85b543e06d
Now you see something like: # sysctl hw.model hw.model: Atheros AR9330 rev 1 Tested: * Carambola 2, AR9331 SoC
485 lines
12 KiB
C
485 lines
12 KiB
C
/*-
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* Copyright (c) 2009 Oleksandr Tymoshenko
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_ddb.h"
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#include "opt_ar71xx.h"
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/cons.h>
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#include <sys/kdb.h>
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#include <sys/reboot.h>
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#include <vm/vm.h>
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#include <vm/vm_page.h>
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#include <net/ethernet.h>
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#include <machine/clock.h>
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#include <machine/cpu.h>
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#include <machine/cpuregs.h>
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#include <machine/hwfunc.h>
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#include <machine/md_var.h>
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#include <machine/trap.h>
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#include <machine/vmparam.h>
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#include <mips/atheros/ar71xxreg.h>
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#include <mips/atheros/ar71xx_setup.h>
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#include <mips/atheros/ar71xx_cpudef.h>
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#include <mips/atheros/ar71xx_macaddr.h>
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#include <mips/sentry5/s5reg.h>
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extern char edata[], end[];
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/* 4KB static data aread to keep a copy of the bootload env until
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the dynamic kenv is setup */
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char boot1_env[4096];
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/*
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* We get a string in from Redboot with the all the arguments together,
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* "foo=bar bar=baz". Split them up and save in kenv.
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*/
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static void
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parse_argv(char *str)
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{
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char *n, *v;
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while ((v = strsep(&str, " ")) != NULL) {
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if (*v == '\0')
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continue;
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if (*v == '-') {
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while (*v != '\0') {
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v++;
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switch (*v) {
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case 'a': boothowto |= RB_ASKNAME; break;
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case 'd': boothowto |= RB_KDB; break;
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case 'g': boothowto |= RB_GDB; break;
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case 's': boothowto |= RB_SINGLE; break;
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case 'v': boothowto |= RB_VERBOSE; break;
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}
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}
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} else {
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n = strsep(&v, "=");
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if (v == NULL)
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kern_setenv(n, "1");
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else
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kern_setenv(n, v);
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}
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}
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}
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void
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platform_cpu_init()
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{
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/* Nothing special */
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}
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void
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platform_reset(void)
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{
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ar71xx_device_stop(RST_RESET_FULL_CHIP);
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/* Wait for reset */
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while(1)
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;
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}
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/*
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* Obtain the MAC address via the Redboot environment.
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*/
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static int
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ar71xx_redboot_get_macaddr(void)
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{
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char *var;
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int count = 0, i;
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uint32_t macaddr[ETHER_ADDR_LEN];
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uint8_t tmpmac[ETHER_ADDR_LEN];
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/*
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* "ethaddr" is passed via envp on RedBoot platforms
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* "kmac" is passed via argv on RouterBOOT platforms
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*/
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if ((var = kern_getenv("ethaddr")) != NULL ||
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(var = kern_getenv("kmac")) != NULL) {
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count = sscanf(var, "%x%*c%x%*c%x%*c%x%*c%x%*c%x",
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&macaddr[0], &macaddr[1],
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&macaddr[2], &macaddr[3],
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&macaddr[4], &macaddr[5]);
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if (count < 6) {
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memset(macaddr, 0,
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sizeof(macaddr));
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} else {
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for (i = 0; i < ETHER_ADDR_LEN; i++)
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tmpmac[i] = macaddr[i] & 0xff;
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(void) ar71xx_mac_addr_init(ar71xx_board_mac_addr,
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tmpmac,
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0, /* offset */
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0); /* is_local */
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}
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freeenv(var);
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return (0);
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}
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return (-1);
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}
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#ifdef AR71XX_ENV_ROUTERBOOT
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/*
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* RouterBoot gives us the board memory in a command line argument.
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*/
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static int
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ar71xx_routerboot_get_mem(int argc, char **argv)
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{
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int i, board_mem;
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/*
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* Protect ourselves from garbage in registers.
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*/
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if (!MIPS_IS_VALID_PTR(argv))
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return (0);
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for (i = 0; i < argc; i++) {
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if (argv[i] == NULL)
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continue;
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if (strncmp(argv[i], "mem=", 4) == 0) {
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if (sscanf(argv[i] + 4, "%dM", &board_mem) == 1)
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return (btoc(board_mem * 1024 * 1024));
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}
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}
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return (0);
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}
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#endif
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/*
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* Handle initialising the MAC address from a specific EEPROM
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* offset.
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*
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* This is done during (very) early boot.
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*
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* hint.ar71xx.0.eeprom_mac_addr=<address to read from>
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* hint.ar71xx.0.eeprom_mac_isascii=<0|1>
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*/
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static int
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ar71xx_platform_read_eeprom_mac(void)
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{
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long eeprom_mac_addr = 0;
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const char *mac;
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int i, readascii = 0;
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uint8_t macaddr[ETHER_ADDR_LEN];
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if (resource_long_value("ar71xx", 0, "eeprom_mac_addr",
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&eeprom_mac_addr) != 0)
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return (-1);
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/* get a pointer to the EEPROM MAC address */
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mac = (const char *) MIPS_PHYS_TO_KSEG1(eeprom_mac_addr);
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/* Check if it's ASCII or not */
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if (resource_int_value("ar71xx", 0, "eeprom_mac_isascii",
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&readascii) == 0 && readascii == 1) {
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printf("ar71xx: Overriding MAC from EEPROM (ascii)\n");
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for (i = 0; i < 6; i++) {
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macaddr[i] = strtol(&(mac[i*3]), NULL, 16);
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}
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} else {
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printf("ar71xx: Overriding MAC from EEPROM\n");
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for (i = 0; i < 6; i++) {
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macaddr[i] = mac[i];
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}
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}
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/* Set the default board MAC */
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(void) ar71xx_mac_addr_init(ar71xx_board_mac_addr,
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macaddr,
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0, /* offset */
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0); /* is_local */
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printf("ar71xx: Board MAC: %6D\n", ar71xx_board_mac_addr, ":");
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return (0);
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}
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/*
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* Populate a kenv hint for the given device based on the given
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* MAC address and offset.
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*
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* Returns 0 if ok, < 0 on error.
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*/
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static int
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ar71xx_platform_set_mac_hint(const char *dev, int unit,
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const uint8_t *macaddr, int offset, int islocal)
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{
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char macstr[32];
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uint8_t lclmac[ETHER_ADDR_LEN];
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char devstr[32];
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/* Initialise the MAC address, plus/minus the offset */
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if (ar71xx_mac_addr_init(lclmac, macaddr, offset, islocal) != 0) {
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return (-1);
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}
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/* Turn it into a string */
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snprintf(macstr, 32, "%6D", lclmac, ":");
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snprintf(devstr, 32, "hint.%s.%d.macaddr", dev, unit);
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printf(" %s => %s\n", devstr, macstr);
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/* Call setenv */
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if (kern_setenv(devstr, macstr) != 0) {
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printf("%s: failed to set hint (%s => %s)\n",
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__func__,
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devstr,
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macstr);
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return (-1);
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}
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return (0);
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}
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/*
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* Iterate through the list of boot time hints that populate
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* a device MAC address hint based on the "board" MAC address.
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*
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* ar71xx_mac_map.X.devid=<device id, eg ath>
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* ar71xx_mac_map.X.unitid=<unit id, eg 0>
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* ar71xx_mac_map.X.offset=<mac address value offset>
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* ar71xx_mac_map.X.is_local=<1 or 0>
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*/
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static int
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ar71xx_platform_check_mac_hints(void)
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{
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int i;
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const char *devid;
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int offset, is_local, unitid;
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for (i = 0; i < 8; i++) {
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if (resource_string_value("ar71xx_mac_map", i, "devid",
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&devid) != 0)
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break;
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if (resource_int_value("ar71xx_mac_map", i, "unitid",
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&unitid) != 0)
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break;
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if (resource_int_value("ar71xx_mac_map", i, "offset",
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&offset) != 0)
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break;
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if (resource_int_value("ar71xx_mac_map", i, "is_local",
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&is_local) != 0)
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break;
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printf("ar71xx: devid '%s.%d', MAC offset '%d'\n",
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devid, unitid, offset);
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(void) ar71xx_platform_set_mac_hint(devid, unitid,
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ar71xx_board_mac_addr, offset, is_local);
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}
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return (0);
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}
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extern char cpu_model[];
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void
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platform_start(__register_t a0 __unused, __register_t a1 __unused,
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__register_t a2 __unused, __register_t a3 __unused)
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{
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uint64_t platform_counter_freq;
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int argc = 0, i;
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char **argv = NULL, **envp = NULL;
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vm_offset_t kernend;
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/*
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* clear the BSS and SBSS segments, this should be first call in
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* the function
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*/
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kernend = (vm_offset_t)&end;
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memset(&edata, 0, kernend - (vm_offset_t)(&edata));
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mips_postboot_fixup();
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/* Initialize pcpu stuff */
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mips_pcpu0_init();
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/*
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* Until some more sensible abstractions for uboot/redboot
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* environment handling, we have to make this a compile-time
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* hack. The existing code handles the uboot environment
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* very incorrectly so we should just ignore initialising
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* the relevant pointers.
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*/
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#ifndef AR71XX_ENV_UBOOT
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argc = a0;
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argv = (char**)a1;
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envp = (char**)a2;
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#endif
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/*
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* Protect ourselves from garbage in registers
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*/
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if (MIPS_IS_VALID_PTR(envp)) {
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for (i = 0; envp[i]; i += 2) {
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if (strcmp(envp[i], "memsize") == 0)
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realmem = btoc(strtoul(envp[i+1], NULL, 16));
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else if (strcmp(envp[i], "bootverbose") == 0)
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bootverbose = btoc(strtoul(envp[i+1], NULL, 10));
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}
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}
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bootverbose = 1;
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#ifdef AR71XX_ENV_ROUTERBOOT
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/*
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* RouterBoot informs the board memory as a command line argument.
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*/
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if (realmem == 0)
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realmem = ar71xx_routerboot_get_mem(argc, argv);
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#endif
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/*
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* Just wild guess. RedBoot let us down and didn't reported
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* memory size
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*/
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if (realmem == 0)
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realmem = btoc(32*1024*1024);
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/*
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* Allow build-time override in case Redboot lies
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* or in other situations (eg where there's u-boot)
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* where there isn't (yet) a convienent method of
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* being told how much RAM is available.
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*
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* This happens on at least the Ubiquiti LS-SR71A
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* board, where redboot says there's 16mb of RAM
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* but in fact there's 32mb.
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*/
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#if defined(AR71XX_REALMEM)
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realmem = btoc(AR71XX_REALMEM);
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#endif
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/* phys_avail regions are in bytes */
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phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
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phys_avail[1] = ctob(realmem);
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dump_avail[0] = phys_avail[0];
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dump_avail[1] = phys_avail[1] - phys_avail[0];
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physmem = realmem;
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/*
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* ns8250 uart code uses DELAY so ticker should be inititalized
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* before cninit. And tick_init_params refers to hz, so * init_param1
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* should be called first.
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*/
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init_param1();
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/* Detect the system type - this is needed for subsequent chipset-specific calls */
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ar71xx_detect_sys_type();
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ar71xx_detect_sys_frequency();
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platform_counter_freq = ar71xx_cpu_freq();
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mips_timer_init_params(platform_counter_freq, 1);
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cninit();
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init_static_kenv(boot1_env, sizeof(boot1_env));
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printf("CPU platform: %s\n", ar71xx_get_system_type());
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printf("CPU Frequency=%d MHz\n", u_ar71xx_cpu_freq / 1000000);
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printf("CPU DDR Frequency=%d MHz\n", u_ar71xx_ddr_freq / 1000000);
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printf("CPU AHB Frequency=%d MHz\n", u_ar71xx_ahb_freq / 1000000);
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printf("platform frequency: %lld MHz\n", platform_counter_freq / 1000000);
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printf("CPU reference clock: %d MHz\n", u_ar71xx_refclk / 1000000);
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printf("CPU MDIO clock: %d MHz\n", u_ar71xx_mdio_freq / 1000000);
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printf("arguments: \n");
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printf(" a0 = %08x\n", a0);
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printf(" a1 = %08x\n", a1);
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printf(" a2 = %08x\n", a2);
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printf(" a3 = %08x\n", a3);
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strcpy(cpu_model, ar71xx_get_system_type());
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/*
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* XXX this code is very redboot specific.
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*/
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printf("Cmd line:");
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if (MIPS_IS_VALID_PTR(argv)) {
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for (i = 0; i < argc; i++) {
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printf(" %s", argv[i]);
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parse_argv(argv[i]);
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}
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}
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else
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printf ("argv is invalid");
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printf("\n");
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printf("Environment:\n");
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if (MIPS_IS_VALID_PTR(envp)) {
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for (i = 0; envp[i]; i+=2) {
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printf(" %s = %s\n", envp[i], envp[i+1]);
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kern_setenv(envp[i], envp[i+1]);
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}
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}
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else
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printf ("envp is invalid\n");
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/* Platform setup */
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init_param2(physmem);
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mips_cpu_init();
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pmap_bootstrap();
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mips_proc0_init();
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mutex_init();
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/*
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* Reset USB devices
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*/
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ar71xx_init_usb_peripheral();
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/*
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* Reset internal ethernet switch, if one exists
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*/
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ar71xx_reset_ethernet_switch();
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/*
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* Initialise the gmac driver.
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*/
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ar71xx_init_gmac();
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/* Redboot if_arge MAC address is in the environment */
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(void) ar71xx_redboot_get_macaddr();
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/* Various other boards need things to come out of EEPROM */
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(void) ar71xx_platform_read_eeprom_mac();
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/* Initialise the MAC address hint map */
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ar71xx_platform_check_mac_hints();
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kdb_init();
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#ifdef KDB
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if (boothowto & RB_KDB)
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kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
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#endif
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}
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