2 * Copyright (c) 2009 Oleksandr Tymoshenko
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include "opt_ar71xx.h"
33 #include <sys/param.h>
35 #include <sys/kernel.h>
36 #include <sys/systm.h>
40 #include <sys/reboot.h>
43 #include <vm/vm_page.h>
45 #include <net/ethernet.h>
47 #include <machine/clock.h>
48 #include <machine/cpu.h>
49 #include <machine/cpuregs.h>
50 #include <machine/hwfunc.h>
51 #include <machine/md_var.h>
52 #include <machine/trap.h>
53 #include <machine/vmparam.h>
55 #include <mips/atheros/ar71xxreg.h>
57 #include <mips/atheros/ar71xx_setup.h>
58 #include <mips/atheros/ar71xx_cpudef.h>
59 #include <mips/atheros/ar71xx_macaddr.h>
61 extern char edata[], end[];
63 /* 4KB static data aread to keep a copy of the bootload env until
64 the dynamic kenv is setup */
68 * We get a string in from Redboot with the all the arguments together,
69 * "foo=bar bar=baz". Split them up and save in kenv.
76 while ((v = strsep(&str, " ")) != NULL) {
83 case 'a': boothowto |= RB_ASKNAME; break;
84 case 'd': boothowto |= RB_KDB; break;
85 case 'g': boothowto |= RB_GDB; break;
86 case 's': boothowto |= RB_SINGLE; break;
87 case 'v': boothowto |= RB_VERBOSE; break;
103 /* Nothing special */
109 ar71xx_device_stop(RST_RESET_FULL_CHIP);
116 * Obtain the MAC address via the Redboot environment.
119 ar71xx_redboot_get_macaddr(void)
123 uint32_t macaddr[ETHER_ADDR_LEN];
124 uint8_t tmpmac[ETHER_ADDR_LEN];
127 * "ethaddr" is passed via envp on RedBoot platforms
128 * "kmac" is passed via argv on RouterBOOT platforms
130 if ((var = kern_getenv("ethaddr")) != NULL ||
131 (var = kern_getenv("kmac")) != NULL) {
132 count = sscanf(var, "%x%*c%x%*c%x%*c%x%*c%x%*c%x",
133 &macaddr[0], &macaddr[1],
134 &macaddr[2], &macaddr[3],
135 &macaddr[4], &macaddr[5]);
141 for (i = 0; i < ETHER_ADDR_LEN; i++)
142 tmpmac[i] = macaddr[i] & 0xff;
143 (void) ar71xx_mac_addr_init(ar71xx_board_mac_addr,
154 #ifdef AR71XX_ENV_ROUTERBOOT
156 * RouterBoot gives us the board memory in a command line argument.
159 ar71xx_routerboot_get_mem(int argc, char **argv)
164 * Protect ourselves from garbage in registers.
166 if (!MIPS_IS_VALID_PTR(argv))
169 for (i = 0; i < argc; i++) {
172 if (strncmp(argv[i], "mem=", 4) == 0) {
173 if (sscanf(argv[i] + 4, "%dM", &board_mem) == 1)
174 return (btoc(board_mem * 1024 * 1024));
183 * Handle initialising the MAC address from a specific EEPROM
186 * This is done during (very) early boot.
188 * hint.ar71xx.0.eeprom_mac_addr=<address to read from>
189 * hint.ar71xx.0.eeprom_mac_isascii=<0|1>
192 ar71xx_platform_read_eeprom_mac(void)
194 long eeprom_mac_addr = 0;
196 int i, readascii = 0;
197 uint8_t macaddr[ETHER_ADDR_LEN];
199 if (resource_long_value("ar71xx", 0, "eeprom_mac_addr",
200 &eeprom_mac_addr) != 0)
203 /* get a pointer to the EEPROM MAC address */
205 mac = (const char *) MIPS_PHYS_TO_KSEG1(eeprom_mac_addr);
207 /* Check if it's ASCII or not */
208 if (resource_int_value("ar71xx", 0, "eeprom_mac_isascii",
209 &readascii) == 0 && readascii == 1) {
210 printf("ar71xx: Overriding MAC from EEPROM (ascii)\n");
211 for (i = 0; i < 6; i++) {
212 macaddr[i] = strtol(&(mac[i*3]), NULL, 16);
215 printf("ar71xx: Overriding MAC from EEPROM\n");
216 for (i = 0; i < 6; i++) {
221 /* Set the default board MAC */
222 (void) ar71xx_mac_addr_init(ar71xx_board_mac_addr,
226 printf("ar71xx: Board MAC: %6D\n", ar71xx_board_mac_addr, ":");
231 * Populate a kenv hint for the given device based on the given
232 * MAC address and offset.
234 * Returns 0 if ok, < 0 on error.
237 ar71xx_platform_set_mac_hint(const char *dev, int unit,
238 const uint8_t *macaddr, int offset, int islocal)
241 uint8_t lclmac[ETHER_ADDR_LEN];
244 /* Initialise the MAC address, plus/minus the offset */
245 if (ar71xx_mac_addr_init(lclmac, macaddr, offset, islocal) != 0) {
249 /* Turn it into a string */
250 snprintf(macstr, 32, "%6D", lclmac, ":");
251 snprintf(devstr, 32, "hint.%s.%d.macaddr", dev, unit);
253 printf(" %s => %s\n", devstr, macstr);
256 if (kern_setenv(devstr, macstr) != 0) {
257 printf("%s: failed to set hint (%s => %s)\n",
268 * Iterate through the list of boot time hints that populate
269 * a device MAC address hint based on the "board" MAC address.
271 * ar71xx_mac_map.X.devid=<device id, eg ath>
272 * ar71xx_mac_map.X.unitid=<unit id, eg 0>
273 * ar71xx_mac_map.X.offset=<mac address value offset>
274 * ar71xx_mac_map.X.is_local=<1 or 0>
277 ar71xx_platform_check_mac_hints(void)
281 int offset, is_local, unitid;
283 for (i = 0; i < 8; i++) {
284 if (resource_string_value("ar71xx_mac_map", i, "devid",
287 if (resource_int_value("ar71xx_mac_map", i, "unitid",
290 if (resource_int_value("ar71xx_mac_map", i, "offset",
293 if (resource_int_value("ar71xx_mac_map", i, "is_local",
296 printf("ar71xx: devid '%s.%d', MAC offset '%d'\n",
297 devid, unitid, offset);
298 (void) ar71xx_platform_set_mac_hint(devid, unitid,
299 ar71xx_board_mac_addr, offset, is_local);
305 extern char cpu_model[];
308 platform_start(__register_t a0 __unused, __register_t a1 __unused,
309 __register_t a2 __unused, __register_t a3 __unused)
311 uint64_t platform_counter_freq;
313 char **argv = NULL, **envp = NULL;
317 * clear the BSS and SBSS segments, this should be first call in
320 kernend = (vm_offset_t)&end;
321 memset(&edata, 0, kernend - (vm_offset_t)(&edata));
323 mips_postboot_fixup();
325 /* Initialize pcpu stuff */
329 * Until some more sensible abstractions for uboot/redboot
330 * environment handling, we have to make this a compile-time
331 * hack. The existing code handles the uboot environment
332 * very incorrectly so we should just ignore initialising
333 * the relevant pointers.
335 #ifndef AR71XX_ENV_UBOOT
341 * Protect ourselves from garbage in registers
343 if (MIPS_IS_VALID_PTR(envp)) {
344 for (i = 0; envp[i]; i += 2) {
345 if (strcmp(envp[i], "memsize") == 0)
346 realmem = btoc(strtoul(envp[i+1], NULL, 16));
347 else if (strcmp(envp[i], "bootverbose") == 0)
348 bootverbose = btoc(strtoul(envp[i+1], NULL, 10));
353 #ifdef AR71XX_ENV_ROUTERBOOT
355 * RouterBoot informs the board memory as a command line argument.
358 realmem = ar71xx_routerboot_get_mem(argc, argv);
362 * Just wild guess. RedBoot let us down and didn't reported
366 realmem = btoc(32*1024*1024);
369 * Allow build-time override in case Redboot lies
370 * or in other situations (eg where there's u-boot)
371 * where there isn't (yet) a convienent method of
372 * being told how much RAM is available.
374 * This happens on at least the Ubiquiti LS-SR71A
375 * board, where redboot says there's 16mb of RAM
376 * but in fact there's 32mb.
378 #if defined(AR71XX_REALMEM)
379 realmem = btoc(AR71XX_REALMEM);
382 /* phys_avail regions are in bytes */
383 phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
384 phys_avail[1] = ctob(realmem);
386 dump_avail[0] = phys_avail[0];
387 dump_avail[1] = phys_avail[1] - phys_avail[0];
392 * ns8250 uart code uses DELAY so ticker should be inititalized
393 * before cninit. And tick_init_params refers to hz, so * init_param1
394 * should be called first.
398 /* Detect the system type - this is needed for subsequent chipset-specific calls */
399 ar71xx_detect_sys_type();
400 ar71xx_detect_sys_frequency();
402 platform_counter_freq = ar71xx_cpu_freq();
403 mips_timer_init_params(platform_counter_freq, 1);
405 init_static_kenv(boot1_env, sizeof(boot1_env));
407 printf("CPU platform: %s\n", ar71xx_get_system_type());
408 printf("CPU Frequency=%d MHz\n", u_ar71xx_cpu_freq / 1000000);
409 printf("CPU DDR Frequency=%d MHz\n", u_ar71xx_ddr_freq / 1000000);
410 printf("CPU AHB Frequency=%d MHz\n", u_ar71xx_ahb_freq / 1000000);
411 printf("platform frequency: %lld MHz\n", platform_counter_freq / 1000000);
412 printf("CPU reference clock: %d MHz\n", u_ar71xx_refclk / 1000000);
413 printf("CPU MDIO clock: %d MHz\n", u_ar71xx_mdio_freq / 1000000);
414 printf("arguments: \n");
415 printf(" a0 = %08x\n", a0);
416 printf(" a1 = %08x\n", a1);
417 printf(" a2 = %08x\n", a2);
418 printf(" a3 = %08x\n", a3);
420 strcpy(cpu_model, ar71xx_get_system_type());
423 * XXX this code is very redboot specific.
426 if (MIPS_IS_VALID_PTR(argv)) {
427 for (i = 0; i < argc; i++) {
428 printf(" %s", argv[i]);
433 printf ("argv is invalid");
436 printf("Environment:\n");
437 if (MIPS_IS_VALID_PTR(envp)) {
438 for (i = 0; envp[i]; i+=2) {
439 printf(" %s = %s\n", envp[i], envp[i+1]);
440 kern_setenv(envp[i], envp[i+1]);
444 printf ("envp is invalid\n");
447 init_param2(physmem);
456 ar71xx_init_usb_peripheral();
459 * Reset internal ethernet switch, if one exists
461 ar71xx_reset_ethernet_switch();
464 * Initialise the gmac driver.
468 /* Redboot if_arge MAC address is in the environment */
469 (void) ar71xx_redboot_get_macaddr();
471 /* Various other boards need things to come out of EEPROM */
472 (void) ar71xx_platform_read_eeprom_mac();
474 /* Initialise the MAC address hint map */
475 ar71xx_platform_check_mac_hints();
479 if (boothowto & RB_KDB)
480 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");