mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-10 21:26:19 +09:00
ad8783cb1c
This patch introduces support for building U-Boot to run on the MIPS Boston development board. This is a board built around an FPGA & an Intel EG20T Platform Controller Hub, used largely as part of the development of new CPUs and their software support. It is essentially the successor to the older MIPS Malta board. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
57 lines
822 B
ArmAsm
57 lines
822 B
ArmAsm
/*
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* Copyright (C) 2016 Imagination Technologies
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#include <config.h>
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#include <asm/addrspace.h>
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#include <asm/asm.h>
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#include <asm/mipsregs.h>
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#include <asm/regdef.h>
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#include "boston-regs.h"
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.data
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msg_ddr_cal: .ascii "DDR Cal "
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msg_ddr_ok: .ascii "DDR OK "
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.text
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LEAF(lowlevel_init)
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move s0, ra
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PTR_LA a0, msg_ddr_cal
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bal lowlevel_display
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PTR_LI t0, BOSTON_PLAT_DDR3STAT
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1: lw t1, 0(t0)
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andi t1, t1, BOSTON_PLAT_DDR3STAT_CALIB
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beqz t1, 1b
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PTR_LA a0, msg_ddr_ok
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bal lowlevel_display
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move v0, zero
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jr s0
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END(lowlevel_init)
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LEAF(lowlevel_display)
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.set push
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.set noat
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PTR_LI AT, BOSTON_LCD_BASE
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#ifdef CONFIG_64BIT
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ld k1, 0(a0)
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sd k1, 0(AT)
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#else
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lw k1, 0(a0)
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sw k1, 0(AT)
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lw k1, 4(a0)
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sw k1, 4(AT)
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#endif
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.set pop
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1: jr ra
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END(lowlevel_display)
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