--- /dev/null
+/*
+ * 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 <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
+ */
+
+ .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
Code Review / kvmfornfv.git / blobdiff