggle(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {

include/configs/km/km_arm.h

@@ -64,6 +64,9 @@
 #define CONFIG_KM_KERNEL_ADDR	0x2000000	/* 4096KBytes */
 
 #define CONFIG_KM_DEF_ENV_CPU						\
+	"addbootcount="							\
+		"setenv bootargs ${bootargs} "				\
+		"bootcountaddr=${bootcountaddr}\0"			\
 	"addmtdparts=setenv bootargs ${bootargs} ${mtdparts}\0"		\
 	"boot=bootm ${actual_kernel_addr} - -\0"			\
 	"cramfsloadfdt=true\0"						\