[U-Boot] [PATCH 4/4] arm:exynos4:universal_c210: Eliminate low level initialisation
Piotr Wilczek
p.wilczek at samsung.com
Fri Aug 10 12:12:22 CEST 2012
The low level initialisation is not necessary in U-boot
since it is done by another bootloader.
Signed-off-by: Piotr Wilczek <p.wilczek at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
CC: Minkyu Kang <mk7.kang at samsung.com>
---
board/samsung/universal_c210/Makefile | 1 -
board/samsung/universal_c210/lowlevel_init.S | 395 --------------------------
board/samsung/universal_c210/universal.c | 7 +
include/configs/s5pc210_universal.h | 2 +
4 files changed, 9 insertions(+), 396 deletions(-)
delete mode 100644 board/samsung/universal_c210/lowlevel_init.S
diff --git a/board/samsung/universal_c210/Makefile b/board/samsung/universal_c210/Makefile
index bfec08f..587cc1b 100644
--- a/board/samsung/universal_c210/Makefile
+++ b/board/samsung/universal_c210/Makefile
@@ -26,7 +26,6 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).o
COBJS-y := universal.o onenand.o
-SOBJS := lowlevel_init.o
SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS-y))
diff --git a/board/samsung/universal_c210/lowlevel_init.S b/board/samsung/universal_c210/lowlevel_init.S
deleted file mode 100644
index dc7f69e..0000000
--- a/board/samsung/universal_c210/lowlevel_init.S
+++ /dev/null
@@ -1,395 +0,0 @@
-/*
- * Lowlevel setup for universal board based on EXYNOS4210
- *
- * Copyright (C) 2010 Samsung Electronics
- * Kyungmin Park <kyungmin.park at samsung.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>
-#include <asm/arch/cpu.h>
-#include <asm/arch/clock.h>
-
-/*
- * Register usages:
- *
- * r5 has zero always
- * r7 has GPIO part1 base 0x11400000
- * r6 has GPIO part2 base 0x11000000
- */
-
- .globl lowlevel_init
-lowlevel_init:
- mov r11, lr
-
- /* r5 has always zero */
- mov r5, #0
-
- ldr r7, =EXYNOS4_GPIO_PART1_BASE
- ldr r6, =EXYNOS4_GPIO_PART2_BASE
-
- /* System Timer */
- ldr r0, =EXYNOS4_SYSTIMER_BASE
- ldr r1, =0x5000
- str r1, [r0, #0x0]
- ldr r1, =0xffffffff
- str r1, [r0, #0x8]
- ldr r1, =0x49
- str r1, [r0, #0x4]
-
- /* PMIC manual reset */
- /* nPOWER: XEINT_23: GPX2[7] */
- add r0, r6, #0xC40 @ EXYNOS4_GPIO_X2_OFFSET
- ldr r1, [r0, #0x0]
- bic r1, r1, #(0xf << 28) @ 28 = 7 * 4-bit
- orr r1, r1, #(0x1 << 28) @ Output
- str r1, [r0, #0x0]
-
- ldr r1, [r0, #0x4]
- orr r1, r1, #(1 << 7) @ 7 = 7 * 1-bit
- str r1, [r0, #0x4]
-
- /* init system clock */
- bl system_clock_init
-
- /* Disable Watchdog */
- ldr r0, =EXYNOS4_WATCHDOG_BASE @0x10060000
- str r5, [r0]
-
- /* UART */
- bl uart_asm_init
-
- /* PMU init */
- bl system_power_init
-
- bl tzpc_init
-
- mov lr, r11
- mov pc, lr
- nop
- nop
- nop
-
-/*
- * uart_asm_init: Initialize UART's pins
- */
-uart_asm_init:
- /*
- * setup UART0-UART4 GPIOs (part1)
- * GPA1CON[3] = I2C_3_SCL (3)
- * GPA1CON[2] = I2C_3_SDA (3)
- */
- mov r0, r7
- ldr r1, =0x22222222
- str r1, [r0, #0x00] @ EXYNOS4_GPIO_A0_OFFSET
- ldr r1, =0x00223322
- str r1, [r0, #0x20] @ EXYNOS4_GPIO_A1_OFFSET
-
- /* UART_SEL GPY4[7] (part2) at EXYNOS4 */
- add r0, r6, #0x1A0 @ EXYNOS4_GPIO_Y4_OFFSET
- ldr r1, [r0, #0x0]
- bic r1, r1, #(0xf << 28) @ 28 = 7 * 4-bit
- orr r1, r1, #(0x1 << 28)
- str r1, [r0, #0x0]
-
- ldr r1, [r0, #0x8]
- bic r1, r1, #(0x3 << 14) @ 14 = 7 * 2-bit
- orr r1, r1, #(0x3 << 14) @ Pull-up enabled
- str r1, [r0, #0x8]
-
- ldr r1, [r0, #0x4]
- orr r1, r1, #(1 << 7) @ 7 = 7 * 1-bit
- str r1, [r0, #0x4]
-
- mov pc, lr
- nop
- nop
- nop
-
-system_clock_init:
- ldr r0, =EXYNOS4_CLOCK_BASE
-
- /* APLL(1), MPLL(1), CORE(0), HPM(0) */
- ldr r1, =0x0101
- ldr r2, =0x14200 @ CLK_SRC_CPU
- str r1, [r0, r2]
-
- /* wait ?us */
- mov r1, #0x10000
-1: subs r1, r1, #1
- bne 1b
-
- /*
- * CLK_SRC_TOP0
- * MUX_ONENAND_SEL[28] 0: DOUT133, 1: DOUT166
- * MUX_VPLL_SEL[8] 0: FINPLL, 1: FOUTVPLL
- * MUX_EPLL_SEL[4] 0: FINPLL, 1: FOUTEPLL
- */
- ldr r1, =0x10000110
- ldr r2, =0x0C210 @ CLK_SRC_TOP
- str r1, [r0, r2]
-
- /* SATA: SCLKMPLL(0), MMC[0:4]: SCLKMPLL(6) */
- ldr r1, =0x0066666
- ldr r2, =0x0C240 @ CLK_SRC_FSYS
- str r1, [r0, r2]
- /* UART[0:5], PWM: SCLKMPLL(6) */
- ldr r1, =0x6666666
- ldr r2, =0x0C250 @ CLK_SRC_PERIL0_OFFSET
- str r1, [r0, r2]
-
- /* CPU0: CORE, COREM0, COREM1, PERI, ATB, PCLK_DBG, APLL */
- ldr r1, =0x0133730
- ldr r2, =0x14500 @ CLK_DIV_CPU0
- str r1, [r0, r2]
- /* CPU1: COPY, HPM */
- ldr r1, =0x03
- ldr r2, =0x14504 @ CLK_DIV_CPU1
- str r1, [r0, r2]
- /* DMC0: ACP, ACP_PCLK, DPHY, DMC, DMCD, DMCP, COPY2 CORE_TIMER */
- ldr r1, =0x13111113
- ldr r2, =0x10500 @ CLK_DIV_DMC0
- str r1, [r0, r2]
- /* DMC1: PWI, DVSEM, DPM */
- ldr r1, =0x01010100
- ldr r2, =0x10504 @ CLK_DIV_DMC1
- str r1, [r0, r2]
- /* LEFTBUS: GDL, GPL */
- ldr r1, =0x13
- ldr r2, =0x04500 @ CLK_DIV_LEFTBUS
- str r1, [r0, r2]
- /* RIGHHTBUS: GDR, GPR */
- ldr r1, =0x13
- ldr r2, =0x08500 @ CLK_DIV_RIGHTBUS
- str r1, [r0, r2]
- /*
- * CLK_DIV_TOP
- * ONENAND_RATIOD[18:16]: 0 SCLK_ONENAND = MOUTONENAND / (n + 1)
- * ACLK_200, ACLK_100, ACLK_160, ACLK_133,
- */
- ldr r1, =0x00005473
- ldr r2, =0x0C510 @ CLK_DIV_TOP
- str r1, [r0, r2]
- /* MMC[0:1] */
- ldr r1, =0x000f000f /* 800(MPLL) / (15 + 1) */
- ldr r2, =0x0C544 @ CLK_DIV_FSYS1
- str r1, [r0, r2]
- /* MMC[2:3] */
- ldr r1, =0x000f000f /* 800(MPLL) / (15 + 1) */
- ldr r2, =0x0C548 @ CLK_DIV_FSYS2
- str r1, [r0, r2]
- /* MMC4 */
- ldr r1, =0x000f /* 800(MPLL) / (15 + 1) */
- ldr r2, =0x0C54C @ CLK_DIV_FSYS3
- str r1, [r0, r2]
- /* UART[0:5] */
- ldr r1, =0x774777
- ldr r2, =0x0C550 @ CLK_DIV_PERIL0
- str r1, [r0, r2]
- /* SLIMBUS: ???, PWM */
- ldr r1, =0x8
- ldr r2, =0x0C55C @ CLK_DIV_PERIL3
- str r1, [r0, r2]
-
- /* PLL Setting */
- ldr r1, =0x1C20
- ldr r2, =0x14000 @ APLL_LOCK
- str r1, [r0, r2]
- ldr r2, =0x14008 @ MPLL_LOCK
- str r1, [r0, r2]
- ldr r2, =0x0C010 @ EPLL_LOCK
- str r1, [r0, r2]
- ldr r2, =0x0C020 @ VPLL_LOCK
- str r1, [r0, r2]
-
- /* APLL */
- ldr r1, =0x8000001c
- ldr r2, =0x14104 @ APLL_CON1
- str r1, [r0, r2]
- ldr r1, =0x80c80601 @ 800MHz
- ldr r2, =0x14100 @ APLL_CON0
- str r1, [r0, r2]
- /* MPLL */
- ldr r1, =0x8000001C
- ldr r2, =0x1410C @ MPLL_CON1
- str r1, [r0, r2]
- ldr r1, =0x80c80601 @ 800MHz
- ldr r2, =0x14108 @ MPLL_CON0
- str r1, [r0, r2]
- /* EPLL */
- ldr r1, =0x0
- ldr r2, =0x0C114 @ EPLL_CON1
- str r1, [r0, r2]
- ldr r1, =0x80300302 @ 96MHz
- ldr r2, =0x0C110 @ EPLL_CON0
- str r1, [r0, r2]
- /* VPLL */
- ldr r1, =0x11000400
- ldr r2, =0x0C124 @ VPLL_CON1
- str r1, [r0, r2]
- ldr r1, =0x80350302 @ 108MHz
- ldr r2, =0x0C120 @ VPLL_CON0
- str r1, [r0, r2]
-
- /*
- * SMMUJPEG[11], JPEG[6], CSIS1[5] : 0111 1001
- * Turn off all
- */
- ldr r1, =0xFFF80000
- ldr r2, =0x0C920 @ CLK_GATE_IP_CAM
- str r1, [r0, r2]
-
- /* Turn off all */
- ldr r1, =0xFFFFFFC0
- ldr r2, =0x0C924 @ CLK_GATE_IP_VP
- str r1, [r0, r2]
-
- /* Turn off all */
- ldr r1, =0xFFFFFFE0
- ldr r2, =0x0C928 @ CLK_GATE_IP_MFC
- str r1, [r0, r2]
-
- /* Turn off all */
- ldr r1, =0xFFFFFFFC
- ldr r2, =0x0C92C @ CLK_GATE_IP_G3D
- str r1, [r0, r2]
-
- /* Turn off all */
- ldr r1, =0xFFFFFC00
- ldr r2, =0x0C930 @ CLK_GATE_IP_IMAGE
- str r1, [r0, r2]
-
- /* DSIM0[3], MDNIE0[2], MIE0[1] : 0001 */
- ldr r1, =0xFFFFFFF1
- ldr r2, =0x0C934 @ CLK_GATE_IP_LCD0
- str r1, [r0, r2]
-
- /* Turn off all */
- ldr r1, =0xFFFFFFC0
- ldr r2, =0x0C938 @ CLK_GATE_IP_LCD1
- str r1, [r0, r2]
-
- /*
- * SMMUPCIE[18], NFCON[16] : 1111 1010
- * PCIE[14], SATA[10], SDMMC43[9:8] : 1011 1000
- * SDMMC1[6], TSI[4], SATAPHY[3], PCIEPHY[2] : 1010 0011
- */
- ldr r1, =0xFFFAB8A3
- ldr r2, =0x0C940 @ CLK_GATE_IP_FSYS
- str r1, [r0, r2]
-
- /* Turn off all */
- ldr r1, =0xFFFFFFFC
- ldr r2, =0x0C94C @ CLK_GATE_IP_GPS
- str r1, [r0, r2]
-
- /*
- * AC97[27], SPDIF[26], SLIMBUS[25] : 1111 0001
- * I2C2[8] : 1111 1110
- */
- ldr r1, =0xF1FFFEFF
- ldr r2, =0x0C950 @ CLK_GATE_IP_PERIL
- str r1, [r0, r2]
-
- /*
- * KEYIF[16] : 1111 1110
- */
- ldr r1, =0xFFFEFFFF
- ldr r2, =0x0C960 @ CLK_GATE_IP_PERIR
- str r1, [r0, r2]
-
- /* LCD1[5], G3D[3], MFC[2], TV[1] : 1101 0001 */
- ldr r1, =0xFFFFFFD1
- ldr r2, =0x0C970 @ CLK_GATE_BLOCK
- str r1, [r0, r2]
- mov pc, lr
- nop
- nop
- nop
-
-system_power_init:
- ldr r0, =EXYNOS4_POWER_BASE @ 0x10020000
-
- ldr r2, =0x330C @ PS_HOLD_CONTROL
- ldr r1, [r0, r2]
- orr r1, r1, #(0x3 << 8) @ Data High, Output En
- str r1, [r0, r2]
-
- /* Power Down */
- add r2, r0, #0x3000
- str r5, [r2, #0xC20] @ TV_CONFIGURATION
- str r5, [r2, #0xC40] @ MFC_CONFIGURATION
- str r5, [r2, #0xC60] @ G3D_CONFIGURATION
- str r5, [r2, #0xCA0] @ LCD1_CONFIGURATION
- str r5, [r2, #0xCE0] @ GPS_CONFIGURATION
-
- mov pc, lr
- nop
- nop
- nop
-
-tzpc_init:
- ldr r0, =0x10110000
- mov r1, #0x0
- str r1, [r0]
- mov r1, #0xff
- str r1, [r0, #0x0804]
- str r1, [r0, #0x0810]
- str r1, [r0, #0x081C]
- str r1, [r0, #0x0828]
-
- ldr r0, =0x10120000
- mov r1, #0x0
- str r1, [r0]
- mov r1, #0xff
- str r1, [r0, #0x0804]
- str r1, [r0, #0x0810]
- str r1, [r0, #0x081C]
- str r1, [r0, #0x0828]
-
- ldr r0, =0x10130000
- mov r1, #0x0
- str r1, [r0]
- mov r1, #0xff
- str r1, [r0, #0x0804]
- str r1, [r0, #0x0810]
- str r1, [r0, #0x081C]
- str r1, [r0, #0x0828]
-
- ldr r0, =0x10140000
- mov r1, #0x0
- str r1, [r0]
- mov r1, #0xff
- str r1, [r0, #0x0804]
- str r1, [r0, #0x0810]
- str r1, [r0, #0x081C]
- str r1, [r0, #0x0828]
-
- ldr r0, =0x10150000
- mov r1, #0x0
- str r1, [r0]
- mov r1, #0xff
- str r1, [r0, #0x0804]
- str r1, [r0, #0x0810]
- str r1, [r0, #0x081C]
- str r1, [r0, #0x0828]
-
- mov pc, lr
diff --git a/board/samsung/universal_c210/universal.c b/board/samsung/universal_c210/universal.c
index a64eba0..f4d273b 100644
--- a/board/samsung/universal_c210/universal.c
+++ b/board/samsung/universal_c210/universal.c
@@ -226,3 +226,10 @@ struct s3c_plat_otg_data s5pc210_otg_data = {
.usb_flags = PHY0_SLEEP,
};
#endif
+
+int board_early_init_f(void)
+{
+ wdt_stop();
+
+ return 0;
+}
diff --git a/include/configs/s5pc210_universal.h b/include/configs/s5pc210_universal.h
index a332f28..7978317 100644
--- a/include/configs/s5pc210_universal.h
+++ b/include/configs/s5pc210_universal.h
@@ -56,6 +56,8 @@
#define CONFIG_INITRD_TAG
#define CONFIG_REVISION_TAG
#define CONFIG_CMDLINE_EDITING
+#define CONFIG_SKIP_LOWLEVEL_INIT
+#define CONFIG_BOARD_EARLY_INIT_F
/* Size of malloc() pool */
#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + (1 << 20))
--
1.7.5.4
More information about the U-Boot
mailing list