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| Source at commit 694c7fbe86b8a9c91392e505afcb9fcfc91deccc created 12 years 6 months ago. By Maarten ter Huurne, MIPS: JZ4740: Add cpufreq support | |
|---|---|
| 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 | #include <linux/module.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/string.h> |
| 20 | |
| 21 | #include <linux/serial_reg.h> |
| 22 | |
| 23 | #include <asm/bootinfo.h> |
| 24 | #include <asm/mach-jz4740/base.h> |
| 25 | |
| 26 | static __init void jz4740_init_cmdline(int argc, char *argv[]) |
| 27 | { |
| 28 | unsigned int count = COMMAND_LINE_SIZE - 1; |
| 29 | int i; |
| 30 | char *dst = &(arcs_cmdline[0]); |
| 31 | char *src; |
| 32 | |
| 33 | for (i = 1; i < argc && count; ++i) { |
| 34 | src = argv[i]; |
| 35 | while (*src && count) { |
| 36 | *dst++ = *src++; |
| 37 | --count; |
| 38 | } |
| 39 | *dst++ = ' '; |
| 40 | } |
| 41 | if (i > 1) |
| 42 | --dst; |
| 43 | |
| 44 | *dst = 0; |
| 45 | } |
| 46 | |
| 47 | void __init prom_init(void) |
| 48 | { |
| 49 | jz4740_init_cmdline((int)fw_arg0, (char **)fw_arg1); |
| 50 | mips_machtype = MACH_INGENIC_JZ4740; |
| 51 | } |
| 52 | |
| 53 | void __init prom_free_prom_memory(void) |
| 54 | { |
| 55 | } |
| 56 | |
| 57 | #define UART_REG(_reg) ((void __iomem *)CKSEG1ADDR(JZ4740_UART0_BASE_ADDR + (_reg << 2))) |
| 58 | |
| 59 | void prom_putchar(char c) |
| 60 | { |
| 61 | uint8_t lsr; |
| 62 | |
| 63 | do { |
| 64 | lsr = readb(UART_REG(UART_LSR)); |
| 65 | } while ((lsr & UART_LSR_TEMT) == 0); |
| 66 | |
| 67 | writeb(c, UART_REG(UART_TX)); |
| 68 | } |
| 69 | |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
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
