445 lines
10 KiB
ArmAsm
445 lines
10 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Memory Setup stuff - taken from blob memsetup.S
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*
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* Copyright (C) 2009 Samsung Electronics
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* Kyungmin Park <kyungmin.park@samsung.com>
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*/
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#include <config.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/power.h>
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/*
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* Register usages:
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*
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* r5 has zero always
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* r7 has S5PC100 GPIO base, 0xE0300000
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* r8 has real GPIO base, 0xE0300000, 0xE0200000 at S5PC100, S5PC110 repectively
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* r9 has Mobile DDR size, 1 means 1GiB, 2 means 2GiB and so on
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*/
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.globl lowlevel_init
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lowlevel_init:
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mov r11, lr
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/* r5 has always zero */
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mov r5, #0
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ldr r7, =S5PC100_GPIO_BASE
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ldr r8, =S5PC100_GPIO_BASE
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/* Read CPU ID */
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ldr r2, =S5PC110_PRO_ID
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ldr r0, [r2]
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mov r1, #0x00010000
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and r0, r0, r1
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cmp r0, r5
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beq 100f
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ldr r8, =S5PC110_GPIO_BASE
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100:
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/* Turn on KEY_LED_ON [GPJ4(1)] XMSMWEN */
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cmp r7, r8
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beq skip_check_didle @ Support C110 only
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ldr r0, =S5PC110_RST_STAT
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ldr r1, [r0]
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and r1, r1, #0x000D0000
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cmp r1, #(0x1 << 19) @ DEEPIDLE_WAKEUP
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beq didle_wakeup
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cmp r7, r8
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skip_check_didle:
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addeq r0, r8, #0x280 @ S5PC100_GPIO_J4
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addne r0, r8, #0x2C0 @ S5PC110_GPIO_J4
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ldr r1, [r0, #0x0] @ GPIO_CON_OFFSET
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bic r1, r1, #(0xf << 4) @ 1 * 4-bit
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orr r1, r1, #(0x1 << 4)
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str r1, [r0, #0x0] @ GPIO_CON_OFFSET
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ldr r1, [r0, #0x4] @ GPIO_DAT_OFFSET
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bic r1, r1, #(1 << 1)
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str r1, [r0, #0x4] @ GPIO_DAT_OFFSET
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/* Don't setup at s5pc100 */
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beq 100f
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/*
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* Initialize Async Register Setting for EVT1
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* Because we are setting EVT1 as the default value of EVT0,
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* setting EVT0 as well does not make things worse.
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* Thus, for the simplicity, we set for EVT0, too
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*
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* The "Async Registers" are:
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* 0xE0F0_0000
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* 0xE1F0_0000
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* 0xF180_0000
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* 0xF190_0000
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* 0xF1A0_0000
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* 0xF1B0_0000
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* 0xF1C0_0000
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* 0xF1D0_0000
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* 0xF1E0_0000
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* 0xF1F0_0000
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* 0xFAF0_0000
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*/
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ldr r0, =0xe0f00000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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ldr r0, =0xe1f00000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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ldr r0, =0xf1800000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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ldr r0, =0xf1900000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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ldr r0, =0xf1a00000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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ldr r0, =0xf1b00000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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ldr r0, =0xf1c00000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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ldr r0, =0xf1d00000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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ldr r0, =0xf1e00000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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ldr r0, =0xf1f00000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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ldr r0, =0xfaf00000
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ldr r1, [r0]
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bic r1, r1, #0x1
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str r1, [r0]
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/*
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* Diable ABB block to reduce sleep current at low temperature
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* Note that it's hidden register setup don't modify it
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*/
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ldr r0, =0xE010C300
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ldr r1, =0x00800000
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str r1, [r0]
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100:
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/* IO retension release */
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ldreq r0, =S5PC100_OTHERS @ 0xE0108200
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ldrne r0, =S5PC110_OTHERS @ 0xE010E000
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ldr r1, [r0]
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ldreq r2, =(1 << 31) @ IO_RET_REL
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ldrne r2, =((1 << 31) | (1 << 30) | (1 << 29) | (1 << 28))
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orr r1, r1, r2
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/* Do not release retention here for S5PC110 */
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streq r1, [r0]
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/* Disable Watchdog */
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ldreq r0, =S5PC100_WATCHDOG_BASE @ 0xEA200000
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ldrne r0, =S5PC110_WATCHDOG_BASE @ 0xE2700000
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str r5, [r0]
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/* setting SRAM */
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ldreq r0, =S5PC100_SROMC_BASE
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ldrne r0, =S5PC110_SROMC_BASE
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ldr r1, =0x9
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str r1, [r0]
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/* S5PC100 has 3 groups of interrupt sources */
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ldreq r0, =S5PC100_VIC0_BASE @ 0xE4000000
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ldrne r0, =S5PC110_VIC0_BASE @ 0xF2000000
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add r1, r0, #0x00100000
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add r2, r0, #0x00200000
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/* Disable all interrupts (VIC0, VIC1 and VIC2) */
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mvn r3, #0x0
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str r3, [r0, #0x14] @ INTENCLEAR
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str r3, [r1, #0x14] @ INTENCLEAR
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str r3, [r2, #0x14] @ INTENCLEAR
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/* Set all interrupts as IRQ */
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str r5, [r0, #0xc] @ INTSELECT
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str r5, [r1, #0xc] @ INTSELECT
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str r5, [r2, #0xc] @ INTSELECT
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/* Pending Interrupt Clear */
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str r5, [r0, #0xf00] @ INTADDRESS
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str r5, [r1, #0xf00] @ INTADDRESS
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str r5, [r2, #0xf00] @ INTADDRESS
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/* for UART */
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bl uart_asm_init
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bl internal_ram_init
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cmp r7, r8
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/* Clear wakeup status register */
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ldreq r0, =S5PC100_WAKEUP_STAT
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ldrne r0, =S5PC110_WAKEUP_STAT
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ldr r1, [r0]
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str r1, [r0]
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/* IO retension release */
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ldreq r0, =S5PC100_OTHERS @ 0xE0108200
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ldrne r0, =S5PC110_OTHERS @ 0xE010E000
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ldr r1, [r0]
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ldreq r2, =(1 << 31) @ IO_RET_REL
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ldrne r2, =((1 << 31) | (1 << 30) | (1 << 29) | (1 << 28))
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orr r1, r1, r2
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str r1, [r0]
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b 1f
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didle_wakeup:
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/* Wait when APLL is locked */
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ldr r0, =0xE0100100 @ S5PC110_APLL_CON
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lockloop:
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ldr r1, [r0]
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and r1, r1, #(1 << 29)
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cmp r1, #(1 << 29)
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bne lockloop
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ldr r0, =S5PC110_INFORM0
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ldr r1, [r0]
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mov pc, r1
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nop
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nop
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nop
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nop
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nop
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1:
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mov lr, r11
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mov pc, lr
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/*
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* system_clock_init: Initialize core clock and bus clock.
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* void system_clock_init(void)
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*/
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system_clock_init:
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ldr r0, =S5PC110_CLOCK_BASE @ 0xE0100000
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/* Check S5PC100 */
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cmp r7, r8
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bne 110f
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100:
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/* Set Lock Time */
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ldr r1, =0xe10 @ Locktime : 0xe10 = 3600
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str r1, [r0, #0x000] @ S5PC100_APLL_LOCK
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str r1, [r0, #0x004] @ S5PC100_MPLL_LOCK
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str r1, [r0, #0x008] @ S5PC100_EPLL_LOCK
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str r1, [r0, #0x00C] @ S5PC100_HPLL_LOCK
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/* S5P_APLL_CON */
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ldr r1, =0x81bc0400 @ SDIV 0, PDIV 4, MDIV 444 (1333MHz)
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str r1, [r0, #0x100]
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/* S5P_MPLL_CON */
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ldr r1, =0x80590201 @ SDIV 1, PDIV 2, MDIV 89 (267MHz)
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str r1, [r0, #0x104]
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/* S5P_EPLL_CON */
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ldr r1, =0x80870303 @ SDIV 3, PDIV 3, MDIV 135 (67.5MHz)
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str r1, [r0, #0x108]
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/* S5P_HPLL_CON */
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ldr r1, =0x80600603 @ SDIV 3, PDIV 6, MDIV 96
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str r1, [r0, #0x10C]
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ldr r1, [r0, #0x300]
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ldr r2, =0x00003fff
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bic r1, r1, r2
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ldr r2, =0x00011301
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orr r1, r1, r2
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str r1, [r0, #0x300]
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ldr r1, [r0, #0x304]
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ldr r2, =0x00011110
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orr r1, r1, r2
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str r1, [r0, #0x304]
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ldr r1, =0x00000001
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str r1, [r0, #0x308]
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/* Set Source Clock */
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ldr r1, =0x00001111 @ A, M, E, HPLL Muxing
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str r1, [r0, #0x200] @ S5PC1XX_CLK_SRC0
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b 200f
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110:
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ldr r0, =0xE010C000 @ S5PC110_PWR_CFG
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/* Set OSC_FREQ value */
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ldr r1, =0xf
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str r1, [r0, #0x100] @ S5PC110_OSC_FREQ
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/* Set MTC_STABLE value */
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ldr r1, =0xffffffff
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str r1, [r0, #0x110] @ S5PC110_MTC_STABLE
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/* Set CLAMP_STABLE value */
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ldr r1, =0x3ff03ff
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str r1, [r0, #0x114] @ S5PC110_CLAMP_STABLE
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ldr r0, =S5PC110_CLOCK_BASE @ 0xE0100000
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/* Set Clock divider */
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ldr r1, =0x14131330 @ 1:1:4:4, 1:4:5
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str r1, [r0, #0x300]
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ldr r1, =0x11110111 @ UART[3210]: MMC[3210]
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str r1, [r0, #0x310]
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/* Set Lock Time */
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ldr r1, =0x2cf @ Locktime : 30us
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str r1, [r0, #0x000] @ S5PC110_APLL_LOCK
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ldr r1, =0xe10 @ Locktime : 0xe10 = 3600
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str r1, [r0, #0x008] @ S5PC110_MPLL_LOCK
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str r1, [r0, #0x010] @ S5PC110_EPLL_LOCK
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str r1, [r0, #0x020] @ S5PC110_VPLL_LOCK
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/* S5PC110_APLL_CON */
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ldr r1, =0x80C80601 @ 800MHz
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str r1, [r0, #0x100]
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/* S5PC110_MPLL_CON */
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ldr r1, =0x829B0C01 @ 667MHz
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str r1, [r0, #0x108]
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/* S5PC110_EPLL_CON */
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ldr r1, =0x80600602 @ 96MHz VSEL 0 P 6 M 96 S 2
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str r1, [r0, #0x110]
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/* S5PC110_VPLL_CON */
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ldr r1, =0x806C0603 @ 54MHz
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str r1, [r0, #0x120]
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/* Set Source Clock */
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ldr r1, =0x10001111 @ A, M, E, VPLL Muxing
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str r1, [r0, #0x200] @ S5PC1XX_CLK_SRC0
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/* OneDRAM(DMC0) clock setting */
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ldr r1, =0x01000000 @ ONEDRAM_SEL[25:24] 1 SCLKMPLL
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str r1, [r0, #0x218] @ S5PC110_CLK_SRC6
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ldr r1, =0x30000000 @ ONEDRAM_RATIO[31:28] 3 + 1
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str r1, [r0, #0x318] @ S5PC110_CLK_DIV6
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/* XCLKOUT = XUSBXTI 24MHz */
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add r2, r0, #0xE000 @ S5PC110_OTHERS
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ldr r1, [r2]
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orr r1, r1, #(0x3 << 8) @ CLKOUT[9:8] 3 XUSBXTI
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str r1, [r2]
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/* CLK_IP0 */
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ldr r1, =0x8fefeeb @ DMC[1:0] PDMA0[3] IMEM[5]
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str r1, [r0, #0x460] @ S5PC110_CLK_IP0
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/* CLK_IP1 */
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ldr r1, =0xe9fdf0f9 @ FIMD[0] USBOTG[16]
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@ NANDXL[24]
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str r1, [r0, #0x464] @ S5PC110_CLK_IP1
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/* CLK_IP2 */
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ldr r1, =0xf75f7fc @ CORESIGHT[8] MODEM[9]
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@ HOSTIF[10] HSMMC0[16]
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@ HSMMC2[18] VIC[27:24]
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str r1, [r0, #0x468] @ S5PC110_CLK_IP2
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/* CLK_IP3 */
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ldr r1, =0x8eff038c @ I2C[8:6]
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@ SYSTIMER[16] UART0[17]
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@ UART1[18] UART2[19]
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@ UART3[20] WDT[22]
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@ PWM[23] GPIO[26] SYSCON[27]
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str r1, [r0, #0x46c] @ S5PC110_CLK_IP3
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/* CLK_IP4 */
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ldr r1, =0xfffffff1 @ CHIP_ID[0] TZPC[8:5]
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str r1, [r0, #0x470] @ S5PC110_CLK_IP3
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200:
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/* wait at least 200us to stablize all clock */
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mov r2, #0x10000
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1: subs r2, r2, #1
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bne 1b
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mov pc, lr
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internal_ram_init:
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ldreq r0, =0xE3800000
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ldrne r0, =0xF1500000
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ldr r1, =0x0
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str r1, [r0]
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mov pc, lr
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/*
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* uart_asm_init: Initialize UART's pins
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*/
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uart_asm_init:
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/* set GPIO to enable UART0-UART4 */
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mov r0, r8
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ldr r1, =0x22222222
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str r1, [r0, #0x0] @ S5PC100_GPIO_A0_OFFSET
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ldr r1, =0x00002222
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str r1, [r0, #0x20] @ S5PC100_GPIO_A1_OFFSET
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/* Check S5PC100 */
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cmp r7, r8
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bne 110f
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/* UART_SEL GPK0[5] at S5PC100 */
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add r0, r8, #0x2A0 @ S5PC100_GPIO_K0_OFFSET
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ldr r1, [r0, #0x0] @ S5PC1XX_GPIO_CON_OFFSET
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bic r1, r1, #(0xf << 20) @ 20 = 5 * 4-bit
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orr r1, r1, #(0x1 << 20) @ Output
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str r1, [r0, #0x0] @ S5PC1XX_GPIO_CON_OFFSET
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ldr r1, [r0, #0x8] @ S5PC1XX_GPIO_PULL_OFFSET
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bic r1, r1, #(0x3 << 10) @ 10 = 5 * 2-bit
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orr r1, r1, #(0x2 << 10) @ Pull-up enabled
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str r1, [r0, #0x8] @ S5PC1XX_GPIO_PULL_OFFSET
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ldr r1, [r0, #0x4] @ S5PC1XX_GPIO_DAT_OFFSET
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orr r1, r1, #(1 << 5) @ 5 = 5 * 1-bit
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str r1, [r0, #0x4] @ S5PC1XX_GPIO_DAT_OFFSET
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b 200f
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110:
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/*
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* Note that the following address
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* 0xE020'0360 is reserved address at S5PC100
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*/
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/* UART_SEL MP0_5[7] at S5PC110 */
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add r0, r8, #0x360 @ S5PC110_GPIO_MP0_5_OFFSET
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ldr r1, [r0, #0x0] @ S5PC1XX_GPIO_CON_OFFSET
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bic r1, r1, #(0xf << 28) @ 28 = 7 * 4-bit
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orr r1, r1, #(0x1 << 28) @ Output
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str r1, [r0, #0x0] @ S5PC1XX_GPIO_CON_OFFSET
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ldr r1, [r0, #0x8] @ S5PC1XX_GPIO_PULL_OFFSET
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bic r1, r1, #(0x3 << 14) @ 14 = 7 * 2-bit
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orr r1, r1, #(0x2 << 14) @ Pull-up enabled
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str r1, [r0, #0x8] @ S5PC1XX_GPIO_PULL_OFFSET
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ldr r1, [r0, #0x4] @ S5PC1XX_GPIO_DAT_OFFSET
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orr r1, r1, #(1 << 7) @ 7 = 7 * 1-bit
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str r1, [r0, #0x4] @ S5PC1XX_GPIO_DAT_OFFSET
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200:
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mov pc, lr
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