1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
* Copyright (C) 2014 Sascha Hauer, Pengutronix
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <debug_ll.h>
#include <common.h>
#include <sizes.h>
#include <mach/generic.h>
#include <asm/barebox-arm-head.h>
#include <asm/barebox-arm.h>
static inline void setup_uart(void)
{
void __iomem *ccmbase = (void *)MX6_CCM_BASE_ADDR;
void __iomem *uartbase = (void *)MX6_UART1_BASE_ADDR;
void __iomem *iomuxbase = (void *)MX6_IOMUXC_BASE_ADDR;
writel(0xffffffff, ccmbase + 0x68);
writel(0xffffffff, ccmbase + 0x6c);
writel(0xffffffff, ccmbase + 0x70);
writel(0xffffffff, ccmbase + 0x74);
writel(0xffffffff, ccmbase + 0x78);
writel(0xffffffff, ccmbase + 0x7c);
writel(0xffffffff, ccmbase + 0x80);
writel(0x0, iomuxbase + 0x24);
writel(0x1b0b1, iomuxbase + 0x036C);
writel(0x0, iomuxbase + 0x28);
writel(0x1b0b1, iomuxbase + 0x0370);
writel(0x00000000, uartbase + 0x80);
writel(0x00004027, uartbase + 0x84);
writel(0x00000784, uartbase + 0x88);
writel(0x00000a81, uartbase + 0x90);
writel(0x0000002b, uartbase + 0x9c);
writel(0x0001b0b0, uartbase + 0xb0);
writel(0x0000047f, uartbase + 0xa4);
writel(0x0000c34f, uartbase + 0xa8);
writel(0x00000001, uartbase + 0x80);
putc_ll('>');
}
extern char __dtb_imx6sx_sdb_start[];
ENTRY_FUNCTION(start_imx6sx_sabresdb, r0, r1, r2)
{
void *fdt;
imx6_cpu_lowlevel_init();
if (IS_ENABLED(CONFIG_DEBUG_LL))
setup_uart();
fdt = __dtb_imx6sx_sdb_start - get_runtime_offset();
barebox_arm_entry(0x80000000, SZ_1G, fdt);
}
|
