-----Original Message----- From: Wood Scott-B07421 Sent: Thursday, January 17, 2013 4:29 AM To: Xie Shaohui-B21989 Cc: u-boot@lists.denx.de Subject: Re: [U-Boot] [PATCH 1/3] powerpc/p5040: enable NAND boot support
On 01/15/2013 08:39:38 PM, Shaohui Xie wrote:
Signed-off-by: Shaohui Xie Shaohui.Xie@freescale.com
boards.cfg | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/boards.cfg b/boards.cfg index e4b0d44..8cf4936 100644 --- a/boards.cfg +++ b/boards.cfg @@ -855,6 +855,7 @@ P5020DS_SECURE_BOOT powerpc mpc85xx corenet_ds freesca P5020DS_SPIFLASH powerpc mpc85xx corenet_ds freescale - P5020DS:RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF80000 P5020DS_SRIO_PCIE_BOOT powerpc mpc85xx corenet_ds freescale - P5020DS:SRIO_PCIE_BOOT_SLAVE,SYS_TEXT_BASE=0xFFF80000 P5040DS powerpc mpc85xx corenet_ds freescale +P5040DS_NAND powerpc mpc85xx corenet_ds freescale - P5040DS:RAMBOOT_PBL,NAND,SYS_TEXT_BASE=0xFFF80000 BSC9131RDB_SPIFLASH powerpc mpc85xx bsc9131rdb freescale - BSC9131RDB:BSC9131RDB,SPIFLASH stxgp3 powerpc mpc85xx stxgp3 stx stxssa powerpc mpc85xx stxssa stx - stxssa
This needs more explanation. What sort of image am I supposed to get when I build "P5040DS_NAND"? Where is the PBI?
[S.H] there is already a readme for p3041/p5020/p4080 (doc/README.pblimage), With the PBL tool, we will get a ramboot image "u-boot.pbl". and also the PBI, it is shared by P3/P4/P5.
What is the long-term plan for fixing the problem of the environment not being available until after relocation? With SPL we could use CONFIG_NAND_ENV_DST (which has some issues, but they're fixable).
[S.H] this will need export some NAND read APIs (like load ENV stuff from CONFIG_NAND_ENV_DST), then they can be reused before relocation even not using SPL. Please suggest.
It would also be nice to include instructions for configuring the board to boot from NAND in a README
[S.H] This exist in the above readme.
(Freescale's user manuals often do not make
this clear, especially for soft configuration). Also please provide a built-in command (or script in the default environment) to soft-boot into NAND (or if it already exists, please document it).
[S.H] I was told that when doing ramboot, I should not assume the board has a NOR flash, for ex. on customer's board, they may only have NAND. So I did not do this.
Best Regards, Shaohui Xie