* Patch by Prakash Kumar, 27 Jun 2004:
Add support for the PXA250 based Intrinsyc Cerf board.
* Patch by Yasushi Shoji, 27 Jun 2004:
fix comment in include/common.h
diff --git a/board/cerf250/Makefile b/board/cerf250/Makefile
new file mode 100644
index 0000000..3ab97df
--- /dev/null
+++ b/board/cerf250/Makefile
@@ -0,0 +1,47 @@
+#
+# (C) Copyright 2000
+# 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 := cerf250.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 $(CPPFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+-include .depend
+
+#########################################################################
diff --git a/board/cerf250/cerf250.c b/board/cerf250/cerf250.c
new file mode 100644
index 0000000..63745b4
--- /dev/null
+++ b/board/cerf250/cerf250.c
@@ -0,0 +1,75 @@
+/*
+ * (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 of cerf PXA Board */
+ gd->bd->bi_arch_number = 139;
+
+ /* adress of boot parameters */
+ gd->bd->bi_boot_params = 0xa0000100;
+
+ return 0;
+}
+
+int board_late_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;
+ gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
+ gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
+ gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
+ gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE;
+ gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
+ gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE;
+
+ return 0;
+}
diff --git a/board/cerf250/config.mk b/board/cerf250/config.mk
new file mode 100644
index 0000000..1a86cc9
--- /dev/null
+++ b/board/cerf250/config.mk
@@ -0,0 +1,5 @@
+#
+# Cerf board with PXA250 cpu
+#
+#
+TEXT_BASE = 0xa3080000
diff --git a/board/cerf250/flash.c b/board/cerf250/flash.c
new file mode 100644
index 0000000..ba82892
--- /dev/null
+++ b/board/cerf250/flash.c
@@ -0,0 +1,431 @@
+/*
+ * (C) Copyright 2001
+ * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
+ *
+ * (C) Copyright 2001
+ * 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>
+
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+/* Board support for 1 or 2 flash devices */
+#define FLASH_PORT_WIDTH32
+#undef FLASH_PORT_WIDTH16
+
+#ifdef FLASH_PORT_WIDTH16
+#define FLASH_PORT_WIDTH ushort
+#define FLASH_PORT_WIDTHV vu_short
+#define SWAP(x) __swab16(x)
+#else
+#define FLASH_PORT_WIDTH ulong
+#define FLASH_PORT_WIDTHV vu_long
+#define SWAP(x) __swab32(x)
+#endif
+
+#define FPW FLASH_PORT_WIDTH
+#define FPWV FLASH_PORT_WIDTHV
+
+#define mb() __asm__ __volatile__ ("" : : : "memory")
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static ulong flash_get_size (FPW *addr, flash_info_t *info);
+static int write_data (flash_info_t *info, ulong dest, FPW data);
+static void flash_get_offsets (ulong base, flash_info_t *info);
+void inline spin_wheel (void);
+
+/*-----------------------------------------------------------------------
+ */
+
+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 ((FPW *) PHYS_FLASH_1, &flash_info[i]);
+ flash_get_offsets (PHYS_FLASH_1, &flash_info[i]);
+ break;
+ case 1:
+ flash_get_size ((FPW *) 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_INTEL) {
+ 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_INTEL:
+ printf ("INTEL ");
+ break;
+ default:
+ printf ("Unknown Vendor ");
+ break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ case FLASH_28F128J3A:
+ printf ("28F128J3A\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 (FPW *addr, flash_info_t *info)
+{
+ volatile FPW value;
+
+ /* Write auto select command: read Manufacturer ID */
+ addr[0x5555] = (FPW) 0x00AA00AA;
+ addr[0x2AAA] = (FPW) 0x00550055;
+ addr[0x5555] = (FPW) 0x00900090;
+
+ mb ();
+ value = addr[0];
+
+ switch (value) {
+
+ case (FPW) INTEL_MANUFACT:
+ info->flash_id = FLASH_MAN_INTEL;
+ break;
+
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ info->sector_count = 0;
+ info->size = 0;
+ addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
+ return (0); /* no or unknown flash */
+ }
+
+ mb ();
+ value = addr[1]; /* device ID */
+
+ switch (value) {
+
+ case (FPW) INTEL_ID_28F128J3A:
+ info->flash_id += FLASH_28F128J3A;
+ info->sector_count = 128;
+ info->size = 0x02000000;
+ break; /* => 16 MB */
+
+ default:
+ info->flash_id = FLASH_UNKNOWN;
+ break;
+ }
+
+ if (info->sector_count > CFG_MAX_FLASH_SECT) {
+ printf ("** ERROR: sector count %d > max (%d) **\n",
+ info->sector_count, CFG_MAX_FLASH_SECT);
+ info->sector_count = CFG_MAX_FLASH_SECT;
+ }
+
+ addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
+
+ return (info->size);
+}
+
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ int flag, prot, sect;
+ ulong type, start, last;
+ int rcode = 0;
+
+ 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;
+ }
+
+ type = (info->flash_id & FLASH_VENDMASK);
+ if ((type != FLASH_MAN_INTEL)) {
+ 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");
+ }
+
+ start = get_timer (0);
+ last = start;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts ();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect <= s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ FPWV *addr = (FPWV *) (info->start[sect]);
+ FPW status;
+
+ printf ("Erasing sector %2d ... ", sect);
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked ();
+
+ *addr = (FPW) 0x00500050; /* clear status register */
+ *addr = (FPW) 0x00200020; /* erase setup */
+ *addr = (FPW) 0x00D000D0; /* erase confirm */
+
+ while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
+ if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
+ printf ("Timeout\n");
+ *addr = (FPW) 0x00B000B0; /* suspend erase */
+ *addr = (FPW) 0x00FF00FF; /* reset to read mode */
+ rcode = 1;
+ break;
+ }
+ }
+
+ *addr = 0x00500050; /* clear status register cmd. */
+ *addr = 0x00FF00FF; /* resest to read mode */
+
+ printf (" done\n");
+ }
+ }
+ return rcode;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ * 4 - Flash not identified
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+ ulong cp, wp;
+ FPW data;
+ int count, i, l, rc, port_width;
+
+ if (info->flash_id == FLASH_UNKNOWN) {
+ return 4;
+ }
+/* get lower word aligned address */
+#ifdef FLASH_PORT_WIDTH16
+ wp = (addr & ~1);
+ port_width = 2;
+#else
+ wp = (addr & ~3);
+ port_width = 4;
+#endif
+
+ /*
+ * 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 < port_width && cnt > 0; ++i) {
+ data = (data << 8) | *src++;
+ --cnt;
+ ++cp;
+ }
+ for (; cnt == 0 && i < port_width; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *) cp);
+ }
+
+ if ((rc = write_data (info, wp, SWAP (data))) != 0) {
+ return (rc);
+ }
+ wp += port_width;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ count = 0;
+ while (cnt >= port_width) {
+ data = 0;
+ for (i = 0; i < port_width; ++i) {
+ data = (data << 8) | *src++;
+ }
+ if ((rc = write_data (info, wp, SWAP (data))) != 0) {
+ return (rc);
+ }
+ wp += port_width;
+ cnt -= port_width;
+ if (count++ > 0x800) {
+ spin_wheel ();
+ count = 0;
+ }
+ }
+
+ if (cnt == 0) {
+ return (0);
+ }
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
+ data = (data << 8) | *src++;
+ --cnt;
+ }
+ for (; i < port_width; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *) cp);
+ }
+
+ return (write_data (info, wp, SWAP (data)));
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word or halfword to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+static int write_data (flash_info_t *info, ulong dest, FPW data)
+{
+ FPWV *addr = (FPWV *) dest;
+ ulong status;
+ int flag;
+
+ /* Check if Flash is (sufficiently) erased */
+ if ((*addr & data) != data) {
+ printf ("not erased at %08lx (%lx)\n", (ulong) addr, *addr);
+ return (2);
+ }
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts ();
+
+ *addr = (FPW) 0x00400040; /* write setup */
+ *addr = data;
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked ();
+
+ /* wait while polling the status register */
+ while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
+ if (get_timer_masked () > CFG_FLASH_WRITE_TOUT) {
+ *addr = (FPW) 0x00FF00FF; /* restore read mode */
+ return (1);
+ }
+ }
+
+ *addr = (FPW) 0x00FF00FF; /* restore read mode */
+
+ return (0);
+}
+
+void inline spin_wheel (void)
+{
+ static int p = 0;
+ static char w[] = "\\/-";
+
+ printf ("\010%c", w[p]);
+ (++p == 3) ? (p = 0) : 0;
+}
diff --git a/board/cerf250/memsetup.S b/board/cerf250/memsetup.S
new file mode 100644
index 0000000..f3d373a
--- /dev/null
+++ b/board/cerf250/memsetup.S
@@ -0,0 +1,411 @@
+/*
+ * Most of this taken from Redboot hal_platform_setup.h with cleanup
+ *
+ * NOTE: I haven't clean this up considerably, just enough to get it
+ * running. See hal_platform_setup.h for the source. See
+ * board/cradle/memsetup.S for another PXA250 setup that is
+ * much cleaner.
+ *
+ * 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 <config.h>
+#include <version.h>
+#include <asm/arch/pxa-regs.h>
+
+DRAM_SIZE: .long CFG_DRAM_SIZE
+
+/* wait for coprocessor write complete */
+ .macro CPWAIT reg
+ mrc p15,0,\reg,c2,c0,0
+ mov \reg,\reg
+ sub pc,pc,#4
+ .endm
+
+
+/*
+ * Memory setup
+ */
+
+.globl memsetup
+memsetup:
+
+ /* Set up GPIO pins first ----------------------------------------- */
+
+ 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]
+
+ 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]
+
+ 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]
+
+ ldr r0, =GAFR0_L
+ ldr r1, =CFG_GAFR0_L_VAL
+ str r1, [r0]
+
+ ldr r0, =GAFR0_U
+ ldr r1, =CFG_GAFR0_U_VAL
+ str r1, [r0]
+
+ ldr r0, =GAFR1_L
+ ldr r1, =CFG_GAFR1_L_VAL
+ str r1, [r0]
+
+ ldr r0, =GAFR1_U
+ ldr r1, =CFG_GAFR1_U_VAL
+ str r1, [r0]
+
+ ldr r0, =GAFR2_L
+ ldr r1, =CFG_GAFR2_L_VAL
+ str r1, [r0]
+
+ ldr r0, =GAFR2_U
+ ldr r1, =CFG_GAFR2_U_VAL
+ str r1, [r0]
+
+ ldr r0, =PSSR /* enable GPIO pins */
+ ldr r1, =CFG_PSSR_VAL
+ str r1, [r0]
+
+ /* ---------------------------------------------------------------- */
+ /* Enable memory interface */
+ /* */
+ /* The sequence below is based on the recommended init steps */
+ /* detailed in the Intel PXA250 Operating Systems Developers Guide, */
+ /* Chapter 10. */
+ /* ---------------------------------------------------------------- */
+
+ /* ---------------------------------------------------------------- */
+ /* Step 1: Wait for at least 200 microsedonds to allow internal */
+ /* clocks to settle. Only necessary after hard reset... */
+ /* FIXME: can be optimized later */
+ /* ---------------------------------------------------------------- */
+
+ 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:
+
+ ldr r1, =MEMC_BASE /* get memory controller base addr. */
+
+ /* ---------------------------------------------------------------- */
+ /* Step 2a: Initialize Asynchronous static memory controller */
+ /* ---------------------------------------------------------------- */
+
+ /* MSC registers: timing, bus width, mem type */
+
+ /* MSC0: nCS(0,1) */
+ ldr r2, =CFG_MSC0_VAL
+ str r2, [r1, #MSC0_OFFSET]
+ ldr r2, [r1, #MSC0_OFFSET] /* read back to ensure */
+ /* that data latches */
+ /* MSC1: nCS(2,3) */
+ ldr r2, =CFG_MSC1_VAL
+ str r2, [r1, #MSC1_OFFSET]
+ ldr r2, [r1, #MSC1_OFFSET]
+
+ /* MSC2: nCS(4,5) */
+ ldr r2, =CFG_MSC2_VAL
+ str r2, [r1, #MSC2_OFFSET]
+ ldr r2, [r1, #MSC2_OFFSET]
+
+ /* ---------------------------------------------------------------- */
+ /* Step 2b: Initialize Card Interface */
+ /* ---------------------------------------------------------------- */
+
+ /* MECR: Memory Expansion Card Register */
+ ldr r2, =CFG_MECR_VAL
+ str r2, [r1, #MECR_OFFSET]
+ ldr r2, [r1, #MECR_OFFSET]
+
+ /* MCMEM0: Card Interface slot 0 timing */
+ ldr r2, =CFG_MCMEM0_VAL
+ str r2, [r1, #MCMEM0_OFFSET]
+ ldr r2, [r1, #MCMEM0_OFFSET]
+
+ /* MCMEM1: Card Interface slot 1 timing */
+ ldr r2, =CFG_MCMEM1_VAL
+ str r2, [r1, #MCMEM1_OFFSET]
+ ldr r2, [r1, #MCMEM1_OFFSET]
+
+ /* MCATT0: Card Interface Attribute Space Timing, slot 0 */
+ ldr r2, =CFG_MCATT0_VAL
+ str r2, [r1, #MCATT0_OFFSET]
+ ldr r2, [r1, #MCATT0_OFFSET]
+
+ /* MCATT1: Card Interface Attribute Space Timing, slot 1 */
+ ldr r2, =CFG_MCATT1_VAL
+ str r2, [r1, #MCATT1_OFFSET]
+ ldr r2, [r1, #MCATT1_OFFSET]
+
+ /* MCIO0: Card Interface I/O Space Timing, slot 0 */
+ ldr r2, =CFG_MCIO0_VAL
+ str r2, [r1, #MCIO0_OFFSET]
+ ldr r2, [r1, #MCIO0_OFFSET]
+
+ /* MCIO1: Card Interface I/O Space Timing, slot 1 */
+ ldr r2, =CFG_MCIO1_VAL
+ str r2, [r1, #MCIO1_OFFSET]
+ ldr r2, [r1, #MCIO1_OFFSET]
+
+ /* ---------------------------------------------------------------- */
+ /* Step 2c: Write FLYCNFG FIXME: what's that??? */
+ /* ---------------------------------------------------------------- */
+
+
+ /* ---------------------------------------------------------------- */
+ /* Step 2d: Initialize Timing for Sync Memory (SDCLK0) */
+ /* ---------------------------------------------------------------- */
+
+ /* Before accessing MDREFR we need a valid DRI field, so we set */
+ /* this to power on defaults + DRI field, set SDRAM clocks free running */
+
+ ldr r3, =CFG_MDREFR_VAL
+ ldr r2, =0xFFF
+ and r3, r3, r2
+
+ ldr r0, [r1, #MDREFR_OFFSET]
+ bic r0, r0, r2
+ bic r0, r0, #(MDREFR_K0FREE|MDREFR_K1FREE|MDREFR_K2FREE)
+ orr r0, r0, r3
+
+ str r0, [r1, #MDREFR_OFFSET] /* write back MDREFR */
+
+
+ /* ---------------------------------------------------------------- */
+ /* Step 3: Initialize Synchronous Static Memory (Flash/Peripherals) */
+ /* ---------------------------------------------------------------- */
+
+ /* Initialize SXCNFG register. Assert the enable bits */
+
+ /* Write SXMRS to cause an MRS command to all enabled banks of */
+ /* synchronous static memory. Note that SXLCR need not be written */
+ /* at this time. */
+
+ /* FIXME: we use async mode for now */
+
+
+ /* ---------------------------------------------------------------- */
+ /* Step 4: Initialize SDRAM */
+ /* ---------------------------------------------------------------- */
+
+ /* set MDREFR according to user define with exception of a few bits */
+
+ ldr r4, =CFG_MDREFR_VAL
+ ldr r2, =(MDREFR_K0RUN|MDREFR_K0DB2|MDREFR_K1RUN|MDREFR_K1DB2|\
+ MDREFR_K2RUN |MDREFR_K2DB2)
+ and r4, r4, r2
+ bic r0, r0, r2
+ orr r0, r0, r4
+
+ str r0, [r1, #MDREFR_OFFSET] /* write back MDREFR */
+ ldr r0, [r1, #MDREFR_OFFSET]
+
+ /* Step 4b: de-assert MDREFR:SLFRSH. */
+
+ bic r0, r0, #(MDREFR_SLFRSH)
+ str r0, [r1, #MDREFR_OFFSET] /* write back MDREFR */
+ ldr r0, [r1, #MDREFR_OFFSET]
+
+
+ /* Step 4c: assert MDREFR:E1PIN and E0PIO as desired, set KXFREE */
+
+ ldr r4, =CFG_MDREFR_VAL
+ ldr r2, =(MDREFR_E0PIN|MDREFR_E1PIN|MDREFR_K0FREE| \
+ MDREFR_K1FREE | MDREFR_K2FREE)
+ and r4, r4, r2
+ orr r0, r0, r4
+ str r0, [r1, #MDREFR_OFFSET] /* write back MDREFR */
+ ldr r0, [r1, #MDREFR_OFFSET]
+
+
+ /* Step 4d: write MDCNFG with MDCNFG:DEx deasserted (set to 0), to */
+ /* configure but not enable each SDRAM partition pair. */
+
+ ldr r4, =CFG_MDCNFG_VAL
+ bic r4, r4, #(MDCNFG_DE0|MDCNFG_DE1)
+ bic r4, r4, #(MDCNFG_DE2|MDCNFG_DE3)
+ str r4, [r1, #MDCNFG_OFFSET] /* write back MDCNFG */
+ ldr r4, [r1, #MDCNFG_OFFSET]
+
+
+ /* Step 4e: Wait for the clock to the SDRAMs to stabilize, */
+ /* 100..200 µsec. */
+
+ 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
+
+
+ /* Step 4f: Trigger a number (usually 8) refresh cycles by */
+ /* attempting non-burst read or write accesses to disabled */
+ /* SDRAM, as commonly specified in the power up sequence */
+ /* documented in SDRAM data sheets. The address(es) used */
+ /* for this purpose must not be cacheable. */
+
+ ldr r3, =CFG_DRAM_BASE
+.rept 8
+ str r2, [r3]
+.endr
+
+ /* Step 4g: Write MDCNFG with enable bits asserted */
+ /* (MDCNFG:DEx set to 1). */
+
+ ldr r3, [r1, #MDCNFG_OFFSET]
+ orr r3, r3, #(MDCNFG_DE0|MDCNFG_DE1)
+ str r3, [r1, #MDCNFG_OFFSET]
+
+ /* Step 4h: Write MDMRS. */
+
+ ldr r2, =CFG_MDMRS_VAL
+ str r2, [r1, #MDMRS_OFFSET]
+
+
+ /* We are finished with Intel's memory controller initialisation */
+
+
+ /* ---------------------------------------------------------------- */
+ /* Disable (mask) all interrupts at interrupt controller */
+ /* ---------------------------------------------------------------- */
+
+initirqs:
+
+ mov r1, #0 /* clear int. level register (IRQ, not FIQ) */
+ ldr r2, =ICLR
+ str r1, [r2]
+
+ ldr r2, =ICMR /* mask all interrupts at the controller */
+ str r1, [r2]
+
+
+ /* ---------------------------------------------------------------- */
+ /* Clock initialisation */
+ /* ---------------------------------------------------------------- */
+
+initclks:
+
+ /* Disable the peripheral clocks, and set the core clock frequency */
+
+ /* Turn Off ALL on-chip peripheral clocks for re-configuration */
+ /* Note: See label 'ENABLECLKS' for the re-enabling */
+ ldr r1, =CKEN
+ mov r2, #0
+ str r2, [r1]
+
+
+ /* default value in case no valid rotary switch setting is found */
+ ldr r2, =(CCCR_L27|CCCR_M2|CCCR_N10) /* DEFAULT: {200/200/100} */
+
+ /* ... and write the core clock config register */
+ ldr r1, =CCCR
+ str r2, [r1]
+
+#ifdef RTC
+ /* 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
+
+ /* ---------------------------------------------------------------- */
+ /* */
+ /* ---------------------------------------------------------------- */
+
+ /* Save SDRAM size */
+ ldr r1, =DRAM_SIZE
+ str r8, [r1]
+
+ /* Interrupt init: Mask all interrupts */
+ ldr r0, =ICMR /* enable no sources */
+ mov r1, #0
+ str r1, [r0]
+
+ /* FIXME */
+
+#define NODEBUG
+#ifdef NODEBUG
+ /*Disable software and data breakpoints */
+ mov r0,#0
+ mcr p15,0,r0,c14,c8,0 /* ibcr0 */
+ mcr p15,0,r0,c14,c9,0 /* ibcr1 */
+ mcr p15,0,r0,c14,c4,0 /* dbcon */
+
+ /*Enable all debug functionality */
+ mov r0,#0x80000000
+ mcr p14,0,r0,c10,c0,0 /* dcsr */
+
+#endif
+
+ /* ---------------------------------------------------------------- */
+ /* End memsetup */
+ /* ---------------------------------------------------------------- */
+
+endmemsetup:
+
+ mov pc, lr
diff --git a/board/cerf250/u-boot.lds b/board/cerf250/u-boot.lds
new file mode 100644
index 0000000..58c371d
--- /dev/null
+++ b/board/cerf250/u-boot.lds
@@ -0,0 +1,55 @@
+/*
+ * (C) Copyright 2000
+ * 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 = .;
+}