Merge the new NAND code (testing-NAND brach); see doc/README.nand

Rewrite of NAND code based on what is in 2.6.12 Linux kernel
Patch by Ladislav Michl, 29 Jun 2005

[Merge with /home/tur/nand/u-boot]

1 files changed, 287 insertions, 0 deletions

diff --git a/board/netstar/setup.S b/board/netstar/setup.S
new file mode 100644
index 0000000..f67786d
--- /dev/null
+++ b/board/netstar/setup.S
@@ -0,0 +1,287 @@
+/*
+ * Board specific setup info
+ *
+ * (C) Copyright 2004 Ales Jindra <jindra@2n.cz>
+ * (C) Copyright 2005 Ladislav Michl <michl@2n.cz>
+ *
+ * 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>
+
+_TEXT_BASE:
+	.word	TEXT_BASE	/* SDRAM load addr from config.mk */
+
+OMAP5910_LPG1_BASE:		.word 0xfffbd000
+OMAP5910_TIPB_SWITCHES_BASE:	.word 0xfffbc800
+OMAP5910_MPU_TC_BASE:		.word 0xfffecc00
+OMAP5910_MPU_CLKM_BASE:		.word 0xfffece00
+OMAP5910_ULPD_PWR_MNG_BASE:	.word 0xfffe0800
+OMAP5910_DPLL1_BASE:		.word 0xfffecf00
+OMAP5910_GPIO_BASE:		.word 0xfffce000
+OMAP5910_MPU_WD_TIMER_BASE:	.word 0xfffec800
+OMAP5910_MPUI_BASE:		.word 0xfffec900
+
+_OMAP5910_ARM_CKCTL:		.word OMAP5910_ARM_CKCTL
+_OMAP5910_ARM_EN_CLK:		.word OMAP5910_ARM_EN_CLK
+
+OMAP5910_MPUI_CTRL:		.word 0x0000ff1b
+
+VAL_EMIFS_CS0_CONFIG:		.word 0x00009090
+VAL_EMIFS_CS1_CONFIG:		.word 0x00003031
+VAL_EMIFS_CS2_CONFIG:		.word 0x0000a0a1
+VAL_EMIFS_CS3_CONFIG:		.word 0x0000c0c0
+VAL_EMIFS_DYN_WAIT:		.word 0x00000000
+/* autorefresh counter 0x246 ((64000000/13.4)-400)/8192) */
+				/*     SLRF       SD_RET     ARE        SDRAM_TYPE   ARCV           SDRAM_FREQUENCY PWD     CLK */
+
+#if (PHYS_SDRAM_1_SIZE == SZ_32M)
+VAL_EMIFF_SDRAM_CONFIG:		.word ((0 << 0) | (0 << 1) | (3 << 2) | (0xf << 4) | (0x246 << 8) | (0 << 24) | (0 << 26) | (0 << 27))
+#else
+VAL_EMIFF_SDRAM_CONFIG:		.word ((0 << 0) | (0 << 1) | (3 << 2) | (0xd << 4) | (0x246 << 8) | (0 << 24) | (0 << 26) | (0 << 27))
+#endif
+
+VAL_EMIFF_SDRAM_CONFIG2:	.word 0x00000003
+VAL_EMIFF_MRS:			.word 0x00000037
+
+/*
+ * GPIO04 - Green LED (Red LED is connected to LED Pulse Generator)
+ * GPIO07 - LAN91C111 reset
+ */
+GPIO_DIRECTION:
+	.word 0x0000ff6f
+/*
+ * Disable everything (green LED is connected via invertor)
+ */
+GPIO_OUTPUT:
+	.word 0x00000010
+
+MUX_CONFIG_BASE:
+	.word 0xfffe1000
+
+MUX_CONFIG_VALUES:
+	.align 4
+	.word 0x00000000	@ FUNC_MUX_CTRL_0
+	.word 0x00000000	@ FUNC_MUX_CTRL_1
+	.word 0x00000000	@ FUNC_MUX_CTRL_2
+	.word 0x00000000	@ FUNC_MUX_CTRL_3
+	.word 0x00000000	@ FUNC_MUX_CTRL_4
+	.word 0x02080480	@ FUNC_MUX_CTRL_5
+	.word 0x0100001c	@ FUNC_MUX_CTRL_6
+	.word 0x0004800b	@ FUNC_MUX_CTRL_7
+	.word 0x10001200	@ FUNC_MUX_CTRL_8
+	.word 0x01201012	@ FUNC_MUX_CTRL_9
+	.word 0x02082248	@ FUNC_MUX_CTRL_A
+	.word 0x00000248	@ FUNC_MUX_CTRL_B
+	.word 0x12240000	@ FUNC_MUX_CTRL_C
+	.word 0x00002000	@ FUNC_MUX_CTRL_D
+	.word 0x00000000	@ PULL_DWN_CTRL_0
+	.word 0x00000800	@ PULL_DWN_CTRL_1
+	.word 0x01801000	@ PULL_DWN_CTRL_2
+	.word 0x00000000	@ PULL_DWN_CTRL_3
+	.word 0x00000000	@ GATE_INH_CTRL_0
+	.word 0x00000000	@ VOLTAGE_CTRL_0
+	.word 0x00000000	@ TEST_DBG_CTRL_0
+	.word 0x00000006	@ MOD_CONF_CTRL_0
+	.word 0x0000eaef	@ COMP_MODE_CTRL_0
+
+MUX_CONFIG_OFFSETS:
+	.align 1
+	.byte 0x00		@ FUNC_MUX_CTRL_0
+	.byte 0x04		@ FUNC_MUX_CTRL_1
+	.byte 0x08		@ FUNC_MUX_CTRL_2
+	.byte 0x10		@ FUNC_MUX_CTRL_3
+	.byte 0x14		@ FUNC_MUX_CTRL_4
+	.byte 0x18		@ FUNC_MUX_CTRL_5
+	.byte 0x1c		@ FUNC_MUX_CTRL_6
+	.byte 0x20		@ FUNC_MUX_CTRL_7
+	.byte 0x24		@ FUNC_MUX_CTRL_8
+	.byte 0x28		@ FUNC_MUX_CTRL_9
+	.byte 0x2c		@ FUNC_MUX_CTRL_A
+	.byte 0x30		@ FUNC_MUX_CTRL_B
+	.byte 0x34		@ FUNC_MUX_CTRL_C
+	.byte 0x38		@ FUNC_MUX_CTRL_D
+	.byte 0x40		@ PULL_DWN_CTRL_0
+	.byte 0x44		@ PULL_DWN_CTRL_1
+	.byte 0x48		@ PULL_DWN_CTRL_2
+	.byte 0x4c		@ PULL_DWN_CTRL_3
+	.byte 0x50		@ GATE_INH_CTRL_0
+	.byte 0x60		@ VOLTAGE_CTRL_0
+	.byte 0x70		@ TEST_DBG_CTRL_0
+	.byte 0x80		@ MOD_CONF_CTRL_0
+	.byte 0x0c		@ COMP_MODE_CTRL_0
+	.byte 0xff
+
+.globl lowlevel_init
+lowlevel_init:
+	/* Improve performance a bit... */
+	mrc	p15, 0, r1, c0, c0, 0		@ read C15 ID register
+	mrc	p15, 0, r1, c0, c0, 1		@ read C15 Cache information register
+	mrc	p15, 0, r1, c1, c0, 0		@ read C15 Control register
+	orr	r1, r1, #0x1000			@ enable I-cache, map interrupt vector 0xffff0000
+	mcr	p15, 0, r1, c1, c0, 0		@ write C15 Control register
+	mov	r1, #0x00
+	mcr	p15, 0, r1, c7, c5, 0		@ Flush I-cache
+	nop
+	nop
+	nop
+	nop
+
+	/* Setup clocking mode */
+	ldr	r0, OMAP5910_MPU_CLKM_BASE	@ prepare base of CLOCK unit
+	ldrh	r1, [r0, #0x18]			@ get reset status
+	bic	r1, r1, #(7 << 11)		@ clear clock select
+	orr	r1, r1, #(2 << 11)		@ set synchronous scalable
+	mov	r2, #0				@ set wait counter to 100 clock cycles
+
+icache_loop:
+	cmp	r2, #0x01
+	streqh	r1, [r0, #0x18]
+	add	r2, r2, #0x01
+	cmp	r2, #0x10
+	bne	icache_loop
+	nop
+
+	/* Setup clock divisors */
+	ldr	r0, OMAP5910_MPU_CLKM_BASE	@ base of CLOCK unit
+	ldr	r1, _OMAP5910_ARM_CKCTL
+	orr	r1, r1, #0x2000			@ enable DSP clock
+	strh	r1, [r0, #0x00]			@ setup clock divisors
+
+	/* Setup DPLL to generate requested freq */
+	ldr	r0, OMAP5910_DPLL1_BASE		@ base of DPLL1 register
+	mov	r1, #0x0010			@ set PLL_ENABLE
+	orr	r1, r1, #0x2000			@ set IOB to new locking
+	orr	r1, r1, #(OMAP5910_DPLL_MUL << 7) @ setup multiplier CLKREF
+	orr	r1, r1, #(OMAP5910_DPLL_DIV << 5) @ setup divider CLKREF
+	strh	r1, [r0]			@ write
+
+locking:
+	ldrh	r1, [r0]			@ get DPLL value
+	tst	r1, #0x01
+	beq	locking				@ while LOCK not set
+
+	/* Enable clock */
+	ldr	r0, OMAP5910_MPU_CLKM_BASE	@ base of CLOCK unit
+	mov	r1, #(1 << 10)			@ disable idle mode do not check
+						@ nWAKEUP pin, other remain active
+	strh	r1, [r0, #0x04]
+	ldr	r1, _OMAP5910_ARM_EN_CLK
+	strh	r1, [r0, #0x08]
+	mov	r1, #0x003f			@ FLASH.RP not enabled in idle and
+						@ max delayed ( 32 x CLKIN )
+	strh	r1, [r0, #0x0c]
+
+	/* Configure 5910 pins functions to match our board. */
+	ldr     r0, MUX_CONFIG_BASE
+	adr	r1, MUX_CONFIG_VALUES
+	adr	r2, MUX_CONFIG_OFFSETS
+next_mux_cfg:
+	ldrb	r3, [r2], #1
+	ldr	r4, [r1], #4
+	cmp	r3, #0xff
+	strne	r4, [r0, r3]
+	bne	next_mux_cfg
+
+	/* Configure GPIO pins (also disables Green LED) */
+	ldr	r0, OMAP5910_GPIO_BASE
+	ldr	r1, GPIO_OUTPUT
+	strh    r1, [r0, #0x04]
+	ldr	r1, GPIO_DIRECTION
+	strh	r1, [r0, #0x08]
+
+	/* EnablePeripherals */
+	ldr	r0, OMAP5910_MPU_CLKM_BASE	@ CLOCK unit
+	mov	r1, #0x0001			@ Peripheral enable
+	strh	r1, [r0, #0x14]
+
+	/* Program LED Pulse Generator */
+	ldr	r0, OMAP5910_LPG1_BASE		@ 1st LED Pulse Generator
+	mov	r1, #0x7F			@ Set obscure frequency in
+	strb	r1, [r0, #0x00]			@ LCR
+	mov	r1, #0x01			@ Enable clock (CLK_EN) in
+	strb    r1, [r0, #0x04]			@ PMR
+
+	/* TIPB Lock UART1 */
+	ldr	r0, OMAP5910_TIPB_SWITCHES_BASE	@ prepare base of TIPB switches
+	mov	r1, #1				@ ARM allocated
+	strh	r1, [r0,#0x04]			@ clear IRQ line and status bits
+	strh	r1, [r0,#0x00]
+	ldrh	r1, [r0,#0x04]
+
+	/* Disable watchdog */
+	ldr	r0, OMAP5910_MPU_WD_TIMER_BASE
+	mov	r1, #0xf5
+	strh	r1, [r0, #0x8]
+	mov	r1, #0xa0
+	strh	r1, [r0, #0x8]
+
+	/* Enable MCLK */
+	ldr	r0, OMAP5910_ULPD_PWR_MNG_BASE
+	mov	r1, #0x6
+	strh	r1, [r0, #0x34]
+	strh	r1, [r0, #0x34]
+
+	/* Setup clock divisors */
+	ldr	r0, OMAP5910_ULPD_PWR_MNG_BASE	@ base of ULDPL DPLL1 register
+
+	mov	r1, #0x0010			@ set PLL_ENABLE
+	orr	r1, r1, #0x2000			@ set IOB to new locking
+	strh	r1, [r0]			@ write
+
+ulocking:
+	ldrh	r1, [r0]			@ get DPLL value
+	tst	r1, #1
+	beq	ulocking			@ while LOCK not set
+
+	/* EMIF init */
+	ldr	r0, OMAP5910_MPU_TC_BASE
+	ldrh	r1, [r0, #0x0c]			@ EMIFS_CONFIG_REG
+	bic	r1, r1, #0x0c			@ pwr down disabled, flash WP
+	orr	r1, r1, #0x01
+	str	r1, [r0, #0x0c]
+
+	ldr	r1, VAL_EMIFS_CS0_CONFIG
+	str	r1, [r0, #0x10]			@ EMIFS_CS0_CONFIG
+	ldr	r1, VAL_EMIFS_CS1_CONFIG
+	str	r1, [r0, #0x14]			@ EMIFS_CS1_CONFIG
+	ldr	r1, VAL_EMIFS_CS2_CONFIG
+	str	r1, [r0, #0x18]			@ EMIFS_CS2_CONFIG
+	ldr	r1, VAL_EMIFS_CS3_CONFIG
+	str	r1, [r0, #0x1c]			@ EMIFS_CS3_CONFIG
+	ldr	r1, VAL_EMIFS_DYN_WAIT
+	str	r1, [r0, #0x40]			@ EMIFS_CFG_DYN_WAIT
+
+	/* Setup SDRAM */
+	ldr	r1, VAL_EMIFF_SDRAM_CONFIG
+	str	r1, [r0, #0x20]			@ EMIFF_SDRAM_CONFIG
+	ldr	r1, VAL_EMIFF_SDRAM_CONFIG2
+	str	r1, [r0, #0x3c]			@ EMIFF_SDRAM_CONFIG2
+	ldr	r1, VAL_EMIFF_MRS
+	str	r1, [r0, #0x24]			@ EMIFF_MRS
+	/* SDRAM needs 100us to stabilize */
+	mov	r0, #0x4000
+sdelay:
+	subs	r0, r0, #0x1
+	bne 	sdelay
+
+	/* back to arch calling code */
+	mov	pc, lr
+.end