mirror of
https://github.com/AsahiLinux/u-boot
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147 lines
3.3 KiB
ArmAsm
147 lines
3.3 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2011 Andes Technology Corporation
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* Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
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* Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
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*/
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.pic
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.text
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#include <common.h>
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#include <config.h>
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#include <asm/macro.h>
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#include <generated/asm-offsets.h>
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/*
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* parameters for the SDRAM controller
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*/
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#define SDMC_TP1_A (CONFIG_FTSDMC021_BASE + FTSDMC021_TP1)
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#define SDMC_TP2_A (CONFIG_FTSDMC021_BASE + FTSDMC021_TP2)
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#define SDMC_CR1_A (CONFIG_FTSDMC021_BASE + FTSDMC021_CR1)
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#define SDMC_CR2_A (CONFIG_FTSDMC021_BASE + FTSDMC021_CR2)
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#define SDMC_B0_BSR_A (CONFIG_FTSDMC021_BASE + FTSDMC021_BANK0_BSR)
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#define SDMC_B1_BSR_A (CONFIG_FTSDMC021_BASE + FTSDMC021_BANK1_BSR)
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#define SDMC_TP1_D CONFIG_SYS_FTSDMC021_TP1
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#define SDMC_TP2_D CONFIG_SYS_FTSDMC021_TP2
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#define SDMC_CR1_D CONFIG_SYS_FTSDMC021_CR1
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#define SDMC_CR2_D CONFIG_SYS_FTSDMC021_CR2
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#define SDMC_B0_BSR_D CONFIG_SYS_FTSDMC021_BANK0_BSR
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#define SDMC_B1_BSR_D CONFIG_SYS_FTSDMC021_BANK1_BSR
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/*
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* for Orca and Emerald
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*/
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#define BOARD_ID_REG 0x104
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#define BOARD_ID_FAMILY_MASK 0xfff000
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#define BOARD_ID_FAMILY_V5 0x556000
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#define BOARD_ID_FAMILY_K7 0x74b000
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/*
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* parameters for the static memory controller
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*/
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#define SMC_BANK0_CR_A (CONFIG_FTSMC020_BASE + FTSMC020_BANK0_CR)
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#define SMC_BANK0_TPR_A (CONFIG_FTSMC020_BASE + FTSMC020_BANK0_TPR)
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#define SMC_BANK0_CR_D FTSMC020_BANK0_LOWLV_CONFIG
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#define SMC_BANK0_TPR_D FTSMC020_BANK0_LOWLV_TIMING
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/*
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* for Orca and Emerald
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*/
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#define AHBC_BSR4_A (CONFIG_FTAHBC020S_BASE + FTAHBC020S_SLAVE_BSR_4)
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#define AHBC_BSR6_D CONFIG_SYS_FTAHBC020S_SLAVE_BSR_6
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/*
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* parameters for the pmu controoler
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*/
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#define PMU_PDLLCR0_A (CONFIG_FTPMU010_BASE + FTPMU010_PDLLCR0)
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/*
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* numeric 7 segment display
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*/
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.macro led, num
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write32 CONFIG_DEBUG_LED, \num
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.endm
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/*
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* Waiting for SDRAM to set up
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*/
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.macro wait_sdram
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li $r0, CONFIG_FTSDMC021_BASE
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1:
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lwi $r1, [$r0+FTSDMC021_CR2]
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bnez $r1, 1b
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.endm
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.globl mem_init
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mem_init:
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move $r11, $lp
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li $r0, SMC_BANK0_CR_A
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lwi $r1, [$r0+#0x00]
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ori $r1, $r1, 0x8f0
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xori $r1, $r1, 0x8f0
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/* 16-bit mode */
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ori $r1, $r1, 0x60
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li $r2, 0x00153153
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swi $r1, [$r0+#0x00]
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swi $r2, [$r0+#0x04]
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move $lp, $r11
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ret
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#if !CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT)
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.globl lowlevel_init
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lowlevel_init:
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move $r10, $lp
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jal remap
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#if (defined(NDS32_EXT_FPU_DP) || defined(NDS32_EXT_FPU_SP))
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jal enable_fpu
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#endif
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ret $r10
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remap:
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move $r11, $lp
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relo_base:
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mfusr $r0, $pc
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#ifdef CONFIG_MEM_REMAP
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li $r4, 0x00000000
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li $r5, 0x80000000
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la $r6, _end@GOTOFF
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1:
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lmw.bim $r12, [$r5], $r19
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smw.bim $r12, [$r4], $r19
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blt $r5, $r6, 1b
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#endif /* #ifdef CONFIG_MEM_REMAP */
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move $lp, $r11
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2:
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ret
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/*
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* enable_fpu:
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* Some of Andes CPU version support FPU coprocessor, if so,
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* and toolchain support FPU instruction set, we should enable it.
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*/
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#if (defined(NDS32_EXT_FPU_DP) || defined(NDS32_EXT_FPU_SP))
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enable_fpu:
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mfsr $r0, $CPU_VER /* enable FPU if it exists */
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srli $r0, $r0, 3
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andi $r0, $r0, 1
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beqz $r0, 1f /* skip if no COP */
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mfsr $r0, $FUCOP_EXIST
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srli $r0, $r0, 31
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beqz $r0, 1f /* skip if no FPU */
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mfsr $r0, $FUCOP_CTL
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ori $r0, $r0, 1
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mtsr $r0, $FUCOP_CTL
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1:
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ret
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#endif
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#endif /* #if !CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT) */
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