1 files changed, 395 insertions, 0 deletions
diff --git a/board/omap730p2/platform.S b/board/omap730p2/platform.S
new file mode 100644
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+++ b/board/omap730p2/platform.S
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+/*
+ * Board specific setup info
+ *
+ * (C) Copyright 2003-2004
+ *
+ * Texas Instruments, <www.ti.com>
+ * Kshitij Gupta <Kshitij@ti.com>
+ *
+ * Modified for OMAP 1610 H2 board by Nishant Kamat, Jan 2004
+ *
+ * Modified for OMAP730 P2 Board by Dave Peverley, MPC-Data Limited
+ * (http://www.mpc-data.co.uk)
+ *
+ * TODO : Tidy up and change to use system register defines
+ *        from omap730.h where possible.
+ *
+ * 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>
+
+#if defined(CONFIG_OMAP730)
+#include <./configs/omap730.h>
+#endif
+
+_TEXT_BASE:
+	.word	TEXT_BASE	/* sdram load addr from config.mk */
+
+.globl platformsetup
+platformsetup:
+	/* Save callers address in r11 - r11 must never be modified */
+	mov r11, lr
+
+	/*------------------------------------------------------*
+	 *mask all IRQs by setting all bits in the INTMR default*
+	 *------------------------------------------------------*/
+	mov	r1,	#0xffffffff
+	ldr	r0,	=REG_IHL1_MIR
+	str	r1,	[r0]
+	ldr	r0,	=REG_IHL2_MIR
+	str	r1,	[r0]
+
+	/*------------------------------------------------------*
+	 * Set up ARM CLM registers (IDLECT1)                   *
+	 *------------------------------------------------------*/
+	ldr	r0,	REG_ARM_IDLECT1
+	ldr	r1,	VAL_ARM_IDLECT1
+	str	r1,	[r0]
+
+	/*------------------------------------------------------*
+	 * Set up ARM CLM registers (IDLECT2)  		        *
+	 *------------------------------------------------------*/
+	ldr	r0,	REG_ARM_IDLECT2
+	ldr	r1,	VAL_ARM_IDLECT2
+	str	r1,	[r0]
+
+	/*------------------------------------------------------*
+	 * Set up ARM CLM registers (IDLECT3)		        *
+	 *------------------------------------------------------*/
+	ldr	r0,	REG_ARM_IDLECT3
+	ldr	r1,	VAL_ARM_IDLECT3
+	str	r1,	[r0]
+
+
+	mov	r1,	#0x01		/* PER_EN bit */
+	ldr	r0,	REG_ARM_RSTCT2
+	strh	r1,	[r0]		/* CLKM; Peripheral reset. */
+
+	/* Set CLKM to Sync-Scalable	*/
+	/* I supposedly need to enable the dsp clock before switching */
+	mov	r1,	#0x1000
+	ldr	r0,	REG_ARM_SYSST
+	strh	r1,	[r0]
+	mov	r0,	#0x400
+1:
+	subs	r0,	r0,	#0x1	/* wait for any bubbles to finish */
+	bne	1b
+	ldr	r1,	VAL_ARM_CKCTL
+	ldr	r0,	REG_ARM_CKCTL
+	strh	r1,	[r0]
+
+	/* a few nops to let settle */
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	/* setup DPLL 1 */
+	/* Ramp up the clock to 96Mhz */
+	ldr	r1,	VAL_DPLL1_CTL
+	ldr	r0,	REG_DPLL1_CTL
+	strh	r1,	[r0]
+	ands	r1,	r1,	#0x10	/* Check if PLL is enabled. */
+	beq	lock_end	/* Do not look for lock if BYPASS selected */
+2:
+	ldrh	r1,	[r0]
+	ands	r1,	r1,	#0x01	/*	Check the LOCK bit.*/
+	beq 2b			/*	loop until bit goes hi. */
+lock_end:
+
+	/*------------------------------------------------------*
+	 * Turn off the watchdog during init...			*
+ 	 *------------------------------------------------------*/
+	ldr	r0,	REG_WATCHDOG
+	ldr	r1,	WATCHDOG_VAL1
+	str	r1,	[r0]
+	ldr	r1,	WATCHDOG_VAL2
+	str	r1,	[r0]
+	ldr	r0,	REG_WSPRDOG
+	ldr	r1,	WSPRDOG_VAL1
+	str	r1,	[r0]
+	ldr	r0,	REG_WWPSDOG
+
+watch1Wait:
+	ldr	r1,	[r0]
+	tst	r1,	#0x10
+	bne	watch1Wait
+
+	ldr	r0,	REG_WSPRDOG
+	ldr	r1,	WSPRDOG_VAL2
+	str	r1,	[r0]
+	ldr	r0,	REG_WWPSDOG
+watch2Wait:
+	ldr	r1,	[r0]
+	tst	r1,	#0x10
+	bne	watch2Wait
+
+	/* Set memory timings corresponding to the new clock speed */
+
+	/* Check execution location to determine current execution location
+	 * and branch to appropriate initialization code.
+	 */
+	/* Compare physical SDRAM base & current execution location. */
+	and     r0, pc, #0xF0000000
+	/* Compare. */
+	cmp     r0, #0
+	/* Skip over EMIF-fast initialization if running from SDRAM. */
+	bne 	skip_sdram
+
+	/*
+	* Delay for SDRAM initialization.
+	*/
+	mov	r3,	#0x1800		/* value should be checked */
+3:
+	subs	r3,	r3,	#0x1	/* Decrement count */
+	bne 	3b
+
+	ldr	r0,	REG_SDRAM_CONFIG
+	ldr	r1,	SDRAM_CONFIG_VAL
+	str	r1,	[r0]
+
+	ldr	r0,	REG_SDRAM_MRS_LEGACY
+	ldr	r1,	SDRAM_MRS_VAL
+	str	r1,	[r0]
+
+skip_sdram:
+
+common_tc:
+	/* slow interface */
+	ldr	r1,	VAL_TC_EMIFS_CS0_CONFIG
+	ldr	r0,	REG_TC_EMIFS_CS0_CONFIG
+	str	r1,	[r0] /* Chip Select 0 */
+
+	ldr	r1,	VAL_TC_EMIFS_CS1_CONFIG
+	ldr	r0,	REG_TC_EMIFS_CS1_CONFIG
+	str	r1,	[r0] /* Chip Select 1 */
+	ldr	r1,	VAL_TC_EMIFS_CS2_CONFIG
+	ldr	r0,	REG_TC_EMIFS_CS2_CONFIG
+	str	r1,	[r0] /* Chip Select 2 */
+	ldr	r1,	VAL_TC_EMIFS_CS3_CONFIG
+	ldr	r0,	REG_TC_EMIFS_CS3_CONFIG
+	str	r1,	[r0] /* Chip Select 3 */
+
+	/* 48MHz clock request for UART1 */
+	ldr	r1,	PERSEUS2_CONFIG_BASE
+	ldrh	r0,	[r1, #CONFIG_PCC_CONF]
+	orr	r0,	r0, #CONF_MOD_UART1_CLK_MODE_R
+	strh	r0,	[r1, #CONFIG_PCC_CONF]
+
+	/* Initialize public and private rheas
+	 *  - set access factor 2 on both rhea / strobe
+	 *  - disable write buffer on strb0, enable write buffer on strb1
+	 */
+
+	ldr	R0,	REG_RHEA_PUB_CTL
+	ldr	R1,	REG_RHEA_PRIV_CTL
+	ldr	R2,	VAL_RHEA_CTL
+	strh	R2,	[R0]
+	strh	R2,	[R1]
+	mov	R3,	#2          /* disable write buffer on strb0, enable write buffer on strb1 */
+	strh	R3,	[R0, #0x08]	/* arm rhea control reg */
+	strh	R3,	[R1, #0x08]
+
+	/* enable IRQ and FIQ */
+
+	mrs	r4,	CPSR
+	bic	r4,	r4, #IRQ_MASK
+	bic	r4,	r4, #FIQ_MASK
+	msr	CPSR,	r4
+
+	/* set TAP CONF to TRI EMULATION */
+
+	ldr	r1,	[r0, #CONFIG_MODE2]
+	bic	r1,	r1, #0x18
+	orr	r1,	r1, #0x10
+	str	r1,	[r0, #CONFIG_MODE2]
+
+	/* set tdbgen to 1 */
+
+	ldr	r0,	PERSEUS2_CONFIG_BASE
+	ldr	r1,	[r0, #CONFIG_MODE1]
+	mov	r2,	#0x10000
+	orr	r1,	r1, r2
+	str	r1,	[r0, #CONFIG_MODE1]
+
+#ifdef CONFIG_P2_OMAP1610
+	/* inserting additional 2 clock cycle hold time for LAN */
+	ldr     r0,     REG_TC_EMIFS_CS1_ADVANCED
+	ldr    	r1,     VAL_TC_EMIFS_CS1_ADVANCED
+	str     r1,     [r0]
+#endif
+	/* Start MPU Timer 1 */
+	ldr	r0,	REG_MPU_LOAD_TIMER
+	ldr	r1,	VAL_MPU_LOAD_TIMER
+	str	r1,	[r0]
+
+	ldr	r0,	REG_MPU_CNTL_TIMER
+	ldr	r1,	VAL_MPU_CNTL_TIMER
+	str	r1,	[r0]
+
+	/* back to arch calling code */
+	mov	pc,	r11
+
+	/* the literal pools origin */
+	.ltorg
+
+REG_TC_EMIFS_CONFIG:		/* 32 bits */
+	.word 0xfffecc0c
+REG_TC_EMIFS_CS0_CONFIG:	/* 32 bits */
+	.word 0xfffecc10
+REG_TC_EMIFS_CS1_CONFIG:	/* 32 bits */
+	.word 0xfffecc14
+REG_TC_EMIFS_CS2_CONFIG:	/* 32 bits */
+	.word 0xfffecc18
+REG_TC_EMIFS_CS3_CONFIG:	/* 32 bits */
+	.word 0xfffecc1c
+
+#ifdef CONFIG_P2_OMAP730
+REG_TC_EMIFS_CS1_ADVANCED:	/* 32 bits */
+	.word 0xfffecc54
+#endif
+
+/* MPU clock/reset/power mode control registers */
+REG_ARM_CKCTL:			/* 16 bits */
+	.word 0xfffece00
+
+REG_ARM_IDLECT3:		/* 16 bits */
+	.word 0xfffece24
+REG_ARM_IDLECT2:		/* 16 bits */
+	.word 0xfffece08
+REG_ARM_IDLECT1:		/* 16 bits */
+	.word 0xfffece04
+
+REG_ARM_RSTCT2:			/* 16 bits */
+	.word 0xfffece14
+REG_ARM_SYSST:			/* 16 bits */
+	.word 0xfffece18
+/* DPLL control registers */
+REG_DPLL1_CTL:			/* 16 bits */
+	.word 0xfffecf00
+
+/* Watch Dog register */
+/* secure watchdog stop */
+REG_WSPRDOG:
+	.word 0xfffeb048
+/* watchdog write pending */
+REG_WWPSDOG:
+	.word 0xfffeb034
+
+WSPRDOG_VAL1:
+	.word 0x0000aaaa
+WSPRDOG_VAL2:
+	.word 0x00005555
+
+/* SDRAM config is: auto refresh enabled, 16 bit 4 bank,
+ counter @8192 rows, 10 ns, 8 burst */
+REG_SDRAM_CONFIG:
+	.word 0xfffecc20
+
+REG_SDRAM_MRS_LEGACY:
+	.word 0xfffecc24
+
+REG_WATCHDOG:
+	.word 0xfffec808
+
+REG_MPU_LOAD_TIMER:
+	.word 0xfffec600
+REG_MPU_CNTL_TIMER:
+	.word 0xfffec500
+
+/* Public and private rhea bridge registers definition */
+
+REG_RHEA_PUB_CTL:
+	.word 0xFFFECA00
+
+REG_RHEA_PRIV_CTL:
+	.word 0xFFFED300
+
+/* EMIFF SDRAM Configuration register
+   - self refresh disable
+   - auto refresh enabled
+   - SDRAM type 64 Mb, 16 bits bus 4 banks
+   - power down enabled
+   - SDRAM clock disabled
+ */
+SDRAM_CONFIG_VAL:
+	.word 0x0C017DF4
+
+/* Burst full page length ; cas latency = 3 */
+SDRAM_MRS_VAL:
+	.word 0x00000037
+
+VAL_ARM_CKCTL:
+	.word 0x6505
+VAL_DPLL1_CTL:
+	.word 0x3412
+
+#ifdef CONFIG_P2_OMAP730
+VAL_TC_EMIFS_CS0_CONFIG:
+	.word 0x0000FFF3
+VAL_TC_EMIFS_CS1_CONFIG:
+	.word 0x00004278
+VAL_TC_EMIFS_CS2_CONFIG:
+	.word 0x00004278
+VAL_TC_EMIFS_CS3_CONFIG:
+	.word 0x00004278
+VAL_TC_EMIFS_CS1_ADVANCED:
+	.word 0x00000022
+#endif
+
+VAL_ARM_IDLECT1:
+	.word 0x00000400
+VAL_ARM_IDLECT2:
+	.word 0x00000886
+VAL_ARM_IDLECT3:
+	.word 0x00000015
+
+WATCHDOG_VAL1:
+	.word 0x000000f5
+WATCHDOG_VAL2:
+	.word 0x000000a0
+
+VAL_MPU_LOAD_TIMER:
+	.word 0xffffffff
+VAL_MPU_CNTL_TIMER:
+	.word 0xffffffa1
+
+VAL_RHEA_CTL:
+	.word			0xFF22
+
+/* Config Register vals */
+PERSEUS2_CONFIG_BASE:
+	.word			0xFFFE1000
+
+.equ	CONFIG_PCC_CONF,	0xB4
+.equ	CONFIG_MODE1,		0x10
+.equ	CONFIG_MODE2,		0x14
+.equ	CONF_MOD_UART1_CLK_MODE_R,	0x0A
+
+/* misc values */
+.equ	IRQ_MASK,		0x80           // IRQ mask value
+.equ	FIQ_MASK,		0x40           // FIQ mask value