From d873133f2ba9bd613d5f6552c31cc70fb13f15d3 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Mon, 11 May 2009 13:46:14 +0200 Subject: ppc4xx: Add Sequoia RAM-booting target This patch adds another build target for the AMCC Sequoia PPC440EPx eval board. This RAM-booting version is targeted for boards without NOR FLASH (NAND booting) which need a possibility to initially program their NAND FLASH. Using a JTAG debugger (e.g. BDI2000/3000) configured to setup the SDRAM, this debugger can load this RAM- booting image to the target address in SDRAM (in this case 0x1000000) and start it there. Then U-Boot's standard NAND commands can be used to program the NAND FLASH (e.g. "nand write ..."). Here the commands to load and start this image from the BDI2000: 440EPX>reset halt 440EPX>load 0x1000000 /tftpboot/sequoia/u-boot.bin 440EPX>go 0x1000000 Please note that this image automatically scans for an already initialized SDRAM TLB (detected by EPN=0). This TLB will not be cleared. This TLB doesn't need to be TLB #0, this RAM-booting version will detect it and preserve it. So booting via BDI2000 will work and booting with a complete different TLB init via U-Boot works as well. Signed-off-by: Stefan Roese --- Makefile | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'Makefile') diff --git a/Makefile b/Makefile index 4983c0e..10f6b1f 100644 --- a/Makefile +++ b/Makefile @@ -1533,6 +1533,17 @@ rainier_nand_config: unconfig @echo "TEXT_BASE = 0x01000000" > $(obj)board/amcc/sequoia/config.tmp @echo "CONFIG_NAND_U_BOOT = y" >> $(obj)include/config.mk +sequoia_ramboot_config \ +rainier_ramboot_config: unconfig + @mkdir -p $(obj)include $(obj)board/amcc/sequoia + @echo "#define CONFIG_SYS_RAMBOOT" > $(obj)include/config.h + @echo "#define CONFIG_$$(echo $(subst ,,$(@:_config=)) | \ + tr '[:lower:]' '[:upper:]')" >> $(obj)include/config.h + @$(MKCONFIG) -n $@ -a sequoia ppc ppc4xx sequoia amcc + @echo "TEXT_BASE = 0x01000000" > $(obj)board/amcc/sequoia/config.tmp + @echo "LDSCRIPT = board/amcc/sequoia/u-boot-ram.lds" >> \ + $(obj)board/amcc/sequoia/config.tmp + taihu_config: unconfig @$(MKCONFIG) $(@:_config=) ppc ppc4xx taihu amcc -- cgit v1.1