1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Copyright (C) 2016 Imagination Technologies 4 */ 5 6#include <config.h> 7 8#include <asm/addrspace.h> 9#include <asm/asm.h> 10#include <asm/mipsregs.h> 11#include <asm/regdef.h> 12 13#include "boston-regs.h" 14 15.data 16 17msg_ddr_cal: .ascii "DDR Cal " 18msg_ddr_ok: .ascii "DDR OK " 19 20.text 21 22LEAF(lowlevel_init) 23 move s0, ra 24 25 PTR_LA a0, msg_ddr_cal 26 bal lowlevel_display 27 28 PTR_LI t0, BOSTON_PLAT_DDR3STAT 291: lw t1, 0(t0) 30 andi t1, t1, BOSTON_PLAT_DDR3STAT_CALIB 31 beqz t1, 1b 32 33 PTR_LA a0, msg_ddr_ok 34 bal lowlevel_display 35 36 jr s0 37 END(lowlevel_init) 38 39LEAF(lowlevel_display) 40 .set push 41 .set noat 42 PTR_LI AT, BOSTON_LCD_BASE 43#ifdef CONFIG_64BIT 44 ld k1, 0(a0) 45 sd k1, 0(AT) 46#else 47 lw k1, 0(a0) 48 sw k1, 0(AT) 49 lw k1, 4(a0) 50 sw k1, 4(AT) 51#endif 52 .set pop 53 jr ra 54 END(lowlevel_display) 55