[PATCH] mpc83xx: minor 8315 nand boot fixes
Kim Phillips
kim.phillips at freescale.com
Thu Jan 7 22:44:18 CET 2010
o silence make during ln echo
o update documentation
o and avoid:
$ ./MAKEALL MPC8315ERDB_NAND
Configuring for MPC8315ERDB board...
sdram.o: In function `fixed_sdram':
/home/r1aaha/git/u-boot/nand_spl/board/freescale/mpc8313erdb/sdram.c:72: undefined reference to `udelay'
by renaming udelay -> __udelay in the spirit of commit
3eb90bad651fab39cffba750ec4421a9c01d60e7 "Generic udelay() with watchdog
support".
Signed-off-by: Kim Phillips <kim.phillips at freescale.com>
---
Makefile | 2 +-
board/freescale/mpc8315erdb/sdram.c | 2 +-
doc/README.mpc8315erdb | 29 +++++++++++++++++++++++++++--
3 files changed, 29 insertions(+), 4 deletions(-)
diff --git a/Makefile b/Makefile
index cfbbb3a..7dca112 100644
--- a/Makefile
+++ b/Makefile
@@ -2263,7 +2263,7 @@ MPC8313ERDB_NAND_66_config: unconfig
MPC8315ERDB_NAND_config \
MPC8315ERDB_config: unconfig
- if [ "$(findstring _NAND_,$@)" ] ; then \
+ @if [ "$(findstring _NAND_,$@)" ] ; then \
ln -sf mpc8313erdb nand_spl/board/freescale/mpc8315erdb ; \
fi ;
@$(MKCONFIG) -t $(@:_config=) MPC8315ERDB ppc mpc83xx mpc8315erdb freescale
diff --git a/board/freescale/mpc8315erdb/sdram.c b/board/freescale/mpc8315erdb/sdram.c
index 02c99e9..fe8ec1e 100644
--- a/board/freescale/mpc8315erdb/sdram.c
+++ b/board/freescale/mpc8315erdb/sdram.c
@@ -69,7 +69,7 @@ static long fixed_sdram(void)
* Erratum DDR3 requires a 50ms delay after clearing DDRCDR[DDR_cfg],
* or the DDR2 controller may fail to initialize correctly.
*/
- udelay(50000);
+ __udelay(50000);
im->ddr.csbnds[0].csbnds = (msize - 1) >> 24;
im->ddr.cs_config[0] = CONFIG_SYS_DDR_CS0_CONFIG;
diff --git a/doc/README.mpc8315erdb b/doc/README.mpc8315erdb
index 7d476d0..b32132d 100644
--- a/doc/README.mpc8315erdb
+++ b/doc/README.mpc8315erdb
@@ -15,6 +15,18 @@ Freescale MPC8315ERDB Board
4321 4321
(where the '*' indicates the position of the tab of the switch.)
+ To boot the image at the beginning of NAND flash, use these
+ DIP switch settings for S3 S4:
+
+ +------+ +------+
+ | * | | *** |
+ | *** | | * |
+ +------+ ON +------+ ON
+ 4321 4321
+ (where the '*' indicates the position of the tab of the switch.)
+
+ When booting from NAND, use u-boot-nand.bin, not u-boot.bin.
+
2. Memory Map
The memory map looks like this:
@@ -26,6 +38,9 @@ Freescale MPC8315ERDB Board
0xe060_0000 0xe060_7fff NAND FLASH (CS1) 32K
0xfe00_0000 0xfe7f_ffff NOR FLASH (CS0) 8M
+ When booting from NAND, NAND flash is CS0 and NOR flash
+ is CS1.
+
3. Definitions
3.1 Explanation of NEW definitions in:
@@ -43,13 +58,15 @@ Freescale MPC8315ERDB Board
export CROSS_COMPILE=your-cross-compiler-prefix-
make distclean
- make MPC8315ERDB_config
+ make MPC8315ERDB_config (or MPC8315ERDB_NAND_config for u-boot-nand.bin)
make all
5. Downloading and Flashing Images
5.1 Reflash U-boot Image using U-boot
+ NOR flash:
+
tftp 40000 u-boot.bin
protect off all
erase fe000000 fe1fffff
@@ -60,6 +77,15 @@ Freescale MPC8315ERDB Board
You have to supply the correct byte count with 'xxxx'
from the TFTP result log.
+ NAND flash:
+
+ =>tftpboot $loadaddr <filename>
+ =>nand erase 0 0x80000
+ =>nand write $loadaddr 0 0x80000
+
+ ...where 0x80000 is the filesize rounded up to
+ the next 0x20000 increment.
+
5.2 Downloading and Booting Linux Kernel
Ensure that all networking-related environment variables are set
@@ -76,5 +102,4 @@ Freescale MPC8315ERDB Board
6 Notes
- Booting from NAND flash is not yet supported.
The console baudrate for MPC8315ERDB is 115200bps.
--
1.6.6
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