Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 223 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/board/davedenx/qong/lowlevel_init.S b/qemu/roms/u-boot/board/davedenx/qong/lowlevel_init.S
new file mode 100644
index 000000000..8887023f8
--- /dev/null
+++ b/qemu/roms/u-boot/board/davedenx/qong/lowlevel_init.S
@@ -0,0 +1,223 @@
+/*
+ * Copyright (C) 2009, Emcraft Systems, Ilya Yanok <yanok@emcraft.com>
+ *
+ * Based on board/freescale/mx31ads/lowlevel_init.S
+ * by Guennadi Liakhovetski.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/imx-regs.h>
+
+.macro REG reg, val
+	ldr r2, =\reg
+	ldr r3, =\val
+	str r3, [r2]
+.endm
+
+.macro REG8 reg, val
+	ldr r2, =\reg
+	ldr r3, =\val
+	strb r3, [r2]
+.endm
+
+.macro DELAY loops
+	ldr r2, =\loops
+1:
+	subs	r2, r2, #1
+	nop
+	bcs 1b
+.endm
+
+.macro SETUP_RAM cfg, ctl
+	/* B8xxxxxx - NAND, 8xxxxxxx - CSD0 RAM */
+	REG	0xB8001010, 0x00000004
+	ldr r3, =\cfg
+	ldr r2, =WEIM_ESDCFG0
+	str r3, [r2]
+	REG	0xB8001000, 0x92100000
+	REG	0x80000f00, 0x12344321
+	REG	0xB8001000, 0xa2100000
+	REG	0x80000000, 0x12344321
+	REG	0x80000000, 0x12344321
+	REG	0xB8001000, 0xb2100000
+	REG8	0x80000033, 0xda
+	REG8	0x81000000, 0xff
+	ldr r3, =\ctl
+	ldr r2, =WEIM_ESDCTL0
+	str r3, [r2]
+	REG	0x80000000, 0xDEADBEEF
+	REG	0xB8001010, 0x0000000c
+
+.endm
+/* RedBoot: To support 133MHz DDR */
+.macro init_drive_strength
+	/*
+	 * Disable maximum drive strength SDRAM/DDR lines by clearing DSE1 bits
+	 * in SW_PAD_CTL registers
+	 */
+
+	/* SDCLK */
+	ldr r1, =IOMUXC_SW_PAD_CTL(0x2b)
+	ldr r0, [r1, #0x6C]
+	bic r0, r0, #(1 << 12)
+	str r0, [r1, #0x6C]
+
+	/* CAS */
+	ldr r0, [r1, #0x70]
+	bic r0, r0, #(1 << 22)
+	str r0, [r1, #0x70]
+
+	/* RAS */
+	ldr r0, [r1, #0x74]
+	bic r0, r0, #(1 << 2)
+	str r0, [r1, #0x74]
+
+	/* CS2 (CSD0) */
+	ldr r0, [r1, #0x7C]
+	bic r0, r0, #(1 << 22)
+	str r0, [r1, #0x7C]
+
+	/* DQM3 */
+	ldr r0, [r1, #0x84]
+	bic r0, r0, #(1 << 22)
+	str r0, [r1, #0x84]
+
+	/* DQM2, DQM1, DQM0, SD31-SD0, A25-A0, MA10 (0x288..0x2DC) */
+	ldr r2, =22	/* (0x2E0 - 0x288) / 4 = 22 */
+pad_loop:
+	ldr r0, [r1, #0x88]
+	bic r0, r0, #(1 << 22)
+	bic r0, r0, #(1 << 12)
+	bic r0, r0, #(1 << 2)
+	str r0, [r1, #0x88]
+	add r1, r1, #4
+	subs r2, r2, #0x1
+	bne pad_loop
+.endm /* init_drive_strength */
+
+.globl lowlevel_init
+lowlevel_init:
+
+	init_drive_strength
+
+	/* Image Processing Unit: */
+	/* Too early to switch display on? */
+	/* Switch on Display Interface */
+	REG	IPU_CONF, IPU_CONF_DI_EN
+	/* Clock Control Module: */
+	REG	CCM_CCMR, 0x074B0BF5		/* Use CKIH, MCU PLL off */
+
+	DELAY 0x40000
+
+	REG	CCM_CCMR, 0x074B0BF5 | CCMR_MPE			/* MCU PLL on */
+	/* Switch to MCU PLL */
+	REG	CCM_CCMR, (0x074B0BF5 | CCMR_MPE) & ~CCMR_MDS
+
+	/* 399-133-66.5 */
+	ldr	r0, =CCM_BASE
+	ldr	r1, =0xFF871650
+	/* PDR0 */
+	str	r1, [r0, #0x4]
+	ldr	r1, MPCTL_PARAM_399
+	/* MPCTL */
+	str	r1, [r0, #0x10]
+
+	/* Set UPLL=240MHz, USB=60MHz */
+	ldr	r1, =0x49FCFE7F
+	/* PDR1 */
+	str	r1, [r0, #0x8]
+	ldr	r1, UPCTL_PARAM_240
+	/* UPCTL */
+	str	r1, [r0, #0x14]
+	/* default CLKO to 1/8 of the ARM core */
+	mov	r1, #0x00000208
+	/* COSR */
+	str	r1, [r0, #0x1c]
+
+	/* Default: 1, 4, 12, 1 */
+	REG	CCM_SPCTL, PLL_PD(1) | PLL_MFD(4) | PLL_MFI(12) | PLL_MFN(1)
+
+check_ddr_module:
+/* Set stackpointer in internal RAM to call get_ram_size */
+	ldr	sp, =(IRAM_BASE_ADDR + IRAM_SIZE - 16)
+	stmfd	sp!, {r0-r11, ip, lr}
+	mov	ip, lr		/* save link reg across call */
+
+	ldr	r0,=0x08000000
+	SETUP_RAM	ESDCFG0_256MB, ESDCTL0_256MB
+	ldr	r0,=0x80000000
+	ldr	r1,=0x10000000
+	bl	get_ram_size
+	ldr	r1,=0x10000000
+	cmp	r0,r1
+	beq	restore_regs
+	SETUP_RAM	ESDCFG0_128MB, ESDCTL0_128MB
+	ldr	r0,=0x80000000
+	ldr	r1,=0x08000000
+	bl	get_ram_size
+	ldr	r1,=0x08000000
+	cmp	r0,r1
+	beq	restore_regs
+
+restore_regs:
+	ldmfd	sp!, {r0-r11, ip, lr}
+	mov	lr, ip		/* restore link reg */
+
+	mov	pc, lr
+
+
+MPCTL_PARAM_399:
+	.word (((1 - 1) << 26) + ((52 - 1) << 16) + (7 << 10) + (35 << 0))
+UPCTL_PARAM_240:
+	.word (((2 - 1) << 26) + ((13 - 1) << 16) + (9 << 10) + (3  << 0))
+
+	.equ	ESDCFG0_128MB, \
+		(0 << 21) + /* tXP */ \
+		(1 << 20) + /* tWTR */ \
+		(2 << 18) + /* tRP */ \
+		(1 << 16) + /* tMRD */ \
+		(0 << 15) + /* tWR */ \
+		(5 << 12) + /* tRAS */ \
+		(1 << 10) + /* tRRD */ \
+		(3 << 8) + /* tCAS */ \
+		(2 << 4) + /* tRCD */ \
+		(0x0F << 0) /* tRC */
+
+	.equ	ESDCTL0_128MB, \
+		(1 << 31)  +	/* enable */ \
+		(0 << 28)  +	/* mode */ \
+		(0 << 27)  +	/* supervisor protect */ \
+		(2 << 24)  +	/* 13 rows */ \
+		(2 << 20)  +	/* 10 cols */ \
+		(2 << 16)  +	/* 32 bit */ \
+		(3 << 13)  +	/* 7.81us (64ms/8192) */ \
+		(0 << 10)  +	/* power down timer */ \
+		(0 << 8)  +	/* full page */ \
+		(1 << 7)  +	/* burst length */ \
+		(0 << 0)	/* precharge timer */
+
+	.equ	ESDCFG0_256MB, \
+		(3 << 21)  + 	/* tXP */ \
+		(0 << 20)  + 	/* tWTR */ \
+		(2 << 18)  + 	/* tRP */ \
+		(1 << 16)  + 	/* tMRD */ \
+		(0 << 15)  + 	/* tWR */ \
+		(5 << 12)  + 	/* tRAS */ \
+		(1 << 10)  + 	/* tRRD */ \
+		(3 << 8)   + 	/* tCAS */ \
+		(2 << 4)   +	/* tRCD */ \
+		(7 << 0)	/* tRC */
+
+	.equ	ESDCTL0_256MB, \
+		(1 << 31)  + \
+		(0 << 28)  + \
+		(0 << 27)  + \
+		(3 << 24)  + /* 14 rows */ \
+		(2 << 20)  + /* 10 cols */ \
+		(2 << 16)  + \
+		(4 << 13)  + /* 3.91us (64ms/16384) */ \
+		(0 << 10)  + \
+		(0 << 8)   + \
+		(1 << 7)   + \
+		(0 << 0)