4 * Copyright (C) 2006, 2007 OpenWrt.org
6 * Carsten Langgaard, carstenl@mips.com
7 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
9 * This program is free software; you can distribute it and/or modify it
10 * under the terms of the GNU General Public License (Version 2) as
11 * published by the Free Software Foundation.
13 * This program is distributed in the hope it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
22 * Putting things on the screen/serial line using YAMONs facilities.
24 #include <linux/init.h>
25 #include <linux/kernel.h>
26 #include <linux/serial_reg.h>
27 #include <linux/spinlock.h>
28 #include <linux/module.h>
29 #include <linux/string.h>
31 #include <asm/bootinfo.h>
32 #include <asm/mips-boards/prom.h>
33 #include <asm/gdb-stub.h>
35 #include <asm/ar7/ar7.h>
49 /* I hate this. No. *I* *HATE* *THIS* */
50 static __initdata struct psp_chip_map psp_chip_map[] = {
52 .chip = AR7_CHIP_7100,
54 "dummy", "cpufrequency", "memsize",
55 "flashsize", "modetty0", "modetty1", "prompt",
56 "bootcfg", "maca", "macb", "usb_rndis_mac",
57 "macap", "my_ipaddress", "server_ipaddress",
58 "bline_maca", "bline_macb", "bline_rndis",
59 "bline_atm", "usb_pid", "usb_vid",
60 "usb_eppolli", "gateway_ipaddress",
61 "subnet_mask", "usb_serial", "usb_board_mac",
62 "remote_user", "remote_pass", "remote_dir",
63 "sysfrequency", "link_timeout", "mac_port",
64 "path", "hostname", "tftpcfg", "buildops",
65 "tftp_fo_fname", "tftp_fo_ports",
66 "console_state", "mipsfrequency",
70 .chip = AR7_CHIP_7200,
72 "dummy", "cpufrequency", "memsize",
73 "flashsize", "modetty0", "modetty1", "prompt",
74 "bootcfg", "maca", "macb", "usb_rndis_mac",
75 "macap", "my_ipaddress", "server_ipaddress",
76 "bline_maca", "bline_macb", "bline_rndis",
77 "bline_atm", "usb_pid", "usb_vid",
78 "usb_eppolli", "gateway_ipaddress",
79 "subnet_mask", "usb_serial", "usb_board_mac",
80 "remote_user", "remote_pass", "remote_dir",
81 "sysfrequency", "link_timeout", "mac_port",
82 "path", "hostname", "tftpcfg", "buildops",
83 "tftp_fo_fname", "tftp_fo_ports",
84 "console_state", "mipsfrequency",
88 .chip = AR7_CHIP_7300,
90 "dummy", "cpufrequency", "memsize",
91 "flashsize", "modetty0", "modetty1", "prompt",
92 "bootcfg", "maca", "macb", "usb_rndis_mac",
93 "macap", "my_ipaddress", "server_ipaddress",
94 "bline_maca", "bline_macb", "bline_rndis",
95 "bline_atm", "usb_pid", "usb_vid",
96 "usb_eppolli", "gateway_ipaddress",
97 "subnet_mask", "usb_serial", "usb_board_mac",
98 "remote_user", "remote_pass", "remote_dir",
99 "sysfrequency", "link_timeout", "mac_port",
100 "path", "hostname", "tftpcfg", "buildops",
101 "tftp_fo_fname", "tftp_fo_ports",
102 "console_state", "mipsfrequency",
110 static struct env_var adam2_env[MAX_ENTRY] = { { 0, }, };
112 char * prom_getenv(char *name)
115 for (i = 0; (i < MAX_ENTRY) && adam2_env[i].name; i++)
116 if (!strcmp(name, adam2_env[i].name))
117 return adam2_env[i].value;
122 char * __init prom_getcmdline(void)
124 return &(arcs_cmdline[0]);
127 static void __init ar7_init_cmdline(int argc, char *argv[])
132 actr = 1; /* Always ignore argv[0] */
134 cp = &(arcs_cmdline[0]);
136 strcpy(cp, argv[actr]);
137 cp += strlen(argv[actr]);
141 if (cp != &(arcs_cmdline[0])) {
142 /* get rid of trailing space */
156 static __initdata char psp_env_version[] = "TIENV0.8";
163 unsigned char data[11];
166 static char psp_env_data[2048] = { 0, };
168 static void __init add_adam2_var(char *name, char *value)
171 for (i = 0; i < MAX_ENTRY; i++) {
172 if (!adam2_env[i].name) {
173 adam2_env[i].name = name;
174 adam2_env[i].value = value;
176 } else if (!strcmp(adam2_env[i].name, name)) {
177 adam2_env[i].value = value;
183 static int __init parse_psp_env(void *start)
187 struct psp_chip_map *map;
188 char *src, *dest, *name, *value;
189 struct psp_env_var *vars = start;
191 chip = ar7_chip_id();
192 for (map = psp_chip_map; map->chip; map++)
193 if (map->chip == chip)
202 while (vars[i].num < 0xff) {
205 strcpy(dest, map->names[vars[i].num]);
210 src += strlen(src) + 1;
212 dest += strlen(dest) + 1;
215 dest += strlen(dest) + 1;
216 add_adam2_var(name, value);
222 static void __init ar7_init_env(struct env_var *env)
225 struct psbl_rec *psbl = (struct psbl_rec *)(KSEG1ADDR(0x14000300));
226 void *psp_env = (void *)KSEG1ADDR(psbl->env_base);
228 if(strcmp(psp_env, psp_env_version) == 0) {
229 parse_psp_env(psp_env);
231 for (i = 0; i < MAX_ENTRY; i++, env++)
233 add_adam2_var(env->name, env->value);
237 static void __init console_config(void)
239 #ifdef CONFIG_SERIAL_8250_CONSOLE
240 char console_string[40];
242 char parity = '\0', bits = '\0', flow = '\0';
245 if (strstr(prom_getcmdline(), "console="))
249 if (!strstr(prom_getcmdline(), "nokgdb"))
251 strcat(prom_getcmdline(), " console=kgdb");
257 if ((s = prom_getenv("modetty0"))) {
258 baud = simple_strtoul(s, &p, 10);
261 if (*s) parity = *s++;
265 if (*s == 'h') flow = 'r';
270 if (parity != 'n' && parity != 'o' && parity != 'e')
272 if (bits != '7' && bits != '8')
277 sprintf(console_string, " console=ttyS0,%d%c%c%c", baud,
279 strcat(prom_getcmdline(), console_string);
283 void __init prom_init(void)
285 ar7_init_cmdline(fw_arg0, (char **)fw_arg1);
286 ar7_init_env((struct env_var *)fw_arg2);
290 #define PORT(offset) (KSEG1ADDR(AR7_REGS_UART0 + (offset * 4)))
291 static inline unsigned int serial_in(int offset)
293 return readb((void *)PORT(offset));
296 static inline void serial_out(int offset, int value)
298 writeb(value, (void *)PORT(offset));
301 char prom_getchar(void)
303 while (!(serial_in(UART_LSR) & UART_LSR_DR));
304 return serial_in(UART_RX);
307 int prom_putchar(char c)
309 while ((serial_in(UART_LSR) & UART_LSR_TEMT) == 0);
310 serial_out(UART_TX, c);
314 // from adm5120/prom.c
315 void prom_printf(char *fmt, ...)
323 l = vsprintf(buf, fmt, args); /* hopefully i < sizeof(buf) */
328 for (p = buf; p < buf_end; p++) {
329 /* Crude cr/nl handling is better than none */
337 int putDebugChar(char c)
339 return prom_putchar(c);
342 char getDebugChar(void)
344 return prom_getchar();
348 EXPORT_SYMBOL(prom_getenv);