From: Scott Wood Date: Mon, 27 Oct 2008 20:57:08 +0000 (-0500) Subject: mpc8313erdb: Document NAND boot. X-Git-Tag: v2009.01-rc1~107 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=5cdade07b118d07154cb882650f9778cecc8a87c;p=oweals%2Fu-boot.git mpc8313erdb: Document NAND boot. Previously, the documentation claimed that NAND boot is not supported. This is no longer true. Signed-off-by: Scott Wood --- diff --git a/doc/README.mpc8313erdb b/doc/README.mpc8313erdb index 7c1af17c50..be7ef32b45 100644 --- a/doc/README.mpc8313erdb +++ b/doc/README.mpc8313erdb @@ -15,6 +15,18 @@ Freescale MPC8313ERDB 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: @@ -29,6 +41,9 @@ Freescale MPC8313ERDB Board LED Control (CS3) 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: @@ -45,15 +60,20 @@ Freescale MPC8313ERDB Board export CROSS_COMPILE=your-cross-compiler-prefix- make distclean - make MPC8313ERDB_33_config - (or make MPC8313ERDB_66_config, depending on the speed of - the oscillator on your board) + make MPC8313ERDB_XXX_config + (where XXX is: + 33 - 33 MHz oscillator, boot from NOR flash + 66 - 66 MHz oscillator, boot from NOR flash + NAND_33 - 33 MHz oscillator, boot from NAND flash + NAND_66 - 66 MHz oscillator, boot from NAND flash) make 5. Downloading and Flashing Images 5.1 Reflash U-boot Image using U-boot + NOR flash: + =>run tftpflash You may want to try @@ -63,6 +83,15 @@ Freescale MPC8313ERDB Board have an alternate means of programming the flash available if the new u-boot doesn't boot. + NAND flash: + + =>tftpboot $loadaddr + =>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 @@ -79,5 +108,4 @@ Freescale MPC8313ERDB Board 6 Notes - Booting from NAND flash is not yet supported. The console baudrate for MPC8313ERDB is 115200bps.