mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-10-21 05:24:56 +00:00
9879842c6f
Historically (for compatibility with very old platforms), two different types of micro support cards have been used with the UniPhier SoC development boards. It has been painful to maintain both. Having one of them is enough. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
157 lines
3.2 KiB
C
157 lines
3.2 KiB
C
/*
|
|
* Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <linux/io.h>
|
|
#include <mach/board.h>
|
|
|
|
#define MICRO_SUPPORT_CARD_RESET \
|
|
((CONFIG_SUPPORT_CARD_BASE) + 0x000D0034)
|
|
#define 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, MICRO_SUPPORT_CARD_RESET);
|
|
}
|
|
|
|
void support_card_reset(void)
|
|
{
|
|
writel(3, MICRO_SUPPORT_CARD_RESET);
|
|
}
|
|
|
|
static int support_card_show_revision(void)
|
|
{
|
|
u32 revision;
|
|
|
|
revision = readl(MICRO_SUPPORT_CARD_REVISION);
|
|
printf("(CPLD version %d.%d)\n", revision >> 4, revision & 0xf);
|
|
return 0;
|
|
}
|
|
|
|
int check_support_card(void)
|
|
{
|
|
printf("SC: Micro Support Card ");
|
|
return support_card_show_revision();
|
|
}
|
|
|
|
void support_card_init(void)
|
|
{
|
|
/*
|
|
* After power on, we need to keep the LAN controller in reset state
|
|
* for a while. (200 usec)
|
|
* Fortunately, enough wait time is already inserted in pll_init()
|
|
* function. So we do not have to wait here.
|
|
*/
|
|
support_card_reset_deassert();
|
|
}
|
|
|
|
#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>
|
|
#include <mach/sbc-regs.h>
|
|
|
|
struct memory_bank {
|
|
phys_addr_t base;
|
|
unsigned long size;
|
|
};
|
|
|
|
static int mem_is_flash(const struct memory_bank *mem)
|
|
{
|
|
const int loop = 128;
|
|
u32 *scratch_addr;
|
|
u32 saved_value;
|
|
int ret = 1;
|
|
int i;
|
|
|
|
/* just in case, use the tail of the memory bank */
|
|
scratch_addr = map_physmem(mem->base + mem->size - sizeof(u32) * loop,
|
|
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;
|
|
}
|
|
|
|
/* {address, size} */
|
|
static const struct memory_bank memory_banks[] = {
|
|
{0x02000000, 0x01f00000},
|
|
};
|
|
|
|
static const struct memory_bank
|
|
*flash_banks_list[CONFIG_SYS_MAX_FLASH_BANKS_DETECT];
|
|
|
|
phys_addr_t cfi_flash_bank_addr(int i)
|
|
{
|
|
return flash_banks_list[i]->base;
|
|
}
|
|
|
|
unsigned long cfi_flash_bank_size(int i)
|
|
{
|
|
return flash_banks_list[i]->size;
|
|
}
|
|
|
|
static void detect_num_flash_banks(void)
|
|
{
|
|
const struct memory_bank *memory_bank, *end;
|
|
|
|
cfi_flash_num_flash_banks = 0;
|
|
|
|
memory_bank = memory_banks;
|
|
end = memory_bank + ARRAY_SIZE(memory_banks);
|
|
|
|
for (; memory_bank < end; memory_bank++) {
|
|
if (cfi_flash_num_flash_banks >=
|
|
CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
|
|
break;
|
|
|
|
if (mem_is_flash(memory_bank)) {
|
|
flash_banks_list[cfi_flash_num_flash_banks] =
|
|
memory_bank;
|
|
|
|
debug("flash bank found: base = 0x%lx, size = 0x%lx\n",
|
|
memory_bank->base, memory_bank->size);
|
|
cfi_flash_num_flash_banks++;
|
|
}
|
|
}
|
|
|
|
debug("number of flash banks: %d\n", cfi_flash_num_flash_banks);
|
|
}
|
|
#else /* CONFIG_SYS_NO_FLASH */
|
|
void detect_num_flash_banks(void)
|
|
{
|
|
};
|
|
#endif /* CONFIG_SYS_NO_FLASH */
|
|
|
|
void support_card_late_init(void)
|
|
{
|
|
detect_num_flash_banks();
|
|
}
|