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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Based on Linux driver:
* Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
* Copyright (C) 2006 FON Technology, SL.
* Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
* Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
* Ported to Barebox:
* Copyright (C) 2013 Oleksij Rempel <linux@rempel-privat.de>
*/
#include <common.h>
#include <io.h>
#include <mach/ar2312_regs.h>
#include <mach/ar231x_platform.h>
#include <linux/stddef.h>
#include <net.h>
#define HDR_SIZE 6
#define TAB_1 "\t"
#define TAB_2 "\t\t"
extern struct ar231x_board_data ar231x_board;
static void
ar231x_print_mac(unsigned char *mac)
{
int i;
for (i = 0; i < 5; i++)
printf("%02x:", mac[i]);
printf("%02x\n", mac[5]);
}
#ifdef DEBUG_BOARD
static void
ar231x_print_board_config(struct ar231x_board_config *config)
{
printf("board config:\n");
printf(TAB_1 "chsum:" TAB_2 "%04x\n", config->cksum);
printf(TAB_1 "rev:" TAB_2 "%04x\n", config->rev);
printf(TAB_1 "name:" TAB_2 "%s\n", config->board_name);
printf(TAB_1 "maj:" TAB_2 "%04x\n", config->major);
printf(TAB_1 "min:" TAB_2 "%04x\n", config->minor);
printf(TAB_1 "board flags:" TAB_1 "%08x\n", config->flags);
if (config->flags & BD_ENET0)
printf(TAB_2 "ENET0 is stuffed\n");
if (config->flags & BD_ENET1)
printf(TAB_2 "ENET1 is stuffed\n");
if (config->flags & BD_UART1)
printf(TAB_2 "UART1 is stuffed\n");
if (config->flags & BD_UART0)
printf(TAB_2 "UART0 is stuffed (dma)\n");
if (config->flags & BD_RSTFACTORY)
printf(TAB_2 "Reset factory defaults stuffed\n");
if (config->flags & BD_SYSLED)
printf(TAB_2 "System LED stuffed\n");
if (config->flags & BD_EXTUARTCLK)
printf(TAB_2 "External UART clock\n");
if (config->flags & BD_CPUFREQ)
printf(TAB_2 "cpu freq is valid in nvram\n");
if (config->flags & BD_SYSFREQ)
printf(TAB_2 "sys freq is set in nvram\n");
if (config->flags & BD_WLAN0)
printf(TAB_2 "Enable WLAN0\n");
if (config->flags & BD_MEMCAP)
printf(TAB_2 "CAP SDRAM @ memCap for testing\n");
if (config->flags & BD_DISWATCHDOG)
printf(TAB_2 "disable system watchdog\n");
if (config->flags & BD_WLAN1)
printf(TAB_2 "Enable WLAN1 (ar5212)\n");
if (config->flags & BD_ISCASPER)
printf(TAB_2 "FLAG for AR2312\n");
if (config->flags & BD_WLAN0_2G_EN)
printf(TAB_2 "FLAG for radio0_2G\n");
if (config->flags & BD_WLAN0_5G_EN)
printf(TAB_2 "FLAG for radio0_5G\n");
if (config->flags & BD_WLAN1_2G_EN)
printf(TAB_2 "FLAG for radio1_2G\n");
if (config->flags & BD_WLAN1_5G_EN)
printf(TAB_2 "FLAG for radio1_5G\n");
printf(TAB_1 "ResetConf GPIO pin:" TAB_1 "%04x\n",
config->reset_config_gpio);
printf(TAB_1 "Sys LED GPIO pin:" TAB_1 "%04x\n", config->sys_led_gpio);
printf(TAB_1 "CPU Freq:" TAB_2 "%u\n", config->cpu_freq);
printf(TAB_1 "Sys Freq:" TAB_2 "%u\n", config->sys_freq);
printf(TAB_1 "Calculated Freq:" TAB_1 "%u\n", config->cnt_freq);
printf(TAB_1 "wlan0 mac:" TAB_2);
ar231x_print_mac(config->wlan0_mac);
printf(TAB_1 "wlan1 mac:" TAB_2);
ar231x_print_mac(config->wlan1_mac);
printf(TAB_1 "eth0 mac:" TAB_2);
ar231x_print_mac(config->enet0_mac);
printf(TAB_1 "eth1 mac:" TAB_2);
ar231x_print_mac(config->enet1_mac);
printf(TAB_1 "Pseudo PCIID:" TAB_2 "%04x\n", config->pci_id);
printf(TAB_1 "Mem capacity:" TAB_2 "%u\n", config->mem_cap);
}
#endif
static u16
ar231x_cksum16(u8 *data, int size)
{
int i;
u16 sum = 0;
for (i = 0; i < size; i++)
sum += data[i];
return sum;
}
static void
ar231x_check_mac(u8 *addr)
{
if (!is_valid_ether_addr(addr)) {
pr_warn("config: no valid mac was found. "
"Generating random mac: ");
random_ether_addr(addr);
ar231x_print_mac(addr);
}
}
static u8 *
ar231x_find_board_config(u8 *flash_limit)
{
u8 *addr;
int found = 0;
for (addr = flash_limit - 0x1000;
addr >= flash_limit - 0x30000;
addr -= 0x1000) {
if (*((u32 *)addr) == AR231X_BD_MAGIC) {
found = 1;
pr_debug("config at %x\n", addr);
break;
}
}
if (!found)
addr = NULL;
return addr;
}
void
ar231x_find_config(u8 *flash_limit)
{
struct ar231x_board_config *config;
u8 *bcfg, bsize;
u8 brocken;
bcfg = ar231x_find_board_config(flash_limit);
bsize = sizeof(struct ar231x_board_config);
config = xzalloc(bsize);
ar231x_board.config = config;
if (bcfg) {
u16 cksum;
/* Copy the board and radio data to RAM.
* If flash will go to CFI mode, we won't
* be able to read to from mapped memory area */
memcpy(config, bcfg, bsize);
cksum = 0xca + ar231x_cksum16((unsigned char *)config + HDR_SIZE,
sizeof(struct ar231x_board_config) - HDR_SIZE);
if (cksum != config->cksum) {
pr_err("config: checksum is invalid: %04x != %04x\n",
cksum, config->cksum);
brocken = 1;
}
/* ar231x_print_board_config(config); */
}
/* We do not care about wlans here */
ar231x_check_mac(config->enet0_mac);
ar231x_check_mac(config->enet1_mac);
}
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