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| author | Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> | 2009-03-03 15:11:17 +0900 |
|---|---|---|
| committer | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2009-03-12 23:58:30 +0900 |
| commit | ada9318252f51c2626e9837c623f9812b0308dea (patch) | |
| tree | be5eac4da7830944db7daf1b42028ac94fe0b9d7 /doc | |
| parent | 06b18163b57e6b0349b0c299222d50e7b1e41e50 (diff) | |
| download | u-boot-imx-ada9318252f51c2626e9837c623f9812b0308dea.zip u-boot-imx-ada9318252f51c2626e9837c623f9812b0308dea.tar.gz u-boot-imx-ada9318252f51c2626e9837c623f9812b0308dea.tar.bz2 | |
sh: Add support 32-Bit Extended Address Mode to sh7785lcr
We can built 'make sh7785lcr_32bit_config'. And add new command "pmb"
for this mode. This command changes PMB for using 512MB system memory.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.sh7785lcr | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/doc/README.sh7785lcr b/doc/README.sh7785lcr index c8d8ccd..56455fc 100644 --- a/doc/README.sh7785lcr +++ b/doc/README.sh7785lcr @@ -33,6 +33,38 @@ This board has 2 physical memory maps. It can be changed with DIP switch(S2-5). 0x40000000 - 0x5fffffff | DDR SDRAM | (cannot use) +configuration for This board: +============================= + +You can choose configuration as follows: + + - make sh7785lcr_config + - make sh7785lcr_32bit_config + +When you use "make sh7785lcr_config", there is build U-Boot for 29-bit +address mode. This mode can use 128MB DDR-SDRAM. + +When you use "make sh7785lcr_32bit_config", there is build U-Boot for 32-bit +extended address mode. This mode can use 384MB DDR-SDRAM. And if you run +"pmb" command, this mode can use 512MB DDR-SDRAM. + + * 32-bit extended address mode PMB mapping * + a) on start-up + virt | phys | size | device + -------------+---------------+---------------+--------------- + 0x88000000 | 0x48000000 | 384MB | DDR-SDRAM (Cacheable) + 0xa0000000 | 0x00000000 | 64MB | NOR Flash + 0xa4000000 | 0x04000000 | 16MB | PLD + 0xa6000000 | 0x08000000 | 16MB | USB + 0xa8000000 | 0x48000000 | 384MB | DDR-SDRAM (Non-cacheable) + + b) after "pmb" command + virt | phys | size | device + -------------+---------------+---------------+--------------- + 0x80000000 | 0x40000000 | 512MB | DDR-SDRAM (Cacheable) + 0xa0000000 | 0x40000000 | 512MB | DDR-SDRAM (Non-cacheable) + + This board specific command: ============================ @@ -41,6 +73,7 @@ This board has the following its specific command: - hwtest - printmac - setmac + - pmb (sh7785lcr_32bit_config only) 1. hwtest @@ -80,3 +113,11 @@ This command writes MAC address of this board. i.e) => setmac 00:00:87:**:**:** + + +4. pmb + +This command change PMB for DDR-SDRAM all mapping. However you cannot use +NOR Flash and USB Host on U-Boot when you run this command. +i.e) +=> pmb |