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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2018 Microsemi Corporation
*/
#include <common.h>
#include <asm/io.h>
#include <asm/addrspace.h>
#include <asm/types.h>
#include <environment.h>
#include <spi.h>
DECLARE_GLOBAL_DATA_PTR;
enum {
BOARD_TYPE_PCB120 = 0xAABBCC00,
BOARD_TYPE_PCB123,
};
void external_cs_manage(struct udevice *dev, bool enable)
{
u32 cs = spi_chip_select(dev);
/* IF_SI0_OWNER, select the owner of the SI interface
* Encoding: 0: SI Slave
* 1: SI Boot Master
* 2: SI Master Controller
*/
if (!enable) {
writel(ICPU_SW_MODE_SW_PIN_CTRL_MODE |
ICPU_SW_MODE_SW_SPI_CS(BIT(cs)), BASE_CFG + ICPU_SW_MODE);
clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL,
ICPU_GENERAL_CTRL_IF_SI_OWNER_M,
ICPU_GENERAL_CTRL_IF_SI_OWNER(2));
} else {
writel(0, BASE_CFG + ICPU_SW_MODE);
clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL,
ICPU_GENERAL_CTRL_IF_SI_OWNER_M,
ICPU_GENERAL_CTRL_IF_SI_OWNER(1));
}
}
void board_debug_uart_init(void)
{
/* too early for the pinctrl driver, so configure the UART pins here */
mscc_gpio_set_alternate(6, 1);
mscc_gpio_set_alternate(7, 1);
}
int board_early_init_r(void)
{
/* Prepare SPI controller to be used in master mode */
writel(0, BASE_CFG + ICPU_SW_MODE);
clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL,
ICPU_GENERAL_CTRL_IF_SI_OWNER_M,
ICPU_GENERAL_CTRL_IF_SI_OWNER(2));
/* Address of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE;
return 0;
}
static void do_board_detect(void)
{
u16 dummy = 0;
/* Enable MIIM */
mscc_gpio_set_alternate(14, 1);
mscc_gpio_set_alternate(15, 1);
if (mscc_phy_rd(1, 0, 0, &dummy) == 0)
gd->board_type = BOARD_TYPE_PCB120;
else
gd->board_type = BOARD_TYPE_PCB123;
}
#if defined(CONFIG_MULTI_DTB_FIT)
int board_fit_config_name_match(const char *name)
{
if (gd->board_type == BOARD_TYPE_PCB120 &&
strcmp(name, "ocelot_pcb120") == 0)
return 0;
if (gd->board_type == BOARD_TYPE_PCB123 &&
strcmp(name, "ocelot_pcb123") == 0)
return 0;
return -1;
}
#endif
#if defined(CONFIG_DTB_RESELECT)
int embedded_dtb_select(void)
{
do_board_detect();
fdtdec_setup();
return 0;
}
#endif
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