ppc4xx: Add AMCC Canyonlands support (460EX) (1/3)

This patch adds support for the AMCC Canyonlands 460EX evaluation
board.
Signed-off-by: NStefan Roese <sr@denx.de>

board/amcc/canyonlands/Makefile

+#
+# (C) Copyright 2008
+# Stefan Roese, DENX Software Engineering, sr@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	= $(obj)lib$(BOARD).a
+
+COBJS	:= $(BOARD).o
+COBJS	+= bootstrap.o
+SOBJS	:= init.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

board/amcc/canyonlands/bootstrap.c

+/*
+ * (C) Copyright 2008
+ * Stefan Roese, DENX Software Engineering, sr@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 <command.h>
+#include <i2c.h>
+#include <asm/io.h>
+
+/*
+ * NOR and NAND boot options change bytes 6, 7, 8, 9, 11. The
+ * values are independent of the rest of the clock settings.
+ */
+
+#define NAND_COMPATIBLE	0x01
+#define NOR_COMPATIBLE  0x02
+
+#define I2C_EEPROM_ADDR 0x52
+
+static char *config_labels[] = {
+	"CPU: 600 PLB: 200 OPB: 100 EBC: 100",
+	"CPU: 800 PLB: 200 OPB: 100 EBC: 100",
+	NULL
+};
+
+static u8 boot_configs[][17] = {
+	{
+		(NOR_COMPATIBLE),
+		0x86, 0x80, 0xce, 0x1f, 0x79, 0x80, 0x00, 0xa0, 0x40, 0x08,
+		0x23, 0x50, 0x0d, 0x95, 0x00, 0x00
+	},
+	{
+		(NOR_COMPATIBLE),
+		0x86, 0x80, 0xba, 0x14, 0x99, 0x80, 0x00, 0xa0, 0x40, 0x08,
+		0x23, 0x50, 0x0d, 0x95, 0x00, 0x00
+	},
+	{
+		0,
+		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+	}
+};
+
+/*
+ * Bytes 6,8,9,11 change for NAND boot
+ */
+static u8 nand_boot[] = {
+	0xd0,  0xa0, 0x68, 0x58
+};
+
+static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	u8 *buf, b_nand;
+	int x, y, nbytes, selcfg;
+	extern char console_buffer[];
+
+	if (argc < 2) {
+		printf("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if ((strcmp(argv[1], "nor") != 0) &&
+	    (strcmp(argv[1], "nand") != 0)) {
+		printf("Unsupported boot-device - only nor|nand support\n");
+		return 1;
+	}
+
+	/* set the nand flag based on provided input */
+	if ((strcmp(argv[1], "nand") == 0))
+		b_nand = 1;
+	else
+		b_nand = 0;
+
+	printf("Available configurations: \n\n");
+
+	if (b_nand) {
+		for(x = 0, y = 0; boot_configs[x][0] != 0; x++) {
+			/* filter on nand compatible */
+			if (boot_configs[x][0] & NAND_COMPATIBLE) {
+				printf(" %d - %s\n", (y+1), config_labels[x]);
+				y++;
+			}
+		}
+	} else {
+		for(x = 0, y = 0; boot_configs[x][0] != 0; x++) {
+			/* filter on nor compatible */
+			if (boot_configs[x][0] & NOR_COMPATIBLE) {
+				printf(" %d - %s\n", (y+1), config_labels[x]);
+				y++;
+			}
+		}
+	}
+
+	do {
+		nbytes = readline(" Selection [1-x / quit]: ");
+
+		if (nbytes) {
+			if (strcmp(console_buffer, "quit") == 0)
+				return 0;
+			selcfg = simple_strtol(console_buffer, NULL, 10);
+			if ((selcfg < 1) || (selcfg > y))
+				nbytes = 0;
+		}
+	} while (nbytes == 0);
+
+
+	y = (selcfg - 1);
+
+	for (x = 0; boot_configs[x][0] != 0; x++) {
+		if (b_nand) {
+			if (boot_configs[x][0] & NAND_COMPATIBLE) {
+				if (y > 0)
+					y--;
+				else if (y < 1)
+					break;
+			}
+		} else {
+			if (boot_configs[x][0] & NOR_COMPATIBLE) {
+				if (y > 0)
+					y--;
+				else if (y < 1)
+					break;
+			}
+		}
+	}
+
+	buf = &boot_configs[x][1];
+
+	if (b_nand) {
+		buf[6] = nand_boot[0];
+		buf[8] = nand_boot[1];
+		buf[9] = nand_boot[2];
+		buf[11] = nand_boot[3];
+	}
+
+	if (i2c_write(I2C_EEPROM_ADDR, 0, 1, buf, 16) != 0)
+		printf("Error writing to EEPROM at address 0x%x\n", I2C_EEPROM_ADDR);
+	udelay(CFG_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
+
+	printf("Done\n");
+	printf("Please power-cycle the board for the changes to take effect\n");
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	bootstrap,	2,	0,	do_bootstrap,
+	"bootstrap - program the I2C bootstrap EEPROM\n",
+	"<nand|nor> - strap to boot from NAND or NOR flash\n"
+	);

board/amcc/canyonlands/canyonlands.c

+/*
+ * (C) Copyright 2008
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * 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 <ppc440.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/mmu.h>
+#include <asm/4xx_pcie.h>
+
+extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_early_init_f(void)
+{
+	u32 sdr0_cust0;
+
+	/*------------------------------------------------------------------+
+	 * Setup the interrupt controller polarities, triggers, etc.
+	 *------------------------------------------------------------------*/
+	mtdcr(uic0sr, 0xffffffff);	/* clear all */
+	mtdcr(uic0er, 0x00000000);	/* disable all */
+	mtdcr(uic0cr, 0x00000005);	/* ATI & UIC1 crit are critical */
+	mtdcr(uic0pr, 0xffffffff);	/* per ref-board manual */
+	mtdcr(uic0tr, 0x00000000);	/* per ref-board manual */
+	mtdcr(uic0vr, 0x00000000);	/* int31 highest, base=0x000 */
+	mtdcr(uic0sr, 0xffffffff);	/* clear all */
+
+	mtdcr(uic1sr, 0xffffffff);	/* clear all */
+	mtdcr(uic1er, 0x00000000);	/* disable all */
+	mtdcr(uic1cr, 0x00000000);	/* all non-critical */
+	mtdcr(uic1pr, 0xffffffff);	/* per ref-board manual */
+	mtdcr(uic1tr, 0x00000000);	/* per ref-board manual */
+	mtdcr(uic1vr, 0x00000000);	/* int31 highest, base=0x000 */
+	mtdcr(uic1sr, 0xffffffff);	/* clear all */
+
+	mtdcr(uic2sr, 0xffffffff);	/* clear all */
+	mtdcr(uic2er, 0x00000000);	/* disable all */
+	mtdcr(uic2cr, 0x00000000);	/* all non-critical */
+	mtdcr(uic2pr, 0xffffffff);	/* per ref-board manual */
+	mtdcr(uic2tr, 0x00000000);	/* per ref-board manual */
+	mtdcr(uic2vr, 0x00000000);	/* int31 highest, base=0x000 */
+	mtdcr(uic2sr, 0xffffffff);	/* clear all */
+
+	mtdcr(uic3sr, 0xffffffff);	/* clear all */
+	mtdcr(uic3er, 0x00000000);	/* disable all */
+	mtdcr(uic3cr, 0x00000000);	/* all non-critical */
+	mtdcr(uic3pr, 0xffffffff);	/* per ref-board manual */
+	mtdcr(uic3tr, 0x00000000);	/* per ref-board manual */
+	mtdcr(uic3vr, 0x00000000);	/* int31 highest, base=0x000 */
+	mtdcr(uic3sr, 0xffffffff);	/* clear all */
+
+	/* SDR Setting - enable NDFC */
+	mfsdr(SDR0_CUST0, sdr0_cust0);
+	sdr0_cust0 = SDR0_CUST0_MUX_NDFC_SEL	|
+		SDR0_CUST0_NDFC_ENABLE		|
+		SDR0_CUST0_NDFC_BW_8_BIT	|
+		SDR0_CUST0_NDFC_ARE_MASK	|
+		SDR0_CUST0_NDFC_BAC_ENCODE(3)	|
+		(0x80000000 >> (28 + CFG_NAND_CS));
+	mtsdr(SDR0_CUST0, sdr0_cust0);
+
+	/*
+	 * Configure PFC (Pin Function Control) registers
+	 * UART0: 4 pins
+	 */
+	mtsdr(SDR0_PFC1, 0x00040000);
+
+	/* Enable PCI host functionality in SDR0_PCI0 */
+	mtsdr(SDR0_PCI0, 0xe0000000);
+
+	/* Enable ethernet and take out of reset */
+	out_8((void *)CFG_BCSR_BASE + 6, 0);
+
+	/* Remove NOR-FLASH, NAND-FLASH & EEPROM hardware write protection */
+	out_8((void *)CFG_BCSR_BASE + 5, 0);
+
+	/* Enable USB host & USB-OTG */
+	out_8((void *)CFG_BCSR_BASE + 7, 0);
+
+	mtsdr(SDR0_SRST1, 0);	/* Pull AHB out of reset default=1 */
+
+	return 0;
+}
+
+int checkboard (void)
+{
+	char *s = getenv("serial#");
+	u32 pvr = get_pvr();
+
+	if ((pvr == PVR_460GT_RA) || (pvr == PVR_460GT_SE_RA))
+		printf("Board: Glacier - AMCC PPC460GT Evaluation Board");
+	else
+		printf("Board: Canyonlands - AMCC PPC460EX Evaluation Board");
+
+	if (s != NULL) {
+		puts(", serial# ");
+		puts(s);
+	}
+	putc('\n');
+
+	return (0);
+}
+
+/*
+ * Override the default functions in cpu/ppc4xx/44x_spd_ddr2.c with
+ * board specific values.
+ */
+u32 ddr_wrdtr(u32 default_val) {
+	return (SDRAM_WRDTR_LLWP_1_CYC | SDRAM_WRDTR_WTR_180_DEG_ADV | 0x823);
+}
+
+u32 ddr_clktr(u32 default_val) {
+	return (SDRAM_CLKTR_CLKP_90_DEG_ADV);
+}
+
+#if defined(CFG_DRAM_TEST)
+int testdram(void)
+{
+	unsigned long *mem = (unsigned long *)0;
+	const unsigned long kend = (1024 / sizeof(unsigned long));
+	unsigned long k, n;
+
+	mtmsr(0);
+
+	for (k = 0; k < CFG_KBYTES_SDRAM;
+	     ++k, mem += (1024 / sizeof(unsigned long))) {
+		if ((k & 1023) == 0) {
+			printf("%3d MB\r", k / 1024);
+		}
+
+		memset(mem, 0xaaaaaaaa, 1024);
+		for (n = 0; n < kend; ++n) {
+			if (mem[n] != 0xaaaaaaaa) {
+				printf("SDRAM test fails at: %08x\n",
+				       (uint) & mem[n]);
+				return 1;
+			}
+		}
+
+		memset(mem, 0x55555555, 1024);
+		for (n = 0; n < kend; ++n) {
+			if (mem[n] != 0x55555555) {
+				printf("SDRAM test fails at: %08x\n",
+				       (uint) & mem[n]);
+				return 1;
+			}
+		}
+	}
+	printf("SDRAM test passes\n");
+	return 0;
+}
+#endif
+
+/*************************************************************************
+ *  pci_target_init
+ *
+ *	The bootstrap configuration provides default settings for the pci
+ *	inbound map (PIM). But the bootstrap config choices are limited and
+ *	may not be sufficient for a given board.
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
+void pci_target_init(struct pci_controller * hose )
+{
+	/*-------------------------------------------------------------------+
+	 * Disable everything
+	 *-------------------------------------------------------------------*/
+	out_le32((void *)PCIX0_PIM0SA, 0); /* disable */
+	out_le32((void *)PCIX0_PIM1SA, 0); /* disable */
+	out_le32((void *)PCIX0_PIM2SA, 0); /* disable */
+	out_le32((void *)PCIX0_EROMBA, 0); /* disable expansion rom */
+
+	/*-------------------------------------------------------------------+
+	 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440
+	 * strapping options to not support sizes such as 128/256 MB.
+	 *-------------------------------------------------------------------*/
+	out_le32((void *)PCIX0_PIM0LAL, CFG_SDRAM_BASE);
+	out_le32((void *)PCIX0_PIM0LAH, 0);
+	out_le32((void *)PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1);
+	out_le32((void *)PCIX0_BAR0, 0);
+
+	/*-------------------------------------------------------------------+
+	 * Program the board's subsystem id/vendor id
+	 *-------------------------------------------------------------------*/
+	out_le16((void *)PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID);
+	out_le16((void *)PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID);
+
+	out_le16((void *)PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY);
+}
+#endif	/* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
+
+#if defined(CONFIG_PCI)
+/*
+ * is_pci_host
+ *
+ * This routine is called to determine if a pci scan should be
+ * performed. With various hardware environments (especially cPCI and
+ * PPMC) it's insufficient to depend on the state of the arbiter enable
+ * bit in the strap register, or generic host/adapter assumptions.
+ *
+ * Rather than hard-code a bad assumption in the general 440 code, the
+ * 440 pci code requires the board to decide at runtime.
+ *
+ * Return 0 for adapter mode, non-zero for host (monarch) mode.
+ */
+int is_pci_host(struct pci_controller *hose)
+{
+	/* Board is always configured as host. */
+	return (1);
+}
+
+static struct pci_controller pcie_hose[2] = {{0},{0}};
+
+void pcie_setup_hoses(int busno)
+{
+	struct pci_controller *hose;
+	int i, bus;
+	int ret = 0;
+	char *env;
+	unsigned int delay;
+
+	/*
+	 * assume we're called after the PCIX hose is initialized, which takes
+	 * bus ID 0 and therefore start numbering PCIe's from 1.
+	 */
+	bus = busno;
+	for (i = 0; i <= 1; i++) {
+
+		if (is_end_point(i))
+			ret = ppc4xx_init_pcie_endport(i);
+		else
+			ret = ppc4xx_init_pcie_rootport(i);
+		if (ret) {
+			printf("PCIE%d: initialization as %s failed\n", i,
+			       is_end_point(i) ? "endpoint" : "root-complex");
+			continue;
+		}
+
+		hose = &pcie_hose[i];
+		hose->first_busno = bus;
+		hose->last_busno = bus;
+		hose->current_busno = bus;
+
+		/* setup mem resource */
+		pci_set_region(hose->regions + 0,
+			       CFG_PCIE_MEMBASE + i * CFG_PCIE_MEMSIZE,
+			       CFG_PCIE_MEMBASE + i * CFG_PCIE_MEMSIZE,
+			       CFG_PCIE_MEMSIZE,
+			       PCI_REGION_MEM);
+		hose->region_count = 1;
+		pci_register_hose(hose);
+
+		if (is_end_point(i)) {
+			ppc4xx_setup_pcie_endpoint(hose, i);
+			/*
+			 * Reson for no scanning is endpoint can not generate
+			 * upstream configuration accesses.
+			 */
+		} else {
+			ppc4xx_setup_pcie_rootpoint(hose, i);
+			env = getenv ("pciscandelay");
+			if (env != NULL) {
+				delay = simple_strtoul(env, NULL, 10);
+				if (delay > 5)
+					printf("Warning, expect noticable delay before "
+					       "PCIe scan due to 'pciscandelay' value!\n");
+				mdelay(delay * 1000);
+			}
+
+			/*
+			 * Config access can only go down stream
+			 */
+			hose->last_busno = pci_hose_scan(hose);
+			bus = hose->last_busno + 1;
+		}
+	}
+}
+#endif /* CONFIG_PCI */
+
+int board_early_init_r (void)
+{
+	/*
+	 * Canyonlands has 64MBytes of NOR FLASH (Spansion 29GL512), but the
+	 * boot EBC mapping only supports a maximum of 16MBytes
+	 * (4.ff00.0000 - 4.ffff.ffff).
+	 * To solve this problem, the FLASH has to get remapped to another
+	 * EBC address which accepts bigger regions:
+	 *
+	 * 0xfc00.0000 -> 4.cc00.0000
+	 *
+	 * For this we have to remap the CS0 and re-relocate the envrironment,
+	 * since the original FLASH location which was needed upon startup is
+	 * now not correct anymore.
+	 */
+
+	/* Remap the NOR FLASH to 0xcc00.0000 ... 0xcfff.ffff */
+	mtebc(pb0cr, CFG_FLASH_BASE_PHYS_L | 0xda000);
+
+	/* Remove TLB entry of boot EBC mapping */
+	remove_tlb(CFG_BOOT_BASE_ADDR, 16 << 20);
+
+	/* Add TLB entry for 0xfc00.0000 -> 0x4.cc00.0000 */
+	program_tlb(CFG_FLASH_BASE_PHYS, CFG_FLASH_BASE, CFG_FLASH_SIZE,
+		    TLB_WORD2_I_ENABLE);
+
+	/*
+	 * Now accessing of the whole 64Mbytes of NOR FLASH at virtual address
+	 * 0xfc00.0000 is possible
+	 */
+
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	u32 sdr0_srst1 = 0;
+	u32 eth_cfg;
+
+	/*
+	 * Set EMAC mode/configuration (GMII, SGMII, RGMII...).
+	 * This is board specific, so let's do it here.
+	 */
+	mfsdr(SDR0_ETH_CFG, eth_cfg);
+	/* disable SGMII mode */
+	eth_cfg &= ~(SDR0_ETH_CFG_SGMII2_ENABLE |
+		     SDR0_ETH_CFG_SGMII1_ENABLE |
+		     SDR0_ETH_CFG_SGMII0_ENABLE);
+	/* Set the for 2 RGMII mode */
+	/* GMC0 EMAC4_0, GMC0 EMAC4_1, RGMII Bridge 0 */
+	eth_cfg &= ~SDR0_ETH_CFG_GMC0_BRIDGE_SEL;
+	eth_cfg |= SDR0_ETH_CFG_GMC1_BRIDGE_SEL;
+	mtsdr(SDR0_ETH_CFG, eth_cfg);
+
+	/*
+	 * The AHB Bridge core is held in reset after power-on or reset
+	 * so enable it now
+	 */
+	mfsdr(SDR0_SRST1, sdr0_srst1);
+	sdr0_srst1 &= ~SDR0_SRST1_AHB;
+	mtsdr(SDR0_SRST1, sdr0_srst1);
+
+	return 0;
+}
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	u32 val[4];
+	int rc;
+
+	ft_cpu_setup(blob, bd);
+
+	/* Fixup NOR mapping */
+	val[0] = 0;				/* chip select number */
+	val[1] = 0;				/* always 0 */
+	val[2] = gd->bd->bi_flashstart;
+	val[3] = gd->bd->bi_flashsize;
+	rc = fdt_find_and_setprop(blob, "/plb/opb/ebc", "ranges",
+				  val, sizeof(val), 1);
+	if (rc)
+		printf("Unable to update property NOR mapping, err=%s\n",
+		       fdt_strerror(rc));
+}
+#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */

board/amcc/canyonlands/config.mk

+#
+# (C) Copyright 2008
+# 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
+#
+#
+# AMCC 460EX/460GT Evaluation Board (Canyonlands) board
+#
+
+sinclude $(TOPDIR)/board/$(BOARDDIR)/config.tmp
+
+ifndef TEXT_BASE
+TEXT_BASE = 0xFFFA0000
+endif
+
+ifeq ($(CONFIG_NAND_U_BOOT),y)
+LDSCRIPT = $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
+endif
+
+ifeq ($(CONFIG_PCIBOOT_U_BOOT),y)
+LDSCRIPT = $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
+endif
+
+PLATFORM_CPPFLAGS += -DCONFIG_440=1
+
+ifeq ($(debug),1)
+PLATFORM_CPPFLAGS += -DDEBUG
+endif
+
+ifeq ($(dbcr),1)
+PLATFORM_CPPFLAGS += -DCFG_INIT_DBCR=0x8cff0000
+endif

board/amcc/canyonlands/init.S

+/*
+ * (C) Copyright 2008
+ * Stefan Roese, DENX Software Engineering, sr@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 <ppc_asm.tmpl>
+#include <config.h>
+#include <asm-ppc/mmu.h>
+
+/**************************************************************************
+ * TLB TABLE
+ *
+ * This table is used by the cpu boot code to setup the initial tlb
+ * entries. Rather than make broad assumptions in the cpu source tree,
+ * this table lets each board set things up however they like.
+ *
+ *  Pointer to the table is returned in r1
+ *
+ *************************************************************************/
+	.section .bootpg,"ax"
+	.globl tlbtab
+
+tlbtab:
+	tlbtab_start
+
+	/*
+	 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to
+	 * use the speed up boot process. It is patched after relocation to
+	 * enable SA_I
+	 */
+	tlbentry(CFG_BOOT_BASE_ADDR, SZ_16M, CFG_BOOT_BASE_ADDR, 4, AC_R|AC_W|AC_X|SA_G) /* TLB 0 */
+
+	/*
+	 * TLB entries for SDRAM are not needed on this platform.
+	 * They are dynamically generated in the SPD DDR(2) detection
+	 * routine.
+	 */
+
+#ifdef CFG_INIT_RAM_DCACHE
+	/* TLB-entry for init-ram in dcache (SA_I must be turned off!) */
+	tlbentry(CFG_INIT_RAM_ADDR, SZ_4K, CFG_INIT_RAM_ADDR, 0, AC_R|AC_W|AC_X|SA_G)
+#endif
+
+	tlbentry(CFG_PCI_BASE, SZ_256M, 0x00000000, 0xC, AC_R|AC_W|SA_G|SA_I)
+	tlbentry(CFG_PCI_MEMBASE, SZ_256M, 0x20000000, 0xC, AC_R|AC_W|SA_G|SA_I)
+	tlbentry(CFG_PCIE_MEMBASE, SZ_256M, 0xB0000000, 0xD, AC_R|AC_W|SA_G|SA_I)
+
+	tlbentry(CFG_PCIE0_CFGBASE, SZ_16M, 0x00000000, 0xD, AC_R|AC_W|SA_G|SA_I)
+	tlbentry(CFG_PCIE1_CFGBASE, SZ_16M, 0x20000000, 0xD, AC_R|AC_W|SA_G|SA_I)
+	tlbentry(CFG_PCIE0_XCFGBASE, SZ_1K, 0x10000000, 0xD, AC_R|AC_W|SA_G|SA_I)
+	tlbentry(CFG_PCIE1_XCFGBASE, SZ_1K, 0x30000000, 0xD, AC_R|AC_W|SA_G|SA_I)
+
+	/* PCIe UTL register */
+	tlbentry(CFG_PCIE_BASE, SZ_16K, 0x08010000, 0xC, AC_R|AC_W|SA_G|SA_I)
+
+	/* TLB-entry for NAND */
+	tlbentry(CFG_NAND_ADDR, SZ_16M, CFG_NAND_ADDR, 4, AC_R|AC_W|AC_X|SA_G|SA_I)
+
+	/* TLB-entry for CPLD */
+	tlbentry(CFG_BCSR_BASE, SZ_1K, CFG_BCSR_BASE, 4, AC_R|AC_W|SA_G|SA_I)
+
+	/* TLB-entry for OCM */
+	tlbentry(CFG_OCM_BASE, SZ_4K, 0x00040000, 4, AC_R|AC_W|AC_X)
+
+	/* TLB-entry for Local Configuration registers => peripherals */
+	tlbentry(CFG_LOCAL_CONF_REGS, SZ_16M, CFG_LOCAL_CONF_REGS, 4, AC_R|AC_W|AC_X|SA_G|SA_I)
+
+	tlbtab_end
+
+#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+	/*
+	 * For NAND booting the first TLB has to be reconfigured to full size
+	 * and with caching disabled after running from RAM!
+	 */
+#define TLB00	TLB0(CFG_BOOT_BASE_ADDR, SZ_256M)
+#define TLB01	TLB1(CFG_BOOT_BASE_ADDR, 1)
+#define TLB02	TLB2(AC_R|AC_W|AC_X|SA_G|SA_I)
+
+	.globl	reconfig_tlb0
+reconfig_tlb0:
+	sync
+	isync
+	addi	r4,r0,0x0000		/* TLB entry #0 */
+	lis	r5,TLB00@h
+	ori	r5,r5,TLB00@l
+	tlbwe	r5,r4,0x0000		/* Save it out */
+	lis	r5,TLB01@h
+	ori	r5,r5,TLB01@l
+	tlbwe	r5,r4,0x0001		/* Save it out */
+	lis	r5,TLB02@h
+	ori	r5,r5,TLB02@l
+	tlbwe	r5,r4,0x0002		/* Save it out */
+	sync
+	isync
+	blr
+#endif

board/amcc/canyonlands/u-boot.lds

+/*
+ * (C) Copyright 2008
+ * 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_ARCH(powerpc)
+SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/powerpc-any-elf/lib);
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+SECTIONS
+{
+  .resetvec 0xFFFFFFFC :
+  {
+    *(.resetvec)
+  } = 0xffff
+
+  .bootpg 0xFFFFF000 :
+  {
+    cpu/ppc4xx/start.o	(.bootpg)
+  } = 0xffff
+
+  /* Read-only sections, merged into text segment: */
+  . = + SIZEOF_HEADERS;
+  .interp : { *(.interp) }
+  .hash          : { *(.hash)		}
+  .dynsym        : { *(.dynsym)		}
+  .dynstr        : { *(.dynstr)		}
+  .rel.text      : { *(.rel.text)		}
+  .rela.text     : { *(.rela.text) 	}
+  .rel.data      : { *(.rel.data)		}
+  .rela.data     : { *(.rela.data) 	}
+  .rel.rodata    : { *(.rel.rodata) 	}
+  .rela.rodata   : { *(.rela.rodata) 	}
+  .rel.got       : { *(.rel.got)		}
+  .rela.got      : { *(.rela.got)		}
+  .rel.ctors     : { *(.rel.ctors)	}
+  .rela.ctors    : { *(.rela.ctors)	}
+  .rel.dtors     : { *(.rel.dtors)	}
+  .rela.dtors    : { *(.rela.dtors)	}
+  .rel.bss       : { *(.rel.bss)		}
+  .rela.bss      : { *(.rela.bss)		}
+  .rel.plt       : { *(.rel.plt)		}
+  .rela.plt      : { *(.rela.plt)		}
+  .init          : { *(.init)	}
+  .plt : { *(.plt) }
+  .text      :
+  {
+    /* WARNING - the following is hand-optimized to fit within	*/
+    /* the sector layout of our flash chips!	XXX FIXME XXX	*/
+
+    cpu/ppc4xx/start.o	(.text)
+    board/amcc/canyonlands/init.o	(.text)
+
+    *(.text)
+    *(.fixup)
+    *(.got1)
+  }
+  _etext = .;
+  PROVIDE (etext = .);
+  .rodata    :
+  {
+    *(.rodata)
+    *(.rodata1)
+    *(.rodata.str1.4)
+  }
+  .fini      : { *(.fini)    } =0
+  .ctors     : { *(.ctors)   }
+  .dtors     : { *(.dtors)   }
+
+  /* Read-write section, merged into data segment: */
+  . = (. + 0x00FF) & 0xFFFFFF00;
+  _erotext = .;
+  PROVIDE (erotext = .);
+  .reloc   :
+  {
+    *(.got)
+    _GOT2_TABLE_ = .;
+    *(.got2)
+    _FIXUP_TABLE_ = .;
+    *(.fixup)
+  }
+  __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
+  __fixup_entries = (. - _FIXUP_TABLE_)>>2;
+
+  .data    :
+  {
+    *(.data)
+    *(.data1)
+    *(.sdata)
+    *(.sdata2)
+    *(.dynamic)
+    CONSTRUCTORS
+  }
+  _edata  =  .;
+  PROVIDE (edata = .);
+
+  . = .;
+  __u_boot_cmd_start = .;
+  .u_boot_cmd : { *(.u_boot_cmd) }
+  __u_boot_cmd_end = .;
+
+
+  . = .;
+  __start___ex_table = .;
+  __ex_table : { *(__ex_table) }
+  __stop___ex_table = .;
+
+  . = ALIGN(256);
+  __init_begin = .;
+  .text.init : { *(.text.init) }
+  .data.init : { *(.data.init) }
+  . = ALIGN(256);
+  __init_end = .;
+
+  __bss_start = .;
+  .bss       :
+  {
+   *(.sbss) *(.scommon)
+   *(.dynbss)
+   *(.bss)
+   *(COMMON)
+  }
+
+  ppcenv_assert = ASSERT(. < 0xFFFF8000, ".bss section too big, overlaps .ppcenv section. Please update your confguration: CFG_MONITOR_BASE, CFG_MONITOR_LEN and TEXT_BASE may need to be modified.");
+
+  _end = . ;
+  PROVIDE (end = .);
+}