From f1fef1d8a141e0b4e4520d66e162c06ff047bd16 Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Mon, 26 Apr 2010 13:07:28 +0200 Subject: 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 Signed-off-by: Heiko Schocher Acked-by: Kim Phillips cc: Valentin Longchamp cc: Wolfgang Denk cc: Kim Phillips --- board/keymile/common/common.c | 36 ++++++++++++++++++++++++++++++++++++ board/keymile/common/common.h | 1 + 2 files changed, 37 insertions(+) (limited to 'board/keymile/common') diff --git a/board/keymile/common/common.c b/board/keymile/common/common.c index 8392a64..4883fe5 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 e32de8d..099de98 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, -- cgit v1.1