/* * Memory Setup stuff - taken from blob memsetup.S * * Copyright (C) 2009 Samsung Electronics * Kyungmin Park <kyungmin.park@samsung.com> * * SPDX-License-Identifier: GPL-2.0+ */ #include <config.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 */ .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, =S5PC110_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 bic r1, r1, #(1 << 1) 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] /* 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] /* 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 /* 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 /* for UART */ bl uart_asm_init bl internal_ram_init 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] 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, =S5PC110_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, =S5PC110_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 internal_ram_init: ldreq r0, =0xE3800000 ldrne r0, =0xF1500000 ldr r1, =0x0 str r1, [r0] mov pc, lr /* * 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