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Diffstat (limited to 'board/samsung/goni/lowlevel_init.S')
| -rw-r--r-- | board/samsung/goni/lowlevel_init.S | 585 |
1 files changed, 585 insertions, 0 deletions
diff --git a/board/samsung/goni/lowlevel_init.S b/board/samsung/goni/lowlevel_init.S new file mode 100644 index 0000000..4b72992 --- /dev/null +++ b/board/samsung/goni/lowlevel_init.S @@ -0,0 +1,585 @@ +/* + * Memory Setup stuff - taken from blob memsetup.S + * + * Copyright (C) 2009 Samsung Electronics + * Kyungmin Park <kyungmin.park@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> +#include <asm/arch/power.h> + +/* + * Register usages: + * + * r5 has zero always + * r7 has S5PC100 GPIO base, 0xE0300000 + * r8 has real GPIO base, 0xE0300000, 0xE0200000 at S5PC100, S5PC110 repectively + * r9 has Mobile DDR size, 1 means 1GiB, 2 means 2GiB and so on + */ + +_TEXT_BASE: + .word TEXT_BASE + + .globl lowlevel_init +lowlevel_init: + mov r11, lr + + /* r5 has always zero */ + mov r5, #0 + + ldr r7, =S5PC100_GPIO_BASE + ldr r8, =S5PC100_GPIO_BASE + /* Read CPU ID */ + ldr r2, =S5PC1XX_PRO_ID + ldr r0, [r2] + mov r1, #0x00010000 + and r0, r0, r1 + cmp r0, r5 + beq 100f + ldr r8, =S5PC110_GPIO_BASE +100: + /* Turn on KEY_LED_ON [GPJ4(1)] XMSMWEN */ + cmp r7, r8 + beq skip_check_didle @ Support C110 only + + ldr r0, =S5PC110_RST_STAT + ldr r1, [r0] + and r1, r1, #0x000D0000 + cmp r1, #(0x1 << 19) @ DEEPIDLE_WAKEUP + beq didle_wakeup + cmp r7, r8 + +skip_check_didle: + addeq r0, r8, #0x280 @ S5PC100_GPIO_J4 + addne r0, r8, #0x2C0 @ S5PC110_GPIO_J4 + ldr r1, [r0, #0x0] @ GPIO_CON_OFFSET + bic r1, r1, #(0xf << 4) @ 1 * 4-bit + orr r1, r1, #(0x1 << 4) + str r1, [r0, #0x0] @ GPIO_CON_OFFSET + + ldr r1, [r0, #0x4] @ GPIO_DAT_OFFSET +#ifdef CONFIG_ONENAND_IPL + orr r1, r1, #(1 << 1) @ 1 * 1-bit +#else + bic r1, r1, #(1 << 1) +#endif + str r1, [r0, #0x4] @ GPIO_DAT_OFFSET + + /* Don't setup at s5pc100 */ + beq 100f + + /* + * Initialize Async Register Setting for EVT1 + * Because we are setting EVT1 as the default value of EVT0, + * setting EVT0 as well does not make things worse. + * Thus, for the simplicity, we set for EVT0, too + * + * The "Async Registers" are: + * 0xE0F0_0000 + * 0xE1F0_0000 + * 0xF180_0000 + * 0xF190_0000 + * 0xF1A0_0000 + * 0xF1B0_0000 + * 0xF1C0_0000 + * 0xF1D0_0000 + * 0xF1E0_0000 + * 0xF1F0_0000 + * 0xFAF0_0000 + */ + ldr r0, =0xe0f00000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + ldr r0, =0xe1f00000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + ldr r0, =0xf1800000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + ldr r0, =0xf1900000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + ldr r0, =0xf1a00000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + ldr r0, =0xf1b00000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + ldr r0, =0xf1c00000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + ldr r0, =0xf1d00000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + ldr r0, =0xf1e00000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + ldr r0, =0xf1f00000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + ldr r0, =0xfaf00000 + ldr r1, [r0] + bic r1, r1, #0x1 + str r1, [r0] + + /* + * Diable ABB block to reduce sleep current at low temperature + * Note that it's hidden register setup don't modify it + */ + ldr r0, =0xE010C300 + ldr r1, =0x00800000 + str r1, [r0] + +100: + /* IO retension release */ + ldreq r0, =S5PC100_OTHERS @ 0xE0108200 + ldrne r0, =S5PC110_OTHERS @ 0xE010E000 + ldr r1, [r0] + ldreq r2, =(1 << 31) @ IO_RET_REL + ldrne r2, =((1 << 31) | (1 << 30) | (1 << 29) | (1 << 28)) + orr r1, r1, r2 + /* Do not release retention here for S5PC110 */ + streq r1, [r0] + +#ifndef CONFIG_ONENAND_IPL + /* Disable Watchdog */ + ldreq r0, =S5PC100_WATCHDOG_BASE @ 0xEA200000 + ldrne r0, =S5PC110_WATCHDOG_BASE @ 0xE2700000 + str r5, [r0] + + /* setting SRAM */ + ldreq r0, =S5PC100_SROMC_BASE + ldrne r0, =S5PC110_SROMC_BASE + ldr r1, =0x9 + str r1, [r0] +#endif + + /* S5PC100 has 3 groups of interrupt sources */ + ldreq r0, =S5PC100_VIC0_BASE @ 0xE4000000 + ldrne r0, =S5PC110_VIC0_BASE @ 0xF2000000 + add r1, r0, #0x00100000 + add r2, r0, #0x00200000 + + /* Disable all interrupts (VIC0, VIC1 and VIC2) */ + mvn r3, #0x0 + str r3, [r0, #0x14] @ INTENCLEAR + str r3, [r1, #0x14] @ INTENCLEAR + str r3, [r2, #0x14] @ INTENCLEAR + +#ifndef CONFIG_ONENAND_IPL + /* Set all interrupts as IRQ */ + str r5, [r0, #0xc] @ INTSELECT + str r5, [r1, #0xc] @ INTSELECT + str r5, [r2, #0xc] @ INTSELECT + + /* Pending Interrupt Clear */ + str r5, [r0, #0xf00] @ INTADDRESS + str r5, [r1, #0xf00] @ INTADDRESS + str r5, [r2, #0xf00] @ INTADDRESS +#endif + +#ifndef CONFIG_ONENAND_IPL + /* for UART */ + bl uart_asm_init + + bl internal_ram_init +#endif + +#ifdef CONFIG_ONENAND_IPL + /* init system clock */ + bl system_clock_init + + /* OneNAND Sync Read Support at S5PC110 only + * RM[15] : Sync Read + * BRWL[14:12] : 7 CLK + * BL[11:9] : Continuous + * VHF[3] : Very High Frequency Enable (Over 83MHz) + * HF[2] : High Frequency Enable (Over 66MHz) + * WM[1] : Sync Write + */ + cmp r7, r8 + ldrne r1, =0xE006 + ldrne r0, =0xB001E442 + strneh r1, [r0] + + /* + * GCE[26] : Gated Clock Enable + * RPE[17] : Enables Read Prefetch + */ + ldrne r1, =((1 << 26) | (1 << 17) | 0xE006) + ldrne r0, =0xB0600000 + strne r1, [r0, #0x100] @ ONENAND_IF_CTRL + ldrne r1, =0x1212 + strne r1, [r0, #0x108] + + /* Board detection to set proper memory configuration */ + cmp r7, r8 + moveq r9, #1 /* r9 has 1Gib default at s5pc100 */ + movne r9, #2 /* r9 has 2Gib default at s5pc110 */ + + ldr r2, =0xE0200200 + ldr r4, [r2, #0x48] + + bic r1, r4, #(0x3F << 4) /* PULLUP_DISABLE: 3 * 2-bit */ + bic r1, r1, #(0x3 << 2) /* PULLUP_DISABLE: 2 * 2-bit */ + bic r1, r1, #(0x3 << 14) /* PULLUP_DISABLE: 2 * 2-bit */ + str r1, [r2, #0x48] + /* For write completion */ + nop + nop + + ldr r3, [r2, #0x44] + and r1, r3, #(0x7 << 2) + mov r1, r1, lsr #2 + cmp r1, #0x5 + moveq r9, #3 + cmp r1, #0x6 + moveq r9, #1 + cmp r1, #0x7 + moveq r9, #2 + and r0, r3, #(0x1 << 1) + mov r0, r0, lsr #1 + orr r1, r1, r0, lsl #3 + cmp r1, #0x8 + moveq r9, #3 + and r1, r3, #(0x7 << 2) + mov r1, r1, lsr #2 + and r0, r3, #(0x1 << 7) + mov r0, r0, lsr #7 + orr r1, r1, r0, lsl #3 + cmp r1, #0x9 + moveq r9, #3 + str r4, [r2, #0x48] /* Restore PULLUP configuration */ + + bl mem_ctrl_asm_init + + /* Wakeup support. Don't know if it's going to be used, untested. */ + ldreq r0, =S5PC100_RST_STAT + ldrne r0, =S5PC110_RST_STAT + ldr r1, [r0] + biceq r1, r1, #0xfffffff7 + moveq r2, #(1 << 3) + bicne r1, r1, #0xfffeffff + movne r2, #(1 << 16) + cmp r1, r2 + bne 1f +wakeup: + /* turn off L2 cache */ + bl l2_cache_disable + + cmp r7, r8 + ldreq r0, =0xC100 + ldrne r0, =0xC110 + + /* invalidate L2 cache also */ + bl invalidate_dcache + + /* turn on L2 cache */ + bl l2_cache_enable + + cmp r7, r8 + /* Load return address and jump to kernel */ + ldreq r0, =S5PC100_INFORM0 + ldrne r0, =S5PC110_INFORM0 + + /* r1 = physical address of s5pc1xx_cpu_resume function */ + ldr r1, [r0] + + /* Jump to kernel (sleep-s5pc1xx.S) */ + mov pc, r1 + nop + nop +#else + cmp r7, r8 + /* Clear wakeup status register */ + ldreq r0, =S5PC100_WAKEUP_STAT + ldrne r0, =S5PC110_WAKEUP_STAT + ldr r1, [r0] + str r1, [r0] + + /* IO retension release */ + ldreq r0, =S5PC100_OTHERS @ 0xE0108200 + ldrne r0, =S5PC110_OTHERS @ 0xE010E000 + ldr r1, [r0] + ldreq r2, =(1 << 31) @ IO_RET_REL + ldrne r2, =((1 << 31) | (1 << 30) | (1 << 29) | (1 << 28)) + orr r1, r1, r2 + str r1, [r0] + +#endif + b 1f + +didle_wakeup: + /* Wait when APLL is locked */ + ldr r0, =0xE0100100 @ S5PC110_APLL_CON +lockloop: + ldr r1, [r0] + and r1, r1, #(1 << 29) + cmp r1, #(1 << 29) + bne lockloop + + ldr r0, =S5PC110_INFORM0 + ldr r1, [r0] + mov pc, r1 + nop + nop + nop + nop + nop + +1: + mov lr, r11 + mov pc, lr + +/* + * system_clock_init: Initialize core clock and bus clock. + * void system_clock_init(void) + */ +system_clock_init: + ldr r0, =S5PC1XX_CLOCK_BASE @ 0xE0100000 + + /* Check S5PC100 */ + cmp r7, r8 + bne 110f +100: + /* Set Lock Time */ + ldr r1, =0xe10 @ Locktime : 0xe10 = 3600 + str r1, [r0, #0x000] @ S5PC100_APLL_LOCK + str r1, [r0, #0x004] @ S5PC100_MPLL_LOCK + str r1, [r0, #0x008] @ S5PC100_EPLL_LOCK + str r1, [r0, #0x00C] @ S5PC100_HPLL_LOCK + + /* S5P_APLL_CON */ + ldr r1, =0x81bc0400 @ SDIV 0, PDIV 4, MDIV 444 (1333MHz) + str r1, [r0, #0x100] + /* S5P_MPLL_CON */ + ldr r1, =0x80590201 @ SDIV 1, PDIV 2, MDIV 89 (267MHz) + str r1, [r0, #0x104] + /* S5P_EPLL_CON */ + ldr r1, =0x80870303 @ SDIV 3, PDIV 3, MDIV 135 (67.5MHz) + str r1, [r0, #0x108] + /* S5P_HPLL_CON */ + ldr r1, =0x80600603 @ SDIV 3, PDIV 6, MDIV 96 + str r1, [r0, #0x10C] + + ldr r1, [r0, #0x300] + ldr r2, =0x00003fff + bic r1, r1, r2 + ldr r2, =0x00011301 + + orr r1, r1, r2 + str r1, [r0, #0x300] + ldr r1, [r0, #0x304] + ldr r2, =0x00011110 + orr r1, r1, r2 + str r1, [r0, #0x304] + ldr r1, =0x00000001 + str r1, [r0, #0x308] + + /* Set Source Clock */ + ldr r1, =0x00001111 @ A, M, E, HPLL Muxing + str r1, [r0, #0x200] @ S5PC1XX_CLK_SRC0 + + b 200f +110: + ldr r0, =0xE010C000 @ S5PC110_PWR_CFG + + /* Set OSC_FREQ value */ + ldr r1, =0xf + str r1, [r0, #0x100] @ S5PC110_OSC_FREQ + + /* Set MTC_STABLE value */ + ldr r1, =0xffffffff + str r1, [r0, #0x110] @ S5PC110_MTC_STABLE + + /* Set CLAMP_STABLE value */ + ldr r1, =0x3ff03ff + str r1, [r0, #0x114] @ S5PC110_CLAMP_STABLE + + ldr r0, =S5PC1XX_CLOCK_BASE @ 0xE0100000 + + /* Set Clock divider */ + ldr r1, =0x14131330 @ 1:1:4:4, 1:4:5 + str r1, [r0, #0x300] + ldr r1, =0x11110111 @ UART[3210]: MMC[3210] + str r1, [r0, #0x310] + + /* Set Lock Time */ + ldr r1, =0x2cf @ Locktime : 30us + str r1, [r0, #0x000] @ S5PC110_APLL_LOCK + ldr r1, =0xe10 @ Locktime : 0xe10 = 3600 + str r1, [r0, #0x008] @ S5PC110_MPLL_LOCK + str r1, [r0, #0x010] @ S5PC110_EPLL_LOCK + str r1, [r0, #0x020] @ S5PC110_VPLL_LOCK + + /* S5PC110_APLL_CON */ + ldr r1, =0x80C80601 @ 800MHz + str r1, [r0, #0x100] + /* S5PC110_MPLL_CON */ + ldr r1, =0x829B0C01 @ 667MHz + str r1, [r0, #0x108] + /* S5PC110_EPLL_CON */ + ldr r1, =0x80600602 @ 96MHz VSEL 0 P 6 M 96 S 2 + str r1, [r0, #0x110] + /* S5PC110_VPLL_CON */ + ldr r1, =0x806C0603 @ 54MHz + str r1, [r0, #0x120] + + /* Set Source Clock */ + ldr r1, =0x10001111 @ A, M, E, VPLL Muxing + str r1, [r0, #0x200] @ S5PC1XX_CLK_SRC0 + + /* OneDRAM(DMC0) clock setting */ + ldr r1, =0x01000000 @ ONEDRAM_SEL[25:24] 1 SCLKMPLL + str r1, [r0, #0x218] @ S5PC110_CLK_SRC6 + ldr r1, =0x30000000 @ ONEDRAM_RATIO[31:28] 3 + 1 + str r1, [r0, #0x318] @ S5PC110_CLK_DIV6 + + /* XCLKOUT = XUSBXTI 24MHz */ + add r2, r0, #0xE000 @ S5PC110_OTHERS + ldr r1, [r2] + orr r1, r1, #(0x3 << 8) @ CLKOUT[9:8] 3 XUSBXTI + str r1, [r2] + + /* CLK_IP0 */ + ldr r1, =0x8fefeeb @ DMC[1:0] PDMA0[3] IMEM[5] + str r1, [r0, #0x460] @ S5PC110_CLK_IP0 + + /* CLK_IP1 */ + ldr r1, =0xe9fdf0f9 @ FIMD[0] USBOTG[16] + @ NANDXL[24] + str r1, [r0, #0x464] @ S5PC110_CLK_IP1 + + /* CLK_IP2 */ + ldr r1, =0xf75f7fc @ CORESIGHT[8] MODEM[9] + @ HOSTIF[10] HSMMC0[16] + @ HSMMC2[18] VIC[27:24] + str r1, [r0, #0x468] @ S5PC110_CLK_IP2 + + /* CLK_IP3 */ + ldr r1, =0x8eff038c @ I2C[8:6] + @ SYSTIMER[16] UART0[17] + @ UART1[18] UART2[19] + @ UART3[20] WDT[22] + @ PWM[23] GPIO[26] SYSCON[27] + str r1, [r0, #0x46c] @ S5PC110_CLK_IP3 + + /* CLK_IP4 */ + ldr r1, =0xfffffff1 @ CHIP_ID[0] TZPC[8:5] + str r1, [r0, #0x470] @ S5PC110_CLK_IP3 + +200: + /* wait at least 200us to stablize all clock */ + mov r2, #0x10000 +1: subs r2, r2, #1 + bne 1b + + mov pc, lr + +#ifndef CONFIG_ONENAND_IPL +internal_ram_init: + ldreq r0, =0xE3800000 + ldrne r0, =0xF1500000 + ldr r1, =0x0 + str r1, [r0] + + mov pc, lr +#endif + +#ifndef CONFIG_ONENAND_IPL +/* + * uart_asm_init: Initialize UART's pins + */ +uart_asm_init: + /* set GPIO to enable UART0-UART4 */ + mov r0, r8 + ldr r1, =0x22222222 + str r1, [r0, #0x0] @ S5PC100_GPIO_A0_OFFSET + ldr r1, =0x00002222 + str r1, [r0, #0x20] @ S5PC100_GPIO_A1_OFFSET + + /* Check S5PC100 */ + cmp r7, r8 + bne 110f + + /* UART_SEL GPK0[5] at S5PC100 */ + add r0, r8, #0x2A0 @ S5PC100_GPIO_K0_OFFSET + ldr r1, [r0, #0x0] @ S5PC1XX_GPIO_CON_OFFSET + bic r1, r1, #(0xf << 20) @ 20 = 5 * 4-bit + orr r1, r1, #(0x1 << 20) @ Output + str r1, [r0, #0x0] @ S5PC1XX_GPIO_CON_OFFSET + + ldr r1, [r0, #0x8] @ S5PC1XX_GPIO_PULL_OFFSET + bic r1, r1, #(0x3 << 10) @ 10 = 5 * 2-bit + orr r1, r1, #(0x2 << 10) @ Pull-up enabled + str r1, [r0, #0x8] @ S5PC1XX_GPIO_PULL_OFFSET + + ldr r1, [r0, #0x4] @ S5PC1XX_GPIO_DAT_OFFSET + orr r1, r1, #(1 << 5) @ 5 = 5 * 1-bit + str r1, [r0, #0x4] @ S5PC1XX_GPIO_DAT_OFFSET + + b 200f +110: + /* + * Note that the following address + * 0xE020'0360 is reserved address at S5PC100 + */ + /* UART_SEL MP0_5[7] at S5PC110 */ + add r0, r8, #0x360 @ S5PC110_GPIO_MP0_5_OFFSET + ldr r1, [r0, #0x0] @ S5PC1XX_GPIO_CON_OFFSET + bic r1, r1, #(0xf << 28) @ 28 = 7 * 4-bit + orr r1, r1, #(0x1 << 28) @ Output + str r1, [r0, #0x0] @ S5PC1XX_GPIO_CON_OFFSET + + ldr r1, [r0, #0x8] @ S5PC1XX_GPIO_PULL_OFFSET + bic r1, r1, #(0x3 << 14) @ 14 = 7 * 2-bit + orr r1, r1, #(0x2 << 14) @ Pull-up enabled + str r1, [r0, #0x8] @ S5PC1XX_GPIO_PULL_OFFSET + + ldr r1, [r0, #0x4] @ S5PC1XX_GPIO_DAT_OFFSET + orr r1, r1, #(1 << 7) @ 7 = 7 * 1-bit + str r1, [r0, #0x4] @ S5PC1XX_GPIO_DAT_OFFSET +200: + mov pc, lr +#endif |