diff options
Diffstat (limited to 'board/karo/tx25/lowlevel_init.S')
| -rw-r--r-- | board/karo/tx25/lowlevel_init.S | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/board/karo/tx25/lowlevel_init.S b/board/karo/tx25/lowlevel_init.S deleted file mode 100644 index 11b80b42a3..0000000000 --- a/board/karo/tx25/lowlevel_init.S +++ /dev/null @@ -1,98 +0,0 @@ -/* - * (C) Copyright 2009 DENX Software Engineering - * Author: John Rigby <jrigby@gmail.com> - * - * Based on U-Boot and RedBoot sources for several different i.mx - * platforms. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <asm/macro.h> -#include <asm/arch/macro.h> - -.macro init_clocks - /* - * clocks - * - * first enable CLKO debug output - * 0x40000000 enables the debug CLKO signal - * 0x05000000 sets CLKO divider to 6 - * 0x00600000 makes CLKO parent clk the USB clk - */ - write32 0x53f80064, 0x45600000 - - /* CCTL: ARM = 399 MHz, AHB = 133 MHz */ - write32 0x53f80008, 0x20034000 - - /* - * PCDR2: NFC = 33.25 MHz - * This is required for the NAND Flash of this board, which is a Samsung - * K9F1G08U0B with 25-ns R/W cycle times, in order to make it work with - * the NFC driver in symmetric (i.e. one-cycle) mode. - */ - write32 0x53f80020, 0x01010103 - - /* - * enable all implemented clocks in all three - * clock control registers - */ - write32 0x53f8000c, 0x1fffffff - write32 0x53f80010, 0xffffffff - write32 0x53f80014, 0xfdfff -.endm - -.macro init_ddrtype - /* - * ddr_type is 3.3v SDRAM - */ - write32 0x43fac454, 0x800 -.endm - -/* - * sdram controller init - */ -.macro init_sdram_bank bankaddr, ctl, cfg - ldr r0, =0xb8001000 - ldr r2, =\bankaddr - /* - * reset SDRAM controller - * then wait for initialization to complete - */ - ldr r1, =(1 << 1) - str r1, [r0, #0x10] -1: ldr r3, [r0, #0x10] - tst r3, #(1 << 31) - beq 1b - - ldr r1, =0x95728 - str r1, [r0, #\cfg] /* config */ - - ldr r1, =0x92116480 /* control | precharge */ - str r1, [r0, #\ctl] /* write command to controller */ - str r1, [r2, #0x400] /* command encoded in address */ - - ldr r1, =0xa2116480 /* auto refresh */ - str r1, [r0, #\ctl] - ldrb r3, [r2] /* read dram twice to auto refresh */ - ldrb r3, [r2] - - ldr r1, =0xb2116480 /* control | load mode */ - str r1, [r0, #\ctl] /* write command to controller */ - strb r1, [r2, #0x33] /* command encoded in address */ - - ldr r1, =0x82116480 /* control | normal (0)*/ - str r1, [r0, #\ctl] /* write command to controller */ -.endm - -.globl lowlevel_init -lowlevel_init: - init_aips - init_max - init_m3if - init_clocks - - init_sdram_bank 0x80000000, 0x0, 0x4 - - init_sdram_bank 0x90000000, 0x8, 0xc - mov pc, lr |