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u-boot/board/siemens/taurus/taurus.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

453 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* Board functions for Siemens TAURUS (AT91SAM9G20) based boards
* (C) Copyright Siemens AG
*
* Based on:
* U-Boot file: board/atmel/at91sam9260ek/at91sam9260ek.c
*
* (C) Copyright 2007-2008
* Stelian Pop <stelian@popies.net>
* Lead Tech Design <www.leadtechdesign.com>
*/
#include <command.h>
#include <common.h>
#include <dm.h>
#include <environment.h>
#include <asm/io.h>
#include <asm/arch/at91sam9260_matrix.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/gpio.h>
#include <asm/arch/at91sam9_sdramc.h>
#include <asm/arch/atmel_serial.h>
#include <asm/arch/clk.h>
#include <asm/gpio.h>
#include <linux/mtd/rawnand.h>
#include <atmel_mci.h>
#include <asm/arch/at91_spi.h>
#include <spi.h>
#include <net.h>
#ifndef CONFIG_DM_ETH
#include <netdev.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
static void taurus_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_PA25, "ena PHY");
}
static void taurus_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;
/* Assign CS3 to NAND/SmartMedia Interface */
csa = readl(&matrix->ebicsa);
csa |= AT91_MATRIX_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(3) |
AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(3),
&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 |
AT91_SMC_MODE_DBW_8 |
AT91_SMC_MODE_TDF_CYCLE(3),
&smc->cs[3].mode);
/* Configure RDY/BSY */
at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
/* Enable NandFlash */
at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
}
#if defined(CONFIG_SPL_BUILD)
#include <spl.h>
#include <nand.h>
#include <spi_flash.h>
void matrix_init(void)
{
struct at91_matrix *mat = (struct at91_matrix *)ATMEL_BASE_MATRIX;
writel((readl(&mat->scfg[3]) & (~AT91_MATRIX_SLOT_CYCLE))
| AT91_MATRIX_SLOT_CYCLE_(0x40),
&mat->scfg[3]);
}
#if defined(CONFIG_BOARD_AXM)
static int at91_is_recovery(void)
{
if ((at91_get_gpio_value(AT91_PIN_PA26) == 0) &&
(at91_get_gpio_value(AT91_PIN_PA27) == 0))
return 1;
return 0;
}
#elif defined(CONFIG_BOARD_TAURUS)
static int at91_is_recovery(void)
{
if (at91_get_gpio_value(AT91_PIN_PA31) == 0)
return 1;
return 0;
}
#endif
void spl_board_init(void)
{
taurus_nand_hw_init();
at91_spi0_hw_init(TAURUS_SPI_MASK);
#if defined(CONFIG_BOARD_AXM)
/* Configure LED PINs */
at91_set_gpio_output(AT91_PIN_PA6, 0);
at91_set_gpio_output(AT91_PIN_PA8, 0);
at91_set_gpio_output(AT91_PIN_PA9, 0);
at91_set_gpio_output(AT91_PIN_PA10, 0);
at91_set_gpio_output(AT91_PIN_PA11, 0);
at91_set_gpio_output(AT91_PIN_PA12, 0);
/* Configure recovery button PINs */
at91_set_gpio_input(AT91_PIN_PA26, 1);
at91_set_gpio_input(AT91_PIN_PA27, 1);
#elif defined(CONFIG_BOARD_TAURUS)
at91_set_gpio_input(AT91_PIN_PA31, 1);
#endif
/* check for recovery mode */
if (at91_is_recovery() == 1) {
struct spi_flash *flash;
puts("Recovery button pressed\n");
nand_init();
spl_nand_erase_one(0, 0);
flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
0,
CONFIG_SF_DEFAULT_SPEED,
CONFIG_SF_DEFAULT_MODE);
if (!flash) {
puts("no flash\n");
} else {
puts("erase spi flash sector 0\n");
spi_flash_erase(flash, 0,
CONFIG_SYS_NAND_U_BOOT_SIZE);
}
}
}
#define SDRAM_BASE_CONF (AT91_SDRAMC_NR_13 | AT91_SDRAMC_CAS_3 \
|AT91_SDRAMC_NB_4 | AT91_SDRAMC_DBW_32 \
| AT91_SDRAMC_TWR_VAL(3) | AT91_SDRAMC_TRC_VAL(9) \
| AT91_SDRAMC_TRP_VAL(3) | AT91_SDRAMC_TRCD_VAL(3) \
| AT91_SDRAMC_TRAS_VAL(6) | AT91_SDRAMC_TXSR_VAL(10))
void sdramc_configure(unsigned int mask)
{
struct at91_matrix *ma = (struct at91_matrix *)ATMEL_BASE_MATRIX;
struct sdramc_reg setting;
at91_sdram_hw_init();
setting.cr = SDRAM_BASE_CONF | mask;
setting.mdr = AT91_SDRAMC_MD_SDRAM;
setting.tr = (CONFIG_SYS_MASTER_CLOCK * 7) / 1000000;
writel(readl(&ma->ebicsa) | AT91_MATRIX_CS1A_SDRAMC |
AT91_MATRIX_VDDIOMSEL_3_3V | AT91_MATRIX_EBI_IOSR_SEL,
&ma->ebicsa);
sdramc_initialize(ATMEL_BASE_CS1, &setting);
}
void mem_init(void)
{
unsigned int ram_size = 0;
/* Configure SDRAM for 128MB */
sdramc_configure(AT91_SDRAMC_NC_10);
/* Do memtest for 128MB */
ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
CONFIG_SYS_SDRAM_SIZE);
/*
* If 32MB or 16MB should be supported check also for
* expected mirroring at A16 and A17
* To find mirror addresses depends how the collumns are connected
* at RAM (internaly or externaly)
* If the collumns are not in inverted order the mirror size effect
* behaves like normal SRAM with A0,A1,A2,etc. connected incremantal
*/
/* Mirrors at A15 on ATMEL G20 SDRAM Controller with 64MB*/
if (ram_size == 0x800) {
printf("\n\r 64MB");
sdramc_configure(AT91_SDRAMC_NC_9);
} else {
/* Size already initialized */
printf("\n\r 128MB");
}
}
#endif
#ifdef CONFIG_MACB
static void siemens_phy_reset(void)
{
/*
* we need to reset PHY for 200us
* because of bug in ATMEL G20 CPU (undefined initial state of GPIO)
*/
if ((readl(AT91_ASM_RSTC_SR) & AT91_RSTC_RSTTYP) ==
AT91_RSTC_RSTTYP_GENERAL)
at91_set_gpio_value(AT91_PIN_PA25, 0); /* reset eth switch */
}
static void taurus_macb_hw_init(void)
{
/* Enable EMAC clock */
at91_periph_clk_enable(ATMEL_ID_EMAC0);
/*
* Disable pull-up on:
* RXDV (PA17) => PHY normal mode (not Test mode)
* ERX0 (PA14) => PHY ADDR0
* ERX1 (PA15) => PHY ADDR1
* ERX2 (PA25) => PHY ADDR2
* ERX3 (PA26) => PHY ADDR3
* ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
*
* PHY has internal pull-down
*/
at91_set_pio_pullup(AT91_PIO_PORTA, 14, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 17, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 25, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 26, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 28, 0);
siemens_phy_reset();
at91_phy_reset();
at91_set_gpio_input(AT91_PIN_PA25, 1); /* ERST tri-state */
/* Re-enable pull-up */
at91_set_pio_pullup(AT91_PIO_PORTA, 14, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 17, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 25, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 26, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 28, 1);
/* Initialize EMAC=MACB hardware */
at91_macb_hw_init();
}
#endif
#ifdef CONFIG_GENERIC_ATMEL_MCI
int board_mmc_init(bd_t *bd)
{
at91_mci_hw_init();
return atmel_mci_init((void *)ATMEL_BASE_MCI);
}
#endif
int board_early_init_f(void)
{
/* Enable clocks for all PIOs */
at91_periph_clk_enable(ATMEL_ID_PIOA);
at91_periph_clk_enable(ATMEL_ID_PIOB);
at91_periph_clk_enable(ATMEL_ID_PIOC);
at91_seriald_hw_init();
taurus_request_gpio();
return 0;
}
/* FIXME gpio code here need to handle through DM_GPIO */
#ifndef CONFIG_DM_SPI
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
{
return bus == 0 && cs == 0;
}
void spi_cs_activate(struct spi_slave *slave)
{
at91_set_gpio_value(TAURUS_SPI_CS_PIN, 0);
}
void spi_cs_deactivate(struct spi_slave *slave)
{
at91_set_gpio_value(TAURUS_SPI_CS_PIN, 1);
}
#endif
#ifdef CONFIG_USB_GADGET_AT91
#include <linux/usb/at91_udc.h>
void at91_udp_hw_init(void)
{
/* Enable PLLB */
at91_pllb_clk_enable(get_pllb_init());
/* Enable UDPCK clock, MCK is enabled in at91_clock_init() */
at91_periph_clk_enable(ATMEL_ID_UDP);
at91_system_clk_enable(AT91SAM926x_PMC_UDP);
}
struct at91_udc_data board_udc_data = {
.baseaddr = ATMEL_BASE_UDP0,
};
#endif
int board_init(void)
{
/* adress of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
taurus_request_gpio();
#ifdef CONFIG_CMD_NAND
taurus_nand_hw_init();
#endif
#ifdef CONFIG_MACB
taurus_macb_hw_init();
#endif
at91_spi0_hw_init(TAURUS_SPI_MASK);
#ifdef CONFIG_USB_GADGET_AT91
at91_udp_hw_init();
at91_udc_probe(&board_udc_data);
#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_EMAC0, 0x00);
#endif
return rc;
}
#endif
#if !defined(CONFIG_SPL_BUILD)
#if defined(CONFIG_BOARD_AXM)
/*
* Booting the Fallback Image.
*
* The function is used to provide and
* boot the image with the fallback
* parameters, incase if the faulty image
* in upgraded over the base firmware.
*
*/
static int upgrade_failure_fallback(void)
{
char *partitionset_active = NULL;
char *rootfs = NULL;
char *rootfs_fallback = NULL;
char *kern_off;
char *kern_off_fb;
char *kern_size;
char *kern_size_fb;
partitionset_active = env_get("partitionset_active");
if (partitionset_active) {
if (partitionset_active[0] == 'A')
env_set("partitionset_active", "B");
else
env_set("partitionset_active", "A");
} else {
printf("partitionset_active missing.\n");
return -ENOENT;
}
rootfs = env_get("rootfs");
rootfs_fallback = env_get("rootfs_fallback");
env_set("rootfs", rootfs_fallback);
env_set("rootfs_fallback", rootfs);
kern_size = env_get("kernel_size");
kern_size_fb = env_get("kernel_size_fallback");
env_set("kernel_size", kern_size_fb);
env_set("kernel_size_fallback", kern_size);
kern_off = env_get("kernel_Off");
kern_off_fb = env_get("kernel_Off_fallback");
env_set("kernel_Off", kern_off_fb);
env_set("kernel_Off_fallback", kern_off);
env_set("bootargs", '\0');
env_set("upgrade_available", '\0');
env_set("boot_retries", '\0');
env_save();
return 0;
}
static int do_upgrade_available(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
unsigned long upgrade_available = 0;
unsigned long boot_retry = 0;
char boot_buf[10];
upgrade_available = simple_strtoul(env_get("upgrade_available"), NULL,
10);
if (upgrade_available) {
boot_retry = simple_strtoul(env_get("boot_retries"), NULL, 10);
boot_retry++;
sprintf(boot_buf, "%lx", boot_retry);
env_set("boot_retries", boot_buf);
env_save();
/*
* Here the boot_retries count is checked, and if the
* count becomes greater than 2 switch back to the
* fallback, and reset the board.
*/
if (boot_retry > 2) {
if (upgrade_failure_fallback() == 0)
do_reset(NULL, 0, 0, NULL);
return -1;
}
}
return 0;
}
U_BOOT_CMD(
upgrade_available, 1, 1, do_upgrade_available,
"check Siemens update",
"no parameters"
);
#endif
#endif
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