1*ad8783cbSPaul Burton/* 2*ad8783cbSPaul Burton * Copyright (C) 2016 Imagination Technologies 3*ad8783cbSPaul Burton * 4*ad8783cbSPaul Burton * SPDX-License-Identifier: GPL-2.0 5*ad8783cbSPaul Burton */ 6*ad8783cbSPaul Burton 7*ad8783cbSPaul Burton#include <config.h> 8*ad8783cbSPaul Burton 9*ad8783cbSPaul Burton#include <asm/addrspace.h> 10*ad8783cbSPaul Burton#include <asm/asm.h> 11*ad8783cbSPaul Burton#include <asm/mipsregs.h> 12*ad8783cbSPaul Burton#include <asm/regdef.h> 13*ad8783cbSPaul Burton 14*ad8783cbSPaul Burton#include "boston-regs.h" 15*ad8783cbSPaul Burton 16*ad8783cbSPaul Burton.data 17*ad8783cbSPaul Burton 18*ad8783cbSPaul Burtonmsg_ddr_cal: .ascii "DDR Cal " 19*ad8783cbSPaul Burtonmsg_ddr_ok: .ascii "DDR OK " 20*ad8783cbSPaul Burton 21*ad8783cbSPaul Burton.text 22*ad8783cbSPaul Burton 23*ad8783cbSPaul BurtonLEAF(lowlevel_init) 24*ad8783cbSPaul Burton move s0, ra 25*ad8783cbSPaul Burton 26*ad8783cbSPaul Burton PTR_LA a0, msg_ddr_cal 27*ad8783cbSPaul Burton bal lowlevel_display 28*ad8783cbSPaul Burton 29*ad8783cbSPaul Burton PTR_LI t0, BOSTON_PLAT_DDR3STAT 30*ad8783cbSPaul Burton1: lw t1, 0(t0) 31*ad8783cbSPaul Burton andi t1, t1, BOSTON_PLAT_DDR3STAT_CALIB 32*ad8783cbSPaul Burton beqz t1, 1b 33*ad8783cbSPaul Burton 34*ad8783cbSPaul Burton PTR_LA a0, msg_ddr_ok 35*ad8783cbSPaul Burton bal lowlevel_display 36*ad8783cbSPaul Burton 37*ad8783cbSPaul Burton move v0, zero 38*ad8783cbSPaul Burton jr s0 39*ad8783cbSPaul Burton END(lowlevel_init) 40*ad8783cbSPaul Burton 41*ad8783cbSPaul BurtonLEAF(lowlevel_display) 42*ad8783cbSPaul Burton .set push 43*ad8783cbSPaul Burton .set noat 44*ad8783cbSPaul Burton PTR_LI AT, BOSTON_LCD_BASE 45*ad8783cbSPaul Burton#ifdef CONFIG_64BIT 46*ad8783cbSPaul Burton ld k1, 0(a0) 47*ad8783cbSPaul Burton sd k1, 0(AT) 48*ad8783cbSPaul Burton#else 49*ad8783cbSPaul Burton lw k1, 0(a0) 50*ad8783cbSPaul Burton sw k1, 0(AT) 51*ad8783cbSPaul Burton lw k1, 4(a0) 52*ad8783cbSPaul Burton sw k1, 4(AT) 53*ad8783cbSPaul Burton#endif 54*ad8783cbSPaul Burton .set pop 55*ad8783cbSPaul Burton1: jr ra 56*ad8783cbSPaul Burton END(lowlevel_display) 57