| Paul Burton | f5de32a | 2016-09-08 07:47:39 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 Imagination Technologies |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0 |
| 5 | */ |
| 6 | |
| 7 | #include <config.h> |
| 8 | |
| 9 | #include <asm/addrspace.h> |
| 10 | #include <asm/asm.h> |
| 11 | #include <asm/mipsregs.h> |
| 12 | #include <asm/regdef.h> |
| 13 | |
| 14 | #include "boston-regs.h" |
| 15 | |
| 16 | .data |
| 17 | |
| 18 | msg_ddr_cal: .ascii "DDR Cal " |
| 19 | msg_ddr_ok: .ascii "DDR OK " |
| 20 | |
| 21 | .text |
| 22 | |
| 23 | LEAF(lowlevel_init) |
| 24 | move s0, ra |
| 25 | |
| 26 | PTR_LA a0, msg_ddr_cal |
| 27 | bal lowlevel_display |
| 28 | |
| 29 | PTR_LI t0, BOSTON_PLAT_DDR3STAT |
| 30 | 1: lw t1, 0(t0) |
| 31 | andi t1, t1, BOSTON_PLAT_DDR3STAT_CALIB |
| 32 | beqz t1, 1b |
| 33 | |
| 34 | PTR_LA a0, msg_ddr_ok |
| 35 | bal lowlevel_display |
| 36 | |
| 37 | move v0, zero |
| 38 | jr s0 |
| 39 | END(lowlevel_init) |
| 40 | |
| 41 | LEAF(lowlevel_display) |
| 42 | .set push |
| 43 | .set noat |
| 44 | PTR_LI AT, BOSTON_LCD_BASE |
| 45 | #ifdef CONFIG_64BIT |
| 46 | ld k1, 0(a0) |
| 47 | sd k1, 0(AT) |
| 48 | #else |
| 49 | lw k1, 0(a0) |
| 50 | sw k1, 0(AT) |
| 51 | lw k1, 4(a0) |
| 52 | sw k1, 4(AT) |
| 53 | #endif |
| 54 | .set pop |
| 55 | 1: jr ra |
| 56 | END(lowlevel_display) |