diff options
Diffstat (limited to 'board/samsung/smdkv310/lowlevel_init.S')
| -rw-r--r-- | board/samsung/smdkv310/lowlevel_init.S | 414 |
1 files changed, 0 insertions, 414 deletions
diff --git a/board/samsung/smdkv310/lowlevel_init.S b/board/samsung/smdkv310/lowlevel_init.S deleted file mode 100644 index 31e0e2eda..000000000 --- a/board/samsung/smdkv310/lowlevel_init.S +++ /dev/null @@ -1,414 +0,0 @@ -/* - * Lowlevel setup for SMDKV310 board based on EXYNOS4210 - * - * Copyright (C) 2011 Samsung Electronics - * - * 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> - -/* - * Register usages: - * - * r5 has zero always - * r7 has GPIO part1 base 0x11400000 - * r6 has GPIO part2 base 0x11000000 - */ - -#define MEM_DLLl_ON - -_TEXT_BASE: - .word CONFIG_SYS_TEXT_BASE - - .globl lowlevel_init -lowlevel_init: - push {lr} - - /* r5 has always zero */ - mov r5, #0 - ldr r7, =EXYNOS4_GPIO_PART1_BASE - ldr r6, =EXYNOS4_GPIO_PART2_BASE - - /* check reset status */ - ldr r0, =(EXYNOS4_POWER_BASE + 0x81C) @ INFORM7 - ldr r1, [r0] - - /* AFTR wakeup reset */ - ldr r2, =S5P_CHECK_DIDLE - cmp r1, r2 - beq exit_wakeup - - /* Sleep wakeup reset */ - ldr r2, =S5P_CHECK_SLEEP - cmp r1, r2 - beq wakeup_reset - - /* - * If U-boot is already running in ram, no need to relocate U-Boot. - * Memory controller must be configured before relocating U-Boot - * in ram. - */ - ldr r0, =0x00ffffff /* r0 <- Mask Bits*/ - bic r1, pc, r0 /* pc <- current addr of code */ - /* r1 <- unmasked bits of pc */ - - ldr r2, _TEXT_BASE /* r2 <- original base addr in ram */ - bic r2, r2, r0 /* r2 <- unmasked bits of r2*/ - cmp r1, r2 /* compare r1, r2 */ - beq 1f /* r0 == r1 then skip sdram init */ - - /* init system clock */ - bl system_clock_init - - /* Memory initialize */ - bl mem_ctrl_asm_init - -1: - /* for UART */ - bl uart_asm_init - bl arch_cpu_init - bl tzpc_init - pop {pc} - -wakeup_reset: - bl system_clock_init - bl mem_ctrl_asm_init - bl arch_cpu_init - bl tzpc_init - -exit_wakeup: - /* Load return address and jump to kernel */ - ldr r0, =(EXYNOS4_POWER_BASE + 0x800) @ INFORM0 - - /* r1 = physical address of exynos4210_cpu_resume function */ - ldr r1, [r0] - - /* Jump to kernel*/ - mov pc, r1 - nop - nop - -/* - * system_clock_init: Initialize core clock and bus clock. - * void system_clock_init(void) - */ -system_clock_init: - push {lr} - 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 -2: subs r1, r1, #1 - bne 2b - - ldr r1, =0x00 - ldr r2, =0x0C210 @CLK_SRC_TOP0 - str r1, [r0, r2] - - ldr r1, =0x00 - ldr r2, =0x0C214 @CLK_SRC_TOP1_OFFSET - str r1, [r0, r2] - - /* DMC */ - ldr r1, =0x00 - ldr r2, =0x10200 @CLK_SRC_DMC_OFFSET - str r1, [r0, r2] - - /*CLK_SRC_LEFTBUS */ - ldr r1, =0x00 - ldr r2, =0x04200 @CLK_SRC_LEFTBUS_OFFSET - str r1, [r0, r2] - - /*CLK_SRC_RIGHTBUS */ - ldr r1, =0x00 - ldr r2, =0x08200 @CLK_SRC_RIGHTBUS_OFFSET - str r1, [r0, r2] - - /* SATA: SCLKMPLL(0), MMC[0:4]: SCLKMPLL(6) */ - ldr r1, =0x066666 - ldr r2, =0x0C240 @ CLK_SRC_FSYS - str r1, [r0, r2] - - /* UART[0:4], PWM: SCLKMPLL(6) */ - ldr r1, =0x06666666 - ldr r2, =0x0C250 @CLK_SRC_PERIL0_OFFSET - str r1, [r0, r2] - - /* wait ?us */ - mov r1, #0x10000 -3: subs r1, r1, #1 - bne 3b - - /* - * CLK_DIV_CPU0: - * - * PCLK_DBG_RATIO[20] 0x1 - * ATB_RATIO[16] 0x3 - * PERIPH_RATIO[12] 0x3 - * COREM1_RATIO[8] 0x7 - * COREM0_RATIO[4] 0x3 - */ - ldr r1, =0x0133730 - ldr r2, =0x14500 @CLK_DIV_CPU0_OFFSET - str r1, [r0, r2] - - /* CLK_DIV_CPU1: COPY_RATIO [0] 0x3 */ - ldr r1, =0x03 - ldr r2, =0x14504 @CLK_DIV_CPU1_OFFSET - str r1, [r0, r2] - - /* - * CLK_DIV_DMC0: - * - * CORE_TIMERS_RATIO[28] 0x1 - * COPY2_RATIO[24] 0x3 - * DMCP_RATIO[20] 0x1 - * DMCD_RATIO[16] 0x1 - * DMC_RATIO[12] 0x1 - * DPHY_RATIO[8] 0x1 - * ACP_PCLK_RATIO[4] 0x1 - * ACP_RATIO[0] 0x3 - */ - ldr r1, =0x13111113 - ldr r2, =0x010500 @CLK_DIV_DMC0_OFFSET - str r1, [r0, r2] - - /* - * CLK_DIV_DMC1: - * - * DPM_RATIO[24] 0x1 - * DVSEM_RATIO[16] 0x1 - * PWI_RATIO[8] 0x1 - */ - ldr r1, =0x01010100 - ldr r2, =0x010504 @CLK_DIV_DMC1_OFFSET - str r1, [r0, r2] - - /* - * CLK_DIV_LEFRBUS: - * - * GPL_RATIO[4] 0x1 - * GDL_RATIO[0] 0x3 - */ - ldr r1, =0x013 - ldr r2, =0x04500 @CLK_DIV_LEFTBUS_OFFSET - str r1, [r0, r2] - - /* - * CLK_DIV_RIGHTBUS: - * - * GPR_RATIO[4] 0x1 - * GDR_RATIO[0] 0x3 - */ - ldr r1, =0x013 - ldr r2, =0x08500 @CLK_DIV_RIGHTBUS_OFFSET - str r1, [r0, r2] - - /* - * CLK_DIV_TOP: - * - * ONENAND_RATIO[16] 0x0 - * ACLK_133_RATIO[12] 0x5 - * ACLK_160_RATIO[8] 0x4 - * ACLK_100_RATIO[4] 0x7 - * ACLK_200_RATIO[0] 0x3 - */ - ldr r1, =0x05473 - ldr r2, =0x0C510 @CLK_DIV_TOP_OFFSET - 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] - - /* wait ?us */ - mov r1, #0x10000 -4: subs r1, r1, #1 - bne 4b - - /* - * CLK_DIV_PERIL0: - * - * UART5_RATIO[20] 8 - * UART4_RATIO[16] 8 - * UART3_RATIO[12] 8 - * UART2_RATIO[8] 8 - * UART1_RATIO[4] 8 - * UART0_RATIO[0] 8 - */ - ldr r1, =0x774777 - ldr r2, =0x0C550 @CLK_DIV_PERIL0_OFFSET - str r1, [r0, r2] - - /* SLIMBUS: ???, PWM */ - ldr r1, =0x8 - ldr r2, =0x0C55C @ CLK_DIV_PERIL3 - str r1, [r0, r2] - - /* Set PLL locktime */ - ldr r1, =0x01C20 - ldr r2, =0x014000 @APLL_LOCK_OFFSET - str r1, [r0, r2] - ldr r1, =0x01C20 - ldr r2, =0x014008 @MPLL_LOCK_OFFSET - str r1, [r0, r2] - ldr r1, =0x01C20 - ldr r2, =0x0C010 @EPLL_LOCK_OFFSET - str r1, [r0, r2] - ldr r1, =0x01C20 - ldr r2, =0x0C020 @VPLL_LOCK_OFFSET - str r1, [r0, r2] - - /* - * APLL_CON1: - * - * APLL_AFC_ENB[31] 0x1 - * APLL_AFC[0] 0xC - */ - ldr r1, =0x8000000C - ldr r2, =0x014104 @APLL_CON1_OFFSET - str r1, [r0, r2] - - /* - * APLL_CON0: - * - * APLL_MDIV[16] 0xFA - * APLL_PDIV[8] 0x6 - * APLL_SDIV[0] 0x1 - */ - ldr r1, =0x80FA0601 - ldr r2, =0x014100 @APLL_CON0_OFFSET - str r1, [r0, r2] - - /* - * MPLL_CON1: - * - * MPLL_AFC_ENB[31] 0x1 - * MPLL_AFC[0] 0x1C - */ - ldr r1, =0x0000001C - ldr r2, =0x01410C @MPLL_CON1_OFFSET - str r1, [r0, r2] - - /* - * MPLL_CON0: - * - * MPLL_MDIV[16] 0xC8 - * MPLL_PDIV[8] 0x6 - * MPLL_SDIV[0] 0x1 - */ - ldr r1, =0x80C80601 - ldr r2, =0x014108 @MPLL_CON0_OFFSET - str r1, [r0, r2] - - /* EPLL */ - ldr r1, =0x0 - ldr r2, =0x0C114 @EPLL_CON1_OFFSET - str r1, [r0, r2] - - /* - * EPLL_CON0: - * - * EPLL_MDIV[16] 0x30 - * EPLL_PDIV[8] 0x3 - * EPLL_SDIV[0] 0x2 - */ - ldr r1, =0x80300302 - ldr r2, =0x0C110 @EPLL_CON0_OFFSET - str r1, [r0, r2] - - /* - * VPLL_CON1: - * - * VPLL_MRR[24] 0x11 - * VPLL_MFR[16] 0x0 - * VPLL_K[0] 0x400 - */ - ldr r1, =0x11000400 - ldr r2, =0x0C124 @VPLL_CON1_OFFSET - str r1, [r0, r2] - - /* - * VPLL_CON0: - * - * VPLL_MDIV[16] 0x35 - * VPLL_PDIV[8] 0x3 - * VPLL_SDIV[0] 0x2 - */ - ldr r1, =0x80350302 - ldr r2, =0x0C120 @VPLL_CON0_OFFSET - str r1, [r0, r2] - - /* wait ?us */ - mov r1, #0x30000 -3: subs r1, r1, #1 - bne 3b - - pop {pc} -/* - * uart_asm_init: Initialize UART in asm mode, 115200bps fixed. - * void uart_asm_init(void) - */ - .globl uart_asm_init -uart_asm_init: - - /* setup UART0-UART3 GPIOs (part1) */ - mov r0, r7 - ldr r1, =0x22222222 - str r1, [r0, #0x00] @ EXYNOS4_GPIO_A0_OFFSET - ldr r1, =0x00222222 - str r1, [r0, #0x20] @ EXYNOS4_GPIO_A1_OFFSET - - ldr r0, =EXYNOS4_UART_BASE - add r0, r0, #EXYNOS4_DEFAULT_UART_OFFSET - - ldr r1, =0x3C5 - str r1, [r0, #0x4] - ldr r1, =0x111 - str r1, [r0, #0x8] - ldr r1, =0x3 - str r1, [r0, #0x0] - ldr r1, =0x35 - str r1, [r0, #0x28] - ldr r1, =0x4 - str r1, [r0, #0x2c] - - mov pc, lr - nop - nop - nop |