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
69
70
71
72
73
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2013 Antony Pavlov <antonynpavlov@gmail.com>
* Copyright (C) 2013 Oleksij Rempel <linux@rempel-privat.de>
*/
#define BOARD_PBL_START start_netgear_wg102
#include <asm/pbl_macros.h>
#include <mach/pbl_macros.h>
#include <mach/ar2312_regs.h>
#include <mach/debug_ll.h>
ENTRY_FUNCTION(BOARD_PBL_START)
mips_barebox_10h
mips_disable_interrupts
pbl_ar2312_pll
pbl_ar2312_rst_uart0
debug_ll_ns16550_init
debug_ll_outc 'a'
debug_ll_ns16550_outnl
/* check if SDRAM is already configured,
* if yes, we are probably starting
* as second stage loader and can skip configuration */
la t0, KSEG1 | AR2312_MEM_CFG1
lw t1, 0(t0)
and t0, t1, MEM_CFG1_E0
beq zero, t0, 1f
nop
pbl_probe_mem t0, t1, KSEG1
beq t0, t1, sdram_configured
nop
1:
/* start SDRAM configuration */
pbl_ar2312_x16_sdram
/* check one more time. if some thing wrong,
* we don't need to continue */
pbl_probe_mem t0, t1, KSEG1
beq t0, t1, sdram_configured
nop
debug_ll_outc '#'
debug_ll_ns16550_outnl
1:
b 1b /* dead end */
nop
sdram_configured:
debug_ll_outc 'b'
debug_ll_ns16550_outnl
copy_to_link_location BOARD_PBL_START;
stack_setup;
lw a0, 0;
la v0, pbl_main_entry;
jal v0;
nop;
/* No return */
__error:
b __error;
nop;
|
