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u-boot/board/siemens/corvus/board.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

322 lines
7.8 KiB
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// SPDX-License-Identifier: GPL-2.0+
/*
* Board functions for Siemens CORVUS (AT91SAM9G45) based board
* (C) Copyright 2013 Siemens AG
*
* Based on:
* U-Boot file: board/atmel/at91sam9m10g45ek/at91sam9m10g45ek.c
* (C) Copyright 2007-2008
* Stelian Pop <stelian@popies.net>
* Lead Tech Design <www.leadtechdesign.com>
*/
#include <common.h>
#include <dm.h>
#include <asm/io.h>
#include <asm/arch/at91sam9g45_matrix.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/atmel_serial.h>
#include <asm/arch/gpio.h>
#include <asm/gpio.h>
#include <asm/arch/clk.h>
#if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
#include <net.h>
#endif
#ifndef CONFIG_DM_ETH
#include <netdev.h>
#endif
#include <spi.h>
#ifdef CONFIG_USB_GADGET_ATMEL_USBA
#include <asm/arch/atmel_usba_udc.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
static void corvus_request_gpio(void)
{
gpio_request(CONFIG_SYS_NAND_ENABLE_PIN, "nand ena");
gpio_request(CONFIG_SYS_NAND_READY_PIN, "nand rdy");
gpio_request(AT91_PIN_PD7, "d0");
gpio_request(AT91_PIN_PD8, "d1");
gpio_request(AT91_PIN_PA12, "d2");
gpio_request(AT91_PIN_PA13, "d3");
gpio_request(AT91_PIN_PA15, "d4");
gpio_request(AT91_PIN_PB7, "recovery button");
gpio_request(AT91_PIN_PD1, "USB0");
gpio_request(AT91_PIN_PD3, "USB1");
gpio_request(AT91_PIN_PB18, "SPICS1");
gpio_request(AT91_PIN_PB3, "SPICS0");
gpio_request(CONFIG_RED_LED, "red led");
gpio_request(CONFIG_GREEN_LED, "green led");
}
static void corvus_nand_hw_init(void)
{
struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
unsigned long csa;
/* Enable CS3 */
csa = readl(&matrix->ebicsa);
csa |= AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA;
writel(csa, &matrix->ebicsa);
/* Configure SMC CS3 for NAND/SmartMedia */
writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
&smc->cs[3].setup);
writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) |
AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4),
&smc->cs[3].pulse);
writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
&smc->cs[3].cycle);
writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
AT91_SMC_MODE_EXNW_DISABLE |
#ifdef CONFIG_SYS_NAND_DBW_16
AT91_SMC_MODE_DBW_16 |
#else /* CONFIG_SYS_NAND_DBW_8 */
AT91_SMC_MODE_DBW_8 |
#endif
AT91_SMC_MODE_TDF_CYCLE(3),
&smc->cs[3].mode);
at91_periph_clk_enable(ATMEL_ID_PIOC);
at91_periph_clk_enable(ATMEL_ID_PIOA);
/* Enable NandFlash */
at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
}
#if defined(CONFIG_SPL_BUILD)
#include <spl.h>
#include <nand.h>
void spl_board_init(void)
{
corvus_request_gpio();
/*
* For on the sam9m10g45ek board, the chip wm9711 stay in the test
* mode, so it need do some action to exit mode.
*/
at91_set_gpio_output(AT91_PIN_PD7, 0);
at91_set_gpio_output(AT91_PIN_PD8, 0);
at91_set_pio_pullup(AT91_PIO_PORTD, 7, 1);
at91_set_pio_pullup(AT91_PIO_PORTD, 8, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 12, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 13, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
corvus_nand_hw_init();
/* Configure recovery button PINs */
at91_set_gpio_input(AT91_PIN_PB7, 1);
/* check if button is pressed */
if (at91_get_gpio_value(AT91_PIN_PB7) == 0) {
u32 boot_device;
debug("Recovery button pressed\n");
boot_device = spl_boot_device();
switch (boot_device) {
#ifdef CONFIG_SPL_NAND_SUPPORT
case BOOT_DEVICE_NAND:
nand_init();
spl_nand_erase_one(0, 0);
break;
#endif
}
}
}
#include <asm/arch/atmel_mpddrc.h>
static void ddr2_conf(struct atmel_mpddrc_config *ddr2)
{
ddr2->md = (ATMEL_MPDDRC_MD_DBW_16_BITS | ATMEL_MPDDRC_MD_DDR2_SDRAM);
ddr2->cr = (ATMEL_MPDDRC_CR_NC_COL_10 |
ATMEL_MPDDRC_CR_NR_ROW_14 |
ATMEL_MPDDRC_CR_DIC_DS |
ATMEL_MPDDRC_CR_DQMS_SHARED |
ATMEL_MPDDRC_CR_CAS_DDR_CAS3);
ddr2->rtr = 0x24b;
ddr2->tpr0 = (6 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET |/* 6*7.5 = 45 ns */
2 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET |/* 2*7.5 = 15 ns */
2 << ATMEL_MPDDRC_TPR0_TWR_OFFSET | /* 2*7.5 = 15 ns */
8 << ATMEL_MPDDRC_TPR0_TRC_OFFSET | /* 8*7.5 = 75 ns */
2 << ATMEL_MPDDRC_TPR0_TRP_OFFSET | /* 2*7.5 = 15 ns */
1 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET | /* 1*7.5= 7.5 ns*/
1 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET | /* 1 clk cycle */
2 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET); /* 2 clk cycles */
ddr2->tpr1 = (2 << ATMEL_MPDDRC_TPR1_TXP_OFFSET | /* 2*7.5 = 15 ns */
200 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET |
16 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET |
14 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET);
ddr2->tpr2 = (1 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET |
0 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET |
7 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET |
2 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET);
}
void mem_init(void)
{
struct atmel_mpddrc_config ddr2;
ddr2_conf(&ddr2);
at91_system_clk_enable(AT91_PMC_DDR);
/* DDRAM2 Controller initialize */
ddr2_init(ATMEL_BASE_DDRSDRC0, ATMEL_BASE_CS6, &ddr2);
}
#endif
#ifdef CONFIG_CMD_USB
static void taurus_usb_hw_init(void)
{
at91_periph_clk_enable(ATMEL_ID_PIODE);
at91_set_gpio_output(AT91_PIN_PD1, 0);
at91_set_gpio_output(AT91_PIN_PD3, 0);
}
#endif
#ifdef CONFIG_MACB
static void corvus_macb_hw_init(void)
{
/* Enable clock */
at91_periph_clk_enable(ATMEL_ID_EMAC);
/*
* Disable pull-up on:
* RXDV (PA15) => PHY normal mode (not Test mode)
* ERX0 (PA12) => PHY ADDR0
* ERX1 (PA13) => PHY ADDR1 => PHYADDR = 0x0
*
* PHY has internal pull-down
*/
at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 12, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 13, 0);
at91_phy_reset();
/* Re-enable pull-up */
at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 12, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 13, 1);
/* And the pins. */
at91_macb_hw_init();
}
#endif
int board_early_init_f(void)
{
at91_seriald_hw_init();
corvus_request_gpio();
return 0;
}
#ifdef CONFIG_USB_GADGET_ATMEL_USBA
/* from ./arch/arm/mach-at91/armv7/sama5d3_devices.c */
void at91_udp_hw_init(void)
{
/* Enable UPLL clock */
at91_upll_clk_enable();
/* Enable UDPHS clock */
at91_periph_clk_enable(ATMEL_ID_UDPHS);
}
#endif
int board_init(void)
{
/* address of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
/* we have to request the gpios again after relocation */
corvus_request_gpio();
#ifdef CONFIG_CMD_NAND
corvus_nand_hw_init();
#endif
#ifdef CONFIG_ATMEL_SPI
at91_spi0_hw_init(1 << 4);
#endif
#ifdef CONFIG_MACB
corvus_macb_hw_init();
#endif
#ifdef CONFIG_CMD_USB
taurus_usb_hw_init();
#endif
#ifdef CONFIG_USB_GADGET_ATMEL_USBA
at91_udp_hw_init();
usba_udc_probe(&pdata);
#endif
return 0;
}
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
CONFIG_SYS_SDRAM_SIZE);
return 0;
}
#ifndef CONFIG_DM_ETH
int board_eth_init(bd_t *bis)
{
int rc = 0;
#ifdef CONFIG_MACB
rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC, 0x00);
#endif
return rc;
}
#endif
/* SPI chip select control */
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
{
return bus == 0 && cs < 2;
}
void spi_cs_activate(struct spi_slave *slave)
{
switch (slave->cs) {
case 1:
at91_set_gpio_output(AT91_PIN_PB18, 0);
break;
case 0:
default:
at91_set_gpio_output(AT91_PIN_PB3, 0);
break;
}
}
void spi_cs_deactivate(struct spi_slave *slave)
{
switch (slave->cs) {
case 1:
at91_set_gpio_output(AT91_PIN_PB18, 1);
break;
case 0:
default:
at91_set_gpio_output(AT91_PIN_PB3, 1);
break;
}
}
static struct atmel_serial_platdata at91sam9260_serial_plat = {
.base_addr = ATMEL_BASE_DBGU,
};
U_BOOT_DEVICE(at91sam9260_serial) = {
.name = "serial_atmel",
.platdata = &at91sam9260_serial_plat,
};
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