Patch by Kurt Stremerch, 28 May 2004:
Add support for Exys XSEngine board
Some code cleanup.
diff --git a/board/xsengine/Makefile b/board/xsengine/Makefile
new file mode 100644
index 0000000..df931e3
--- /dev/null
+++ b/board/xsengine/Makefile
@@ -0,0 +1,47 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = lib$(BOARD).a
+
+OBJS := xsengine.o flash.o
+SOBJS := memsetup.o
+
+$(LIB): $(OBJS) $(SOBJS)
+ $(AR) crv $@ $(OBJS) $(SOBJS)
+
+clean:
+ rm -f $(SOBJS) $(OBJS)
+
+distclean: clean
+ rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+.depend: Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+ $(CC) -M --disassemble-all $(CPPFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+-include .depend
+
+#########################################################################
diff --git a/board/xsengine/config.mk b/board/xsengine/config.mk
new file mode 100644
index 0000000..148c519
--- /dev/null
+++ b/board/xsengine/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0xA3F80000
diff --git a/board/xsengine/flash.c b/board/xsengine/flash.c
new file mode 100644
index 0000000..ac14bfe
--- /dev/null
+++ b/board/xsengine/flash.c
@@ -0,0 +1,565 @@
+/*
+ * (C) Copyright 2002
+ * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
+ *
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <linux/byteorder/swab.h>
+
+#if defined CFG_JFFS_CUSTOM_PART
+#include <jffs2/jffs2.h>
+#endif
+
+#define SWAP(x) __swab32(x)
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+/* Functions */
+static ulong flash_get_size (vu_long *addr, flash_info_t *info);
+static int write_word (flash_info_t *info, ulong dest, ulong data);
+static void flash_get_offsets (ulong base, flash_info_t *info);
+
+#if defined CFG_JFFS_CUSTOM_PART
+
+/*
+ * jffs2_part_info - get information about a JFFS2 partition
+ *
+ * @part_num: number of the partition you want to get info about
+ * @return: struct part_info* in case of success, 0 if failure
+ */
+
+static struct part_info part;
+static int current_part = -1;
+
+struct part_info* jffs2_part_info(int part_num) {
+ void *jffs2_priv_saved = part.jffs2_priv;
+
+ printf("jffs2_part_info: part_num=%i\n",part_num);
+
+ if (current_part == part_num)
+ return ∂
+
+ /* u-boot partition */
+ if(part_num==0){
+ memset(&part, 0, sizeof(part));
+
+ part.offset=(char*)0x00000000;
+ part.size=256*1024;
+
+ /* Mark the struct as ready */
+ current_part = part_num;
+
+ printf("part.offset = 0x%08x\n",(unsigned int)part.offset);
+ printf("part.size = 0x%08x\n",(unsigned int)part.size);
+ }
+
+ /* primary OS+firmware partition */
+ if(part_num==1){
+ memset(&part, 0, sizeof(part));
+
+ part.offset=(char*)0x00040000;
+ part.size=1024*1024;
+
+ /* Mark the struct as ready */
+ current_part = part_num;
+
+ printf("part.offset = 0x%08x\n",(unsigned int)part.offset);
+ printf("part.size = 0x%08x\n",(unsigned int)part.size);
+ }
+
+ /* secondary OS+firmware partition */
+ if(part_num==2){
+ memset(&part, 0, sizeof(part));
+
+ part.offset=(char*)0x00140000;
+ part.size=8*1024*1024;
+
+ /* Mark the struct as ready */
+ current_part = part_num;
+
+ printf("part.offset = 0x%08x\n",(unsigned int)part.offset);
+ printf("part.size = 0x%08x\n",(unsigned int)part.size);
+ }
+
+ if (current_part == part_num) {
+ part.usr_priv = ¤t_part;
+ part.jffs2_priv = jffs2_priv_saved;
+ return ∂
+ }
+
+ printf("jffs2_part_info: end of partition table\n");
+ return 0;
+}
+#endif
+
+
+/*-----------------------------------------------------------------------
+ */
+unsigned long flash_init (void)
+{
+ int i;
+ ulong size = 0;
+
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
+ switch (i) {
+ case 0:
+ flash_get_size ((long *) PHYS_FLASH_1, &flash_info[i]);
+ flash_get_offsets (PHYS_FLASH_1, &flash_info[i]);
+ break;
+ case 1:
+ flash_get_size ((long *) PHYS_FLASH_2, &flash_info[i]);
+ flash_get_offsets (PHYS_FLASH_2, &flash_info[i]);
+ break;
+ default:
+ panic ("configured too many flash banks!\n");
+ break;
+ }
+ size += flash_info[i].size;
+ }
+
+ /* Protect monitor and environment sectors */
+ flash_protect ( FLAG_PROTECT_SET,CFG_FLASH_BASE,CFG_FLASH_BASE + monitor_flash_len - 1,&flash_info[0] );
+ flash_protect ( FLAG_PROTECT_SET,CFG_ENV_ADDR,CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0] );
+
+ return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+static void flash_get_offsets (ulong base, flash_info_t *info)
+{
+ int i;
+
+ if (info->flash_id == FLASH_UNKNOWN) return;
+
+ if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD) {
+ for (i = 0; i < info->sector_count; i++) {
+ info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE);
+ info->protect[i] = 0;
+ }
+ }
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t *info)
+{
+ int i;
+
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf ("missing or unknown FLASH type\n");
+ return;
+ }
+
+ switch (info->flash_id & FLASH_VENDMASK) {
+ case FLASH_MAN_AMD: printf ("AMD "); break;
+ case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
+ default: printf ("Unknown Vendor "); break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ case FLASH_AMLV128U: printf ("AM29LV128ML (128Mbit, uniform sector size)\n");
+ break;
+ case FLASH_AMLV320U: printf ("AM29LV320ML (32Mbit, uniform sector size)\n");
+ break;
+ case FLASH_AMLV640U: printf ("AM29LV640ML (64Mbit, uniform sector size)\n");
+ break;
+ case FLASH_AMLV320B: printf ("AM29LV320MB (32Mbit, bottom boot sect)\n");
+ break;
+ default: printf ("Unknown Chip Type\n");
+ break;
+ }
+
+ printf (" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, info->sector_count);
+
+ printf (" Sector Start Addresses:");
+ for (i=0; i<info->sector_count; ++i) {
+ if ((i % 5) == 0)
+ printf ("\n ");
+ printf (" %08lX%s",
+ info->start[i],
+ info->protect[i] ? " (RO)" : " "
+ );
+ }
+ printf ("\n");
+ return;
+}
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+static ulong flash_get_size (vu_long *addr, flash_info_t *info)
+{
+ short i;
+ ulong value;
+ ulong base = (ulong)addr;
+
+ /* Write auto select command: read Manufacturer ID */
+ addr[0x0555] = 0x00AA00AA;
+ addr[0x02AA] = 0x00550055;
+ addr[0x0555] = 0x00900090;
+
+ value = addr[0];
+
+ debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
+
+ switch (value) {
+ case AMD_MANUFACT:
+ debug ("Manufacturer: AMD\n");
+ info->flash_id = FLASH_MAN_AMD;
+ break;
+ case FUJ_MANUFACT:
+ debug ("Manufacturer: FUJITSU\n");
+ info->flash_id = FLASH_MAN_FUJ;
+ break;
+ default:
+ debug ("Manufacturer: *** unknown ***\n");
+ info->flash_id = FLASH_UNKNOWN;
+ info->sector_count = 0;
+ info->size = 0;
+ return (0); /* no or unknown flash */
+ }
+
+ value = addr[1]; /* device ID */
+
+ debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
+
+ switch (value) {
+
+ case AMD_ID_MIRROR:
+ debug ("Mirror Bit flash: addr[14] = %08lX addr[15] = %08lX\n",
+ addr[14], addr[15]);
+ switch(addr[14]) {
+ case AMD_ID_LV128U_2:
+ if (addr[15] != AMD_ID_LV128U_3) {
+ debug ("Chip: AMLV128U -> unknown\n");
+ info->flash_id = FLASH_UNKNOWN;
+ } else {
+ debug ("Chip: AMLV128U\n");
+ info->flash_id += FLASH_AMLV128U;
+ info->sector_count = 256;
+ info->size = 0x02000000;
+ }
+ break; /* => 32 MB */
+ case AMD_ID_LV640U_2:
+ if (addr[15] != AMD_ID_LV640U_3) {
+ debug ("Chip: AMLV640U -> unknown\n");
+ info->flash_id = FLASH_UNKNOWN;
+ } else {
+ debug ("Chip: AMLV640U\n");
+ info->flash_id += FLASH_AMLV640U;
+ info->sector_count = 128;
+ info->size = 0x01000000;
+ }
+ break; /* => 16 MB */
+ case AMD_ID_LV320B_2:
+ if (addr[15] != AMD_ID_LV320B_3) {
+ debug ("Chip: AMLV320B -> unknown\n");
+ info->flash_id = FLASH_UNKNOWN;
+ } else {
+ debug ("Chip: AMLV320B\n");
+ info->flash_id += FLASH_AMLV320B;
+ info->sector_count = 71;
+ info->size = 0x00800000;
+ }
+ break; /* => 8 MB */
+ default:
+ debug ("Chip: *** unknown ***\n");
+ info->flash_id = FLASH_UNKNOWN;
+ break;
+ }
+ break;
+
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ return (0); /* => no or unknown flash */
+ }
+
+ /* set up sector start address table */
+ switch (value) {
+ case AMD_ID_MIRROR:
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ /* only known types here - no default */
+ case FLASH_AMLV128U:
+ case FLASH_AMLV640U:
+ case FLASH_AMLV320U:
+ for (i = 0; i < info->sector_count; i++) {
+ info->start[i] = base;
+ base += 0x20000;
+ }
+ break;
+ case FLASH_AMLV320B:
+ for (i = 0; i < info->sector_count; i++) {
+ info->start[i] = base;
+ /*
+ * The first 8 sectors are 8 kB,
+ * all the other ones are 64 kB
+ */
+ base += (i < 8)
+ ? 2 * ( 8 << 10)
+ : 2 * (64 << 10);
+ }
+ break;
+ }
+ break;
+
+ default:
+ return (0);
+ break;
+ }
+
+#if 0
+ /* check for protected sectors */
+ for (i = 0; i < info->sector_count; i++) {
+ /* read sector protection at sector address, (A7 .. A0) = 0x02 */
+ /* D0 = 1 if protected */
+ addr = (volatile unsigned long *)(info->start[i]);
+ info->protect[i] = addr[2] & 1;
+ }
+#endif
+
+ /*
+ * Prevent writes to uninitialized FLASH.
+ */
+ if (info->flash_id != FLASH_UNKNOWN) {
+ addr = (volatile unsigned long *)info->start[0];
+
+ *addr = 0x00F000F0; /* reset bank */
+ }
+
+ return (info->size);
+}
+
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ vu_long *addr = (vu_long*)(info->start[0]);
+ int flag, prot, sect, l_sect;
+ ulong start, now, last;
+
+ debug ("flash_erase: first: %d last: %d\n", s_first, s_last);
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf ("- missing\n");
+ } else {
+ printf ("- no sectors to erase\n");
+ }
+ return 1;
+ }
+
+ if ((info->flash_id == FLASH_UNKNOWN) ||
+ (info->flash_id > FLASH_AMD_COMP)) {
+ printf ("Can't erase unknown flash type %08lx - aborted\n",
+ info->flash_id);
+ return 1;
+ }
+
+ prot = 0;
+ for (sect=s_first; sect<=s_last; ++sect) {
+ if (info->protect[sect]) {
+ prot++;
+ }
+ }
+
+ if (prot) {
+ printf ("- Warning: %d protected sectors will not be erased!\n",
+ prot);
+ } else {
+ printf ("\n");
+ }
+
+ l_sect = -1;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ addr[0x0555] = 0x00AA00AA;
+ addr[0x02AA] = 0x00550055;
+ addr[0x0555] = 0x00800080;
+ addr[0x0555] = 0x00AA00AA;
+ addr[0x02AA] = 0x00550055;
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect<=s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ addr = (vu_long*)(info->start[sect]);
+ addr[0] = 0x00300030;
+ l_sect = sect;
+ }
+ }
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ /* wait at least 80us - let's wait 1 ms */
+ udelay (1000);
+
+ /*
+ * We wait for the last triggered sector
+ */
+ if (l_sect < 0)
+ goto DONE;
+
+ start = get_timer (0);
+ last = start;
+ addr = (vu_long*)(info->start[l_sect]);
+ while ((addr[0] & 0x00800080) != 0x00800080) {
+ if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
+ printf ("Timeout\n");
+ return 1;
+ }
+ /* show that we're waiting */
+ if ((now - last) > 100000) { /* every second */
+ putc ('.');
+ last = now;
+ }
+ }
+
+DONE:
+ /* reset to read mode */
+ addr = (volatile unsigned long *)info->start[0];
+ addr[0] = 0x00F000F0; /* reset bank */
+
+ printf (" done\n");
+ return 0;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+ ulong cp, wp, data;
+ int i, l, rc;
+
+ wp = (addr & ~3); /* get lower word aligned address */
+
+ /*
+ * handle unaligned start bytes
+ */
+ if ((l = addr - wp) != 0) {
+ data = 0;
+ for (i=0, cp=wp; i<l; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *)cp);
+ }
+ for (; i<4 && cnt>0; ++i) {
+ data = (data << 8) | *src++;
+ --cnt;
+ ++cp;
+ }
+ for (; cnt==0 && i<4; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *)cp);
+ }
+
+ if ((rc = write_word(info, wp, SWAP(data))) != 0) {
+ return (rc);
+ }
+ wp += 4;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 4) {
+ data = 0;
+ for (i=0; i<4; ++i) {
+ data = (data << 8) | *src++;
+ }
+ if ((rc = write_word(info, wp, SWAP(data))) != 0) {
+ return (rc);
+ }
+ wp += 4;
+ cnt -= 4;
+ }
+
+ if (cnt == 0) {
+ return (0);
+ }
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
+ data = (data << 8) | *src++;
+ --cnt;
+ }
+ for (; i<4; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *)cp);
+ }
+
+ return (write_word(info, wp, SWAP(data)));
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+static int write_word (flash_info_t *info, ulong dest, ulong data)
+{
+ vu_long *addr = (vu_long*)(info->start[0]);
+ ulong start;
+ ulong rev;
+ int flag;
+ int i;
+
+ /* Check if Flash is (sufficiently) erased */
+ if ((*((vu_long *)dest) & data) != data) {
+ return (2);
+ }
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ addr[0x0555] = 0x00AA00AA;
+ addr[0x02AA] = 0x00550055;
+ addr[0x0555] = 0x00A000A0;
+
+ *((vu_long *)dest) = data;
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+
+ /* data polling for D7 */
+ start = get_timer (0);
+ while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
+ if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+ return (1);
+ }
+ }
+ return (0);
+}
diff --git a/board/xsengine/memsetup.S b/board/xsengine/memsetup.S
new file mode 100644
index 0000000..b947118
--- /dev/null
+++ b/board/xsengine/memsetup.S
@@ -0,0 +1,221 @@
+#include <config.h>
+#include <version.h>
+#include <asm/arch/pxa-regs.h>
+
+DRAM_SIZE: .long CFG_DRAM_SIZE
+
+.globl memsetup
+memsetup:
+
+ mov r10, lr
+
+/* ---- GPIO INITIALISATION ---- */
+/* Set up GPIO pins first (3 groups [31:0] [63:32] [80:64]) */
+
+ /* General purpose set registers */
+ ldr r0, =GPSR0
+ ldr r1, =CFG_GPSR0_VAL
+ str r1, [r0]
+ ldr r0, =GPSR1
+ ldr r1, =CFG_GPSR1_VAL
+ str r1, [r0]
+ ldr r0, =GPSR2
+ ldr r1, =CFG_GPSR2_VAL
+ str r1, [r0]
+
+ /* General purpose clear registers */
+ ldr r0, =GPCR0
+ ldr r1, =CFG_GPCR0_VAL
+ str r1, [r0]
+ ldr r0, =GPCR1
+ ldr r1, =CFG_GPCR1_VAL
+ str r1, [r0]
+ ldr r0, =GPCR2
+ ldr r1, =CFG_GPCR2_VAL
+ str r1, [r0]
+
+ /* General rising edge registers */
+ ldr r0, =GRER0
+ ldr r1, =CFG_GRER0_VAL
+ str r1, [r0]
+ ldr r0, =GRER1
+ ldr r1, =CFG_GRER1_VAL
+ str r1, [r0]
+ ldr r0, =GRER2
+ ldr r1, =CFG_GRER2_VAL
+ str r1, [r0]
+
+ /* General falling edge registers */
+ ldr r0, =GFER0
+ ldr r1, =CFG_GFER0_VAL
+ str r1, [r0]
+ ldr r0, =GFER1
+ ldr r1, =CFG_GFER1_VAL
+ str r1, [r0]
+ ldr r0, =GFER2
+ ldr r1, =CFG_GFER2_VAL
+ str r1, [r0]
+
+ /* General edge detect registers */
+ ldr r0, =GPDR0
+ ldr r1, =CFG_GPDR0_VAL
+ str r1, [r0]
+ ldr r0, =GPDR1
+ ldr r1, =CFG_GPDR1_VAL
+ str r1, [r0]
+ ldr r0, =GPDR2
+ ldr r1, =CFG_GPDR2_VAL
+ str r1, [r0]
+
+ /* General alternate function registers */
+ ldr r0, =GAFR0_L /* [0:15] */
+ ldr r1, =CFG_GAFR0_L_VAL
+ str r1, [r0]
+ ldr r0, =GAFR0_U /* [31:16] */
+ ldr r1, =CFG_GAFR0_U_VAL
+ str r1, [r0]
+ ldr r0, =GAFR1_L /* [47:32] */
+ ldr r1, =CFG_GAFR1_L_VAL
+ str r1, [r0]
+ ldr r0, =GAFR1_U /* [63:48] */
+ ldr r1, =CFG_GAFR1_U_VAL
+ str r1, [r0]
+ ldr r0, =GAFR2_L /* [79:64] */
+ ldr r1, =CFG_GAFR2_L_VAL
+ str r1, [r0]
+ ldr r0, =GAFR2_U /* [80] */
+ ldr r1, =CFG_GAFR2_U_VAL
+ str r1, [r0]
+
+ /* General purpose direction registers */
+ ldr r0, =GPDR0
+ ldr r1, =CFG_GPDR0_VAL
+ str r1, [r0]
+ ldr r0, =GPDR1
+ ldr r1, =CFG_GPDR1_VAL
+ str r1, [r0]
+ ldr r0, =GPDR2
+ ldr r1, =CFG_GPDR2_VAL
+ str r1, [r0]
+
+ /* Power manager sleep status */
+ ldr r0, =PSSR
+ ldr r1, =CFG_PSSR_VAL
+ str r1, [r0]
+
+/* ---- MEMORY INITIALISATION ---- */
+/* Initialize Memory Controller, see PXA250 Operating System Developer's Guide */
+/* pause for 200 uSecs- allow internal clocks to settle */
+ ldr r3, =OSCR /* reset the OS Timer Count to zero */
+ mov r2, #0
+ str r2, [r3]
+ ldr r4, =0x300 /* really 0x2E1 is about 200usec, so 0x300 should be plenty */
+1:
+ ldr r2, [r3]
+ cmp r4, r2
+ bgt 1b
+
+mem_init:
+/* get memory controller base address */
+ ldr r1, =MEMC_BASE
+
+/* ---- FLASH INITIALISATION ---- */
+/* Write MSC0 and read back to ensure data change is accepted by cpu */
+ ldr r2, =CFG_MSC0_VAL
+ str r2, [r1, #MSC0_OFFSET]
+ ldr r2, [r1, #MSC0_OFFSET]
+
+/* ---- SDRAM INITIALISATION ---- */
+/* get the MDREFR settings */
+ ldr r2, =CFG_MDREFR_VAL
+ str r2, [r1, #MDREFR_OFFSET]
+
+/* fetch platform value of MDCNFG */
+ ldr r2, =CFG_MDCNFG_VAL
+
+/* disable all sdram banks */
+ bic r2, r2, #(MDCNFG_DE0 | MDCNFG_DE1)
+ bic r2, r2, #(MDCNFG_DE2 | MDCNFG_DE3)
+
+/* write initial value of MDCNFG, w/o enabling sdram banks */
+ str r2, [r1, #MDCNFG_OFFSET]
+
+/* pause for 200 uSecs */
+ ldr r3, =OSCR /* reset the OS Timer Count to zero */
+ mov r2, #0
+ str r2, [r3]
+ ldr r4, =0x300 /* about 200 usec */
+1:
+ ldr r2, [r3]
+ cmp r4, r2
+ bgt 1b
+
+/* Access memory *not yet enabled* for CBR refresh cycles (8) */
+/* CBR is generated for all banks */
+
+ ldr r2, =CFG_DRAM_BASE
+ str r2, [r2]
+ str r2, [r2]
+ str r2, [r2]
+ str r2, [r2]
+ str r2, [r2]
+ str r2, [r2]
+ str r2, [r2]
+ str r2, [r2]
+
+/* get memory controller base address */
+ ldr r2, =MEMC_BASE
+
+/* Enable SDRAM bank 0 in MDCNFG register */
+ ldr r2, [r1, #MDCNFG_OFFSET]
+ orr r2, r2, #MDCNFG_DE0
+ str r2, [r1, #MDCNFG_OFFSET]
+
+/* write MDMRS to trigger an MSR command to all enabled SDRAM banks */
+ ldr r2, =CFG_MDMRS_VAL
+ str r2, [r1, #MDMRS_OFFSET]
+
+/* ---- INTERRUPT INITIALISATION ---- */
+/* Disable (mask) all interrupts at the interrupt controller */
+/* clear the interrupt level register (use IRQ, not FIQ) */
+ mov r1, #0
+ ldr r2, =ICLR
+ str r1, [r2]
+
+/* Set interrupt mask register */
+ ldr r1, =CFG_ICMR_VAL
+ ldr r2, =ICMR
+ str r1, [r2]
+
+/* ---- CLOCK INITIALISATION ---- */
+/* Disable the peripheral clocks, and set the core clock */
+
+/* Turn Off ALL on-chip peripheral clocks for re-configuration */
+ ldr r1, =CKEN
+ mov r2, #0
+ str r2, [r1]
+
+/* set core clocks */
+ ldr r2, =CFG_CCCR_VAL
+ ldr r1, =CCCR
+ str r2, [r1]
+
+#ifdef ENABLE32KHZ
+/* enable the 32Khz oscillator for RTC and PowerManager */
+ ldr r1, =OSCC
+ mov r2, #OSCC_OON
+ str r2, [r1]
+
+/* NOTE: spin here until OSCC.OOK get set, meaning the PLL has settled. */
+60:
+ ldr r2, [r1]
+ ands r2, r2, #1
+ beq 60b
+#endif
+
+/* Turn on needed clocks */
+ ldr r1, =CKEN
+ ldr r2, =CFG_CKEN_VAL
+ str r2, [r1]
+
+ mov pc, r10
diff --git a/board/xsengine/u-boot.lds b/board/xsengine/u-boot.lds
new file mode 100644
index 0000000..e0b0514
--- /dev/null
+++ b/board/xsengine/u-boot.lds
@@ -0,0 +1,55 @@
+/*
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+ . = 0x00000000;
+
+ . = ALIGN(4);
+ .text :
+ {
+ cpu/pxa/start.o (.text)
+ *(.text)
+ }
+
+ . = ALIGN(4);
+ .rodata : { *(.rodata) }
+
+ . = ALIGN(4);
+ .data : { *(.data) }
+
+ . = ALIGN(4);
+ .got : { *(.got) }
+
+ __u_boot_cmd_start = .;
+ .u_boot_cmd : { *(.u_boot_cmd) }
+ __u_boot_cmd_end = .;
+
+ . = ALIGN(4);
+ __bss_start = .;
+ .bss : { *(.bss) }
+ _end = .;
+}
diff --git a/board/xsengine/xsengine.c b/board/xsengine/xsengine.c
new file mode 100644
index 0000000..c33b6f0
--- /dev/null
+++ b/board/xsengine/xsengine.c
@@ -0,0 +1,65 @@
+/*
+ * (C) Copyright 2002
+ * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+
+int board_init (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ /* memory and cpu-speed are setup before relocation */
+ /* so we do _nothing_ here */
+
+ /* arch number */
+ gd->bd->bi_arch_number = 532;
+
+ /* adress of boot parameters */
+ gd->bd->bi_boot_params = 0xa0000100;
+
+ return 0;
+}
+
+int board_post_init (void)
+{
+ setenv ("stdout", "serial");
+ setenv ("stderr", "serial");
+ return 0;
+}
+
+int dram_init (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+ gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+ return 0;
+}