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Source at commit 26e6894325eab6f295ae51a468f5d866a27b2f8c created 13 years 11 months ago. By Lars-Peter Clausen, Add JZ4740 SoC core support | |
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1 | /* |
2 | * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> |
3 | * JZ4740 SoC prom code |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it |
6 | * under the terms of the GNU General Public License as published by the |
7 | * Free Software Foundation; either version 2 of the License, or (at your |
8 | * option) any later version. |
9 | * |
10 | * You should have received a copy of the GNU General Public License along |
11 | * with this program; if not, write to the Free Software Foundation, Inc., |
12 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
13 | * |
14 | */ |
15 | |
16 | |
17 | #include <linux/module.h> |
18 | #include <linux/kernel.h> |
19 | #include <linux/init.h> |
20 | #include <linux/string.h> |
21 | |
22 | #include <linux/serial_reg.h> |
23 | |
24 | #include <asm/bootinfo.h> |
25 | #include <asm/mach-jz4740/base.h> |
26 | |
27 | void jz4740_init_cmdline(int argc, char *argv[]) |
28 | { |
29 | unsigned int count = COMMAND_LINE_SIZE - 1; |
30 | int i; |
31 | char *dst = &(arcs_cmdline[0]); |
32 | char *src; |
33 | |
34 | for (i = 1; i < argc && count; ++i) { |
35 | src = argv[i]; |
36 | while (*src && count) { |
37 | *dst++ = *src++; |
38 | --count; |
39 | } |
40 | *dst++ = ' '; |
41 | } |
42 | if (i > 1) |
43 | --dst; |
44 | |
45 | *dst = 0; |
46 | } |
47 | |
48 | void __init prom_init(void) |
49 | { |
50 | jz4740_init_cmdline((int)fw_arg0, (char **)fw_arg1); |
51 | mips_machtype = MACH_INGENIC_JZ4740; |
52 | } |
53 | |
54 | void __init prom_free_prom_memory(void) |
55 | { |
56 | } |
57 | |
58 | #define UART_REG(offset) ((void __iomem*)(JZ4740_UART0_BASE_ADDR + (offset << 2))) |
59 | |
60 | void prom_putchar(char c) |
61 | { |
62 | uint8_t lsr; |
63 | |
64 | do { |
65 | lsr = readb(UART_REG(UART_LSR)); |
66 | } while ((lsr & UART_LSR_TEMT) == 0); |
67 | |
68 | writeb(c, UART_REG(UART_TX)); |
69 | } |
70 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
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jz-3.6-rc2-pwm
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jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9