1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2008 Stefan Roese <sr@denx.de>, DENX Software Engineering
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <common.h>
8*4882a593Smuzhiyun #include <asm/io.h>
9*4882a593Smuzhiyun #include "vct.h"
10*4882a593Smuzhiyun
ebi_read(u32 addr)11*4882a593Smuzhiyun static u32 ebi_read(u32 addr)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun addr &= ~0xFC000000;
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun reg_write(EBI_CPU_IO_ACCS(EBI_BASE), EXT_DEVICE_CHANNEL_2 | addr);
16*4882a593Smuzhiyun ebi_wait();
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun return reg_read(EBI_IO_ACCS_DATA(EBI_BASE));
19*4882a593Smuzhiyun }
20*4882a593Smuzhiyun
ebi_write_u16(u32 addr,u32 data,int fetchIO)21*4882a593Smuzhiyun static int ebi_write_u16(u32 addr, u32 data, int fetchIO)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun u32 val = (data << 16);
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun addr &= ~0xFC000000;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun ebi_wait();
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun reg_write(EBI_IO_ACCS_DATA(EBI_BASE), val);
30*4882a593Smuzhiyun reg_write(EBI_CPU_IO_ACCS(EBI_BASE),
31*4882a593Smuzhiyun EXT_DEVICE_CHANNEL_2 | EBI_CPU_WRITE | addr);
32*4882a593Smuzhiyun ebi_wait();
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun if (fetchIO) {
35*4882a593Smuzhiyun u32 counter = 0;
36*4882a593Smuzhiyun while (!(reg_read(EBI_SIG_LEVEL(EBI_BASE)) & EXT_CPU_IORDY_SL)) {
37*4882a593Smuzhiyun if (counter++ > 0xFFFFFF)
38*4882a593Smuzhiyun return 1;
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun return 0;
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun
ebi_read_u16(u32 addr)45*4882a593Smuzhiyun static u16 ebi_read_u16(u32 addr)
46*4882a593Smuzhiyun {
47*4882a593Smuzhiyun return ((ebi_read(addr) >> 16) & 0xFFFF);
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
ebi_read_u8(u32 addr)50*4882a593Smuzhiyun static u8 ebi_read_u8(u32 addr)
51*4882a593Smuzhiyun {
52*4882a593Smuzhiyun u32 val = ebi_read(addr) >> 16;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun if (addr & 0x1)
55*4882a593Smuzhiyun return val & 0xff;
56*4882a593Smuzhiyun else
57*4882a593Smuzhiyun return (val >> 8) & 0xff;
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun /*
61*4882a593Smuzhiyun * EBI initialization for NOR FLASH access
62*4882a593Smuzhiyun */
ebi_init_nor_flash(void)63*4882a593Smuzhiyun int ebi_init_nor_flash(void)
64*4882a593Smuzhiyun {
65*4882a593Smuzhiyun reg_write(EBI_DEV1_CONFIG1(EBI_BASE), 0x83000);
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun reg_write(EBI_DEV2_CONFIG1(EBI_BASE), 0x400002);
68*4882a593Smuzhiyun reg_write(EBI_DEV2_CONFIG2(EBI_BASE), 0x50);
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun reg_write(EBI_DEV2_TIM1_RD1(EBI_BASE), 0x409113);
71*4882a593Smuzhiyun reg_write(EBI_DEV2_TIM1_RD2(EBI_BASE), 0xFF01000);
72*4882a593Smuzhiyun reg_write(EBI_DEV2_TIM1_WR1(EBI_BASE), 0x04003113);
73*4882a593Smuzhiyun reg_write(EBI_DEV2_TIM1_WR2(EBI_BASE), 0x3FC12011);
74*4882a593Smuzhiyun reg_write(EBI_DEV2_TIM_EXT(EBI_BASE), 0xFFF00000);
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun return 0;
77*4882a593Smuzhiyun }
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun /*
80*4882a593Smuzhiyun * Accessor functions replacing the "weak" functions in
81*4882a593Smuzhiyun * drivers/mtd/cfi_flash.c
82*4882a593Smuzhiyun */
flash_write8(u8 value,void * addr)83*4882a593Smuzhiyun void flash_write8(u8 value, void *addr)
84*4882a593Smuzhiyun {
85*4882a593Smuzhiyun ebi_write_u16((u32)addr, value, 0);
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun
flash_write16(u16 value,void * addr)88*4882a593Smuzhiyun void flash_write16(u16 value, void *addr)
89*4882a593Smuzhiyun {
90*4882a593Smuzhiyun ebi_write_u16((u32)addr, value, 0);
91*4882a593Smuzhiyun }
92*4882a593Smuzhiyun
flash_read8(void * addr)93*4882a593Smuzhiyun u8 flash_read8(void *addr)
94*4882a593Smuzhiyun {
95*4882a593Smuzhiyun return ebi_read_u8((u32)addr);
96*4882a593Smuzhiyun }
97*4882a593Smuzhiyun
flash_read16(void * addr)98*4882a593Smuzhiyun u16 flash_read16(void *addr)
99*4882a593Smuzhiyun {
100*4882a593Smuzhiyun return ebi_read_u16((u32)addr);
101*4882a593Smuzhiyun }
102*4882a593Smuzhiyun
flash_read32(void * addr)103*4882a593Smuzhiyun u32 flash_read32(void *addr)
104*4882a593Smuzhiyun {
105*4882a593Smuzhiyun return ((u32)ebi_read_u16((u32)addr) << 16) |
106*4882a593Smuzhiyun ebi_read_u16((u32)addr + 2);
107*4882a593Smuzhiyun }
108*4882a593Smuzhiyun
board_flash_read_memcpy(void * dest,const void * src,size_t count)109*4882a593Smuzhiyun void *board_flash_read_memcpy(void *dest, const void *src, size_t count)
110*4882a593Smuzhiyun {
111*4882a593Smuzhiyun u16 *tmp = (u16 *)dest, *s = (u16 *)src;
112*4882a593Smuzhiyun int i;
113*4882a593Smuzhiyun
114*4882a593Smuzhiyun for (i = 0; i < count; i += 2)
115*4882a593Smuzhiyun *tmp++ = flash_read16(s++);
116*4882a593Smuzhiyun
117*4882a593Smuzhiyun return dest;
118*4882a593Smuzhiyun }
119