[U-Boot] iPAQ 21x support (+PXA3xx NAND flash and MMC)

[Oliver Ford <ipaqlinux@oliford.co.uk>]

Hi,

I've recently started trying to use U-boot on an iPAQ 214 which runs on 
a PXA310 cpu.
I've got the basic boot up, NAND flash and MMC systems working so far.

I originally tried to use the zylonite's nand.c that's already in u-boot 
but it was very flaky and didn't support several things I needed like 
large-page command set and the hardware ecc.

I've now copied the latest pxa3xx nand flash code from the kernel and 
just modified it to cope without DMA and without IRQs.

I'm not sure it exactly fits in with the u-boot nand code (eg. it does 
an internal read ID scan to find the right command set) but it works a 
lot better than the board/zylonite/nand.c. Would this be useful to 
anyone else?

Also, can I, and how do I go about submitting the stuff for the iPAQ 
21x. The only change outside it's own config header and board/ dir is 
the a slight change to get the MMC code working on the pxa3xx (below).

Thanks,

Oliver



diff --git a/cpu/pxa/mmc.c b/cpu/pxa/mmc.c
index d735c8d..3b281d5 100644
--- a/cpu/pxa/mmc.c
+++ b/cpu/pxa/mmc.c
@@ -126,7 +126,7 @@ mmc_block_read(uchar * dst, ulong src, ulong len)
       MMC_I_MASK = ~MMC_I_MASK_RXFIFO_RD_REQ;
       while (len) {
               if (MMC_I_REG & MMC_I_REG_RXFIFO_RD_REQ) {
-#ifdef CONFIG_PXA27X
+#if defined(CONFIG_PXA27X) || defined(CONFIG_CPU_MONAHANS)
                       int i;
                       for (i = min(len, 32); i; i--) {
                               *dst++ = *((volatile uchar *)&MMC_RXFIFO);
@@ -558,7 +558,11 @@ mmc_init(int verbose)
       set_GPIO_mode(GPIO6_MMCCLK_MD);
       set_GPIO_mode(GPIO8_MMCCS0_MD);
#endif
+#ifdef CONFIG_CPU_MONAHANS
+       CKENA |= CKENA_12_MMC0;
+#else
       CKEN |= CKEN12_MMC;     /* enable MMC unit clock */
+#endif

       MMC_CLKRT = MMC_CLKRT_0_3125MHZ;
       MMC_RESTO = MMC_RES_TO_MAX;