keymile, common: add setting of some environment variables

This patch adds last_stage_init to all keymile boards. And
in the last stage init some environment variables for u-boot
were set. Currently these are pnvramaddr, pram and var address.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
cc: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Wolfgang Denk <wd@denx.de>
cc: Kim Phillips <kim.phillips@freescale.com>

5 files changed, 50 insertions, 0 deletions

diff --git a/board/keymile/common/common.c b/board/keymile/common/common.c
index 8392a6413ea..4883fe588b8 100644
--- a/board/keymile/common/common.c
+++ b/board/keymile/common/common.c
@@ -42,6 +42,7 @@
 
 static void i2c_write_start_seq(void);
 static int i2c_make_abort(void);
+DECLARE_GLOBAL_DATA_PTR;
 
 int ivm_calc_crc(unsigned char *buf, int len)
 {
@@ -73,6 +74,41 @@ int ivm_calc_crc(unsigned char *buf, int len)
 	return crc;
 }
 
+/*
+ * Set Keymile specific environment variables
+ * Currently only some memory layout variables are calculated here
+ * ... ------------------------------------------------
+ * ... |@rootfsaddr |@pnvramaddr |@varaddr |@reserved |@END_OF_RAM
+ * ... |<------------------- pram ------------------->|
+ * ... ------------------------------------------------
+ * @END_OF_RAM: denotes the RAM size
+ * @pnvramaddr: Startadress of pseudo non volatile RAM in hex
+ * @pram      : preserved ram size in k
+ * @varaddr   : startadress for /var mounted into RAM
+ */
+int set_km_env(void)
+{
+	uchar buf[32];
+	unsigned int pnvramaddr;
+	unsigned int pram;
+	unsigned int varaddr;
+
+	pnvramaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM
+			- CONFIG_KM_PNVRAM;
+	sprintf((char *)buf, "0x%x", pnvramaddr);
+	setenv("pnvramaddr", (char *)buf);
+
+	pram = (CONFIG_KM_RESERVED_PRAM + CONFIG_KM_PHRAM + CONFIG_KM_PNVRAM) /
+		0x400;
+	sprintf((char *)buf, "0x%x", pram);
+	setenv("pram", (char *)buf);
+
+	varaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM;
+	sprintf((char *)buf, "0x%x", varaddr);
+	setenv("varaddr", (char *)buf);
+	return 0;
+}
+
 static int ivm_set_value(char *name, char *value)
 {
 	char tempbuf[256];
diff --git a/board/keymile/common/common.h b/board/keymile/common/common.h
index e32de8d9fa4..099de98c6d9 100644
--- a/board/keymile/common/common.h
+++ b/board/keymile/common/common.h
@@ -50,6 +50,7 @@ int ivm_read_eeprom(void);
 int keymile_hdlc_enet_initialize(bd_t *bis);
 #endif
 
+int set_km_env(void);
 int fdt_set_node_and_value(void *blob,
 			char *nodename,
 			char *regname,
diff --git a/board/keymile/km83xx/km83xx.c b/board/keymile/km83xx/km83xx.c
index f9186e813b9..17560c8dbae 100644
--- a/board/keymile/km83xx/km83xx.c
+++ b/board/keymile/km83xx/km83xx.c
@@ -190,6 +190,12 @@ int misc_init_r(void)
 	return 0;
 }
 
+int last_stage_init(void)
+{
+	set_km_env();
+	return 0;
+}
+
 int fixed_sdram(void)
 {
 	immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
diff --git a/board/keymile/km_arm/km_arm.c b/board/keymile/km_arm/km_arm.c
index cb999b23fae..c772ee2a558 100644
--- a/board/keymile/km_arm/km_arm.c
+++ b/board/keymile/km_arm/km_arm.c
@@ -212,6 +212,12 @@ 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[])
 {
diff --git a/board/keymile/mgcoge/mgcoge.c b/board/keymile/mgcoge/mgcoge.c
index 7f487f109e9..7b346849bae 100644
--- a/board/keymile/mgcoge/mgcoge.c
+++ b/board/keymile/mgcoge/mgcoge.c
@@ -310,6 +310,7 @@ int last_stage_init(void)
 		puts("DIP:   Enabled\n");
 		setenv("actual_bank", "0");
 	}
+	set_km_env();
 	return 0;
 }