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/*
* Copyright (C) 2012-2014 Panasonic Corporation
* Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/board.h>
#if defined(CONFIG_PFC_MICRO_SUPPORT_CARD)
#define PFC_MICRO_SUPPORT_CARD_RESET \
((CONFIG_SUPPORT_CARD_BASE) + 0x000D0034)
#define PFC_MICRO_SUPPORT_CARD_REVISION \
((CONFIG_SUPPORT_CARD_BASE) + 0x000D00E0)
/*
* 0: reset deassert, 1: reset
*
* bit[0]: LAN, I2C, LED
* bit[1]: UART
*/
void support_card_reset_deassert(void)
{
writel(0, PFC_MICRO_SUPPORT_CARD_RESET);
}
void support_card_reset(void)
{
writel(3, PFC_MICRO_SUPPORT_CARD_RESET);
}
static int support_card_show_revision(void)
{
u32 revision;
revision = readl(PFC_MICRO_SUPPORT_CARD_REVISION);
printf("(PFC CPLD version %d.%d)\n", revision >> 4, revision & 0xf);
return 0;
}
#endif
#if defined(CONFIG_DCC_MICRO_SUPPORT_CARD)
#define DCC_MICRO_SUPPORT_CARD_RESET_LAN \
((CONFIG_SUPPORT_CARD_BASE) + 0x00401300)
#define DCC_MICRO_SUPPORT_CARD_RESET_UART \
((CONFIG_SUPPORT_CARD_BASE) + 0x00401304)
#define DCC_MICRO_SUPPORT_CARD_RESET_I2C \
((CONFIG_SUPPORT_CARD_BASE) + 0x00401308)
#define DCC_MICRO_SUPPORT_CARD_REVISION \
((CONFIG_SUPPORT_CARD_BASE) + 0x005000E0)
void support_card_reset_deassert(void)
{
writel(1, DCC_MICRO_SUPPORT_CARD_RESET_LAN); /* LAN and LED */
writel(1, DCC_MICRO_SUPPORT_CARD_RESET_UART); /* UART */
writel(1, DCC_MICRO_SUPPORT_CARD_RESET_I2C); /* I2C */
}
void support_card_reset(void)
{
writel(0, DCC_MICRO_SUPPORT_CARD_RESET_LAN); /* LAN and LED */
writel(0, DCC_MICRO_SUPPORT_CARD_RESET_UART); /* UART */
writel(0, DCC_MICRO_SUPPORT_CARD_RESET_I2C); /* I2C */
}
static int support_card_show_revision(void)
{
u32 revision;
revision = readl(DCC_MICRO_SUPPORT_CARD_REVISION);
if (revision >= 0x67) {
printf("(DCC CPLD version 3.%d.%d)\n",
revision >> 4, revision & 0xf);
return 0;
} else {
printf("(DCC CPLD unknown version)\n");
return -1;
}
}
#endif
void support_card_init(void)
{
/*
* After power on, we need to keep the LAN controller in reset state
* for a while. (200 usec)
* Fortunatelly, enough wait time is already inserted in pll_init()
* function. So we do not have to wait here.
*/
support_card_reset_deassert();
}
int check_support_card(void)
{
printf("SC: Micro Support Card ");
return support_card_show_revision();
}
#if defined(CONFIG_SMC911X)
#include <netdev.h>
int board_eth_init(bd_t *bis)
{
return smc911x_initialize(0, CONFIG_SMC911X_BASE);
}
#endif
#if !defined(CONFIG_SYS_NO_FLASH)
#include <mtd/cfi_flash.h>
#if CONFIG_SYS_MAX_FLASH_BANKS > 1
static phys_addr_t flash_banks_list[CONFIG_SYS_MAX_FLASH_BANKS] =
CONFIG_SYS_FLASH_BANKS_LIST;
phys_addr_t cfi_flash_bank_addr(int i)
{
return flash_banks_list[i];
}
#endif
int mem_is_flash(phys_addr_t base)
{
const int loop = 128;
u32 *scratch_addr;
u32 saved_value;
int ret = 1;
int i;
scratch_addr = map_physmem(base + 0x01e00000,
sizeof(u32) * loop, MAP_NOCACHE);
for (i = 0; i < loop; i++, scratch_addr++) {
saved_value = readl(scratch_addr);
writel(~saved_value, scratch_addr);
if (readl(scratch_addr) != saved_value) {
/* We assume no memory or SRAM here. */
writel(saved_value, scratch_addr);
ret = 0;
break;
}
}
unmap_physmem(scratch_addr, MAP_NOCACHE);
return ret;
}
int board_flash_wp_on(void)
{
int i;
int ret = 1;
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
if (mem_is_flash(cfi_flash_bank_addr(i))) {
/*
* We found at least one flash.
* We need to return 0 and call flash_init().
*/
ret = 0;
}
#if CONFIG_SYS_MAX_FLASH_BANKS > 1
else {
/*
* We might have a SRAM here.
* To prevent SRAM data from being destroyed,
* we set dummy address (SDRAM).
*/
flash_banks_list[i] = 0x80000000 + 0x10000 * i;
}
#endif
}
return ret;
}
#endif
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