Initial support for Nomadik 8815 development board

The NMDK8815 board is distributed by ST Microelectornics.
Other (proprietary) code must be run to unlock the CPU before
U-Boot runs. doc/README.nmdk8815 outlines the boot sequence.

This is the initial port, with basic infrastructure and
a working serial port.

Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stnwireless.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

5 files changed, 544 insertions, 0 deletions

diff --git a/board/st/nmdk8815/Makefile b/board/st/nmdk8815/Makefile
new file mode 100644
index 0000000..be9a424
--- /dev/null
+++ b/board/st/nmdk8815/Makefile
@@ -0,0 +1,55 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2004
+# ARM Ltd.
+# Philippe Robin, <philippe.robin@arm.com>
+#
+# 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	:= nmdk8815.o
+SOBJS	:= platform.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB): $(obj).depend $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/st/nmdk8815/config.mk b/board/st/nmdk8815/config.mk
new file mode 100644
index 0000000..590393b
--- /dev/null
+++ b/board/st/nmdk8815/config.mk
@@ -0,0 +1,26 @@
+# (C) Copyright 2007
+# STMicroelectronics, <www.st.com>
+#
+# 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
+#
+#
+# image should be loaded at 0x01000000
+#
+
+TEXT_BASE = 0x03F80000
diff --git a/board/st/nmdk8815/nmdk8815.c b/board/st/nmdk8815/nmdk8815.c
new file mode 100644
index 0000000..c54eac1
--- /dev/null
+++ b/board/st/nmdk8815/nmdk8815.c
@@ -0,0 +1,72 @@
+/*
+ * (C) Copyright 2005
+ * STMicrolelctronics, <www.st.com>
+ *
+ * (C) Copyright 2004
+ * ARM Ltd.
+ * Philippe Robin, <philippe.robin@arm.com>
+ *
+ * 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 <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+void show_boot_progress(int progress)
+{
+	printf("%i\n", progress);
+}
+#endif
+
+/*
+ * Miscellaneous platform dependent initialisations
+ */
+int board_init(void)
+{
+	gd->bd->bi_arch_number = MACH_TYPE_NOMADIK;
+	gd->bd->bi_boot_params = 0x00000100;
+	writel(0xC37800F0, NOMADIK_GPIO1_BASE + 0x20);
+	writel(0x00000000, NOMADIK_GPIO1_BASE + 0x24);
+	writel(0x00000000, NOMADIK_GPIO1_BASE + 0x28);
+	writel(readl(NOMADIK_SRC_BASE) | 0x8000, NOMADIK_SRC_BASE);
+
+	icache_enable();
+
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	setenv("verify", "n");
+	return 0;
+}
+
+int dram_init(void)
+{
+	/* set dram bank start addr and size */
+	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;
+	return 0;
+}
diff --git a/board/st/nmdk8815/platform.S b/board/st/nmdk8815/platform.S
new file mode 100644
index 0000000..2a67110
--- /dev/null
+++ b/board/st/nmdk8815/platform.S
@@ -0,0 +1,340 @@
+/*
+ * Board specific setup info
+ *
+ * (C) Copyright 2005
+ * STMicrolelctronics, <www.st.com>
+ *
+ * (C) Copyright 2004, ARM Ltd.
+ * Philippe Robin, <philippe.robin@arm.com>
+ *
+ * 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>
+
+.globl lowlevel_init
+lowlevel_init:
+	/* Jump to the flash address */
+	ldr r0, =CFG_ONENAND_BASE
+
+	/*
+	 * Make it independent whether we boot from 0x0 or 0x30000000.
+	 * Non-portable: it relies on the knowledge that ip has to be updated
+	 */
+	orr ip, ip, r0	/* adjust return address of cpu_init_crit */
+	orr lr, lr, r0	/* adjust return address */
+	orr pc, pc, r0	/* jump to the normal address */
+	nop
+
+	/* Initialize PLL, Remap clear, FSMC, MPMC here! */
+	/* What about GPIO, CLCD and UART */
+
+	/* PLL Initialization */
+	/* Prog the PLL1 @ 266 MHz ==> SDRAM Clock = 100.8 MHz */
+	ldr r0, =NOMADIK_SRC_BASE
+
+	ldr r1, =0x2B013502
+
+	str r1, [r0, #0x14]
+
+	/* Used to set all the timers clock to 2.4MHZ */
+	ldr r1, =0x2AAAA004
+	str r1, [r0]
+
+	ldr r1, =0x10000000
+	str r1, [r0, #0x10]
+
+	/* FSMC setup ---- */
+	ldr r0, =NOMADIK_FSMC_BASE
+
+	ldr r1, =0x10DB		/* For 16-bit NOR flash */
+	str r1, [r0, #0x08]
+
+	ldr r1, =0x03333333	/* For 16-bit NOR flash */
+	str r1, [r0, #0xc]
+
+	/* oneNAND setting */
+	ldr r1, =0x0000105B	/* BCR0 Prog control register */
+	str r1, [r0]
+
+	ldr r1, =0x0A200551	/* BTR0 Prog timing register */
+	str r1, [r0, #0x04]
+
+	/* preload the instructions into icache */
+	add r0, pc, #0x1F
+	bic r0, r0, #0x1F
+	mcr p15, 0, r0, c7, c13, 1
+	add r0, r0, #0x20
+	mcr p15, 0, r0, c7, c13, 1
+
+	/* Now Clear Remap */
+	ldr r0, =NOMADIK_SRC_BASE
+
+	ldr r1, =0x2004
+	str r1, [r0]
+
+	ldr r1, =0x10000000
+	str r1, [r0, #0x10]
+
+	ldr r0, =0x101E9000
+	ldr r1, =0x2004
+	str r1, [r0]
+
+	ldr r0, =NOMADIK_SRC_BASE
+	ldr r1, =0x2104
+	str r1, [r0]
+
+	/* FSMC setup -- */
+	mov r0, #(NOMADIK_FSMC_BASE & 0x10000000)
+	orr r0, r0, #(NOMADIK_FSMC_BASE & 0x0FFFFFFF)
+
+	ldr r1, =0x10DB		/* For 16-bit NOR flash */
+	str r1, [r0, #0x8]
+
+	ldr r1, =0x03333333	/* For 16-bit NOR flash */
+	str r1, [r0, #0xc]
+
+	/* MPMC Setup */
+	ldr r0, =NOMADIK_MPMC_BASE
+
+	ldr r1, =0xF00003
+	str r1, [r0]		/* Enable the MPMC and the DLL */
+
+	ldr r1, =0x183
+	str r1, [r0, #0x20]
+
+	ldr r2, =NOMADIK_PMU_BASE
+
+	ldr r1, =0x1111
+	str r1, [r2]
+
+	ldr r1, =0x1111		/* Prog the, mand delay strategy */
+	str r1, [r0, #0x28]
+
+	ldr r1, =0x103		/* NOP ,mand */
+	str r1, [r0, #0x20]
+
+	/* FIXME -- Wait required here */
+
+	ldr r1, =0x103		/* PALL ,mand*/
+	str r1, [r0, #0x20]
+
+	ldr r1, =0x1
+	str r1, [r0, #0x24]	/* To do at least two auto-refresh */
+
+	/* FIXME -- Wait required here */
+
+	/* Auto-refresh period = 7.8us @ SDRAM Clock = 100.8 MHz */
+	ldr r1, =0x31
+	str r1, [r0, #0x24]
+
+	/* Prog Little Endian, Not defined in 8800 board */
+	ldr r1, =0x0
+	str r1,	[r0, #0x8]
+
+
+	ldr r1, =0x2
+	str r1, [r0, #0x30]		/* Prog tRP timing */
+
+	ldr r1, =0x4			/* Change for 8815 */
+	str r1, [r0, #0x34]		/* Prog tRAS timing */
+
+	ldr r1, =0xB
+	str r1, [r0, #0x38]		/* Prog tSREX timing */
+
+
+	ldr r1, =0x1
+	str r1, [r0, #0x44]		/* Prog tWR timing */
+
+	ldr r1, =0x8
+	str r1, [r0, #0x48]		/* Prog tRC timing */
+
+	ldr r1, =0xA
+	str r1, [r0, #0x4C]		/* Prog tRFC timing */
+
+	ldr r1, =0xB
+	str r1, [r0, #0x50]		/* Prog tXSR timing */
+
+	ldr r1, =0x1
+	str r1, [r0, #0x54]		/* Prog tRRD timing */
+
+	ldr r1, =0x1
+	str r1, [r0, #0x58]		/* Prog tMRD timing */
+
+	ldr r1, =0x1
+	str r1, [r0, #0x5C]		/* Prog tCDLR timing */
+
+	/* DDR-SDRAM MEMORY IS ON BANK0 8815 */
+	ldr r1, =0x304			/* Prog RAS and CAS for CS 0 */
+	str r1, [r0, #0x104]
+
+	/* SDR-SDRAM MEMORY IS ON BANK1 8815 */
+	ldr r1, =0x304			/* Prog RAS and CAS for CS 1 */
+	str r1, [r0, #0x124]
+	/* THE DATA BUS WIDE IS PROGRAM FOR 16-BITS */
+	/* DDR-SDRAM MEMORY IS ON BANK0*/
+
+	ldr r1, =0x884			/* 8815 : config reg in BRC for CS0 */
+	str r1, [r0, #0x100]
+
+	/*SDR-SDRAM MEMORY IS ON BANK1*/
+
+	ldr r1, =0x884			/* 8815 : config reg in BRC for CS1 */
+	str r1, [r0, #0x120]
+
+	ldr r1, =0x83			/*MODE Mand*/
+	str r1, [r0, #0x20]
+
+	/* LOAD MODE REGISTER FOR 2 bursts of 16b, with DDR mem ON BANK0 */
+
+	ldr r1, =0x62000			/*Data in*/
+	ldr r1, [r1]
+
+	/* LOAD MODE REGISTER FOR 2 bursts of 16b, with DDR mem ON BANK1 */
+
+	ldr r1, =0x8062000
+	ldr r1, [r1]
+
+	ldr r1, =0x003
+	str r1, [r0, #0x20]
+
+	/* ENABLE ALL THE BUFFER FOR EACH AHB PORT*/
+
+	ldr r1, =0x01			/* Enable buffer 0 */
+	str r1, [r0, #0x400]
+
+	ldr r1, =0x01			/* Enable buffer 1 */
+	str r1, [r0, #0x420]
+
+	ldr r1, =0x01			/* Enable buffer 2 */
+	str r1, [r0, #0x440]
+
+	ldr r1, =0x01			/* Enable buffer 3 */
+	str r1, [r0, #0x460]
+
+	ldr r1, =0x01			/* Enable buffer 4 */
+	str r1, [r0, #0x480]
+
+	ldr r1, =0x01			/* Enable buffer 5 */
+	str r1, [r0, #0x4A0]
+
+	/* GPIO settings */
+
+	ldr r0, =NOMADIK_GPIO1_BASE
+
+	ldr r1, =0xC0600000
+	str r1, [r0, #0x20]
+
+	ldr r1, =0x3F9FFFFF		/* ABHI change this for uart1 */
+	str r1, [r0, #0x24]
+
+	ldr r1, =0x3F9FFFFF		/* ABHI change this for uart1 */
+	str r1, [r0, #0x28]
+
+	ldr r0, =NOMADIK_GPIO0_BASE
+
+	ldr r1, =0xFFFFFFFF
+	str r1, [r0, #0x20]
+
+	ldr r1, =0x00
+	str r1, [r0, #0x24]
+
+	ldr r1, =0x00
+	str r1, [r0, #0x28]
+
+	/* Configure CPLD_CTRL register for enabling MUX logic for UART0/UART2 */
+
+	ldr r0, =NOMADIK_FSMC_BASE
+
+	ldr r1, =0x10DB			/* INIT FSMC bank 0 */
+	str r1, [r0, #0x00]
+
+	ldr r1, =0x0FFFFFFF
+	str r1, [r0, #0x04]
+
+	ldr r1, =0x010DB		/* INIT FSMC bank 1 */
+	str r1, [r0, #0x08]
+
+	ldr r1, =0x00FFFFFFF
+	str r1, [r0, #0x0C]
+
+	ldr r0, =NOMADIK_UART0_BASE
+
+	ldr r1, =0x00000000
+	str r1, [r0, #0x30]
+
+	ldr r1, =0x0000004e
+	str r1, [r0, #0x24]
+
+	ldr r1, =0x00000008
+	str r1, [r0, #0x28]
+
+	ldr r1, =0x00000060
+	str r1, [r0, #0x2C]
+
+	ldr r1, =0x00000301
+	str r1, [r0, #0x30]
+
+	ldr r1, =0x00000066
+	str r1, [r0]
+
+	ldr r0, =NOMADIK_UART1_BASE
+
+	ldr r1, =0x00000000
+	str r1, [r0, #0x30]
+
+	ldr r1, =0x0000004e
+	str r1, [r0, #0x24]
+
+	ldr r1, =0x00000008
+	str r1, [r0, #0x28]
+
+	ldr r1, =0x00000060
+	str r1, [r0, #0x2C]
+
+	ldr r1, =0x00000301
+	str r1, [r0, #0x30]
+
+	ldr r1, =0x00000066
+	str r1, [r0]
+
+	ldr r0, =NOMADIK_UART2_BASE
+
+	ldr r1, =0x00000000
+	str r1, [r0, #0x30]
+
+	ldr r1, =0x0000004e
+	str r1, [r0, #0x24]
+
+	ldr r1, =0x00000008
+	str r1, [r0, #0x28]
+
+	ldr r1, =0x00000060
+	str r1, [r0, #0x2C]
+
+	ldr r1, =0x00000301
+	str r1, [r0, #0x30]
+
+	ldr r1, =0x00000066
+	str r1, [r0]
+
+	/* Configure CPLD to enable UART0 */
+
+	mov pc, lr
diff --git a/board/st/nmdk8815/u-boot.lds b/board/st/nmdk8815/u-boot.lds
new file mode 100644
index 0000000..6d6481b
--- /dev/null
+++ b/board/st/nmdk8815/u-boot.lds
@@ -0,0 +1,51 @@
+/*
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@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/arm926ejs/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 (NOLOAD) : { *(.bss) . = ALIGN(4); }
+	_end = .;
+}