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>
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