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u-boot/board/beckhoff/mx53cx9020/mx53cx9020.c
Tom Rini 9774462e34 arm: Disable ATAGs support 
With the exceptions of ds109, ds414, icnova-a20-swac, nokia_rx51 and
stemmy, disable ATAG support.  A large number of platforms had enabled
support but never supported a kernel so old as to require it.  Further,
some platforms are old enough to support both, but are well supported by
devicetree booting, and have been for a number of years.  This is
because some of the ATAGs related functions have been re-used to provide
the same kind of information, but for devicetree or just generally to
inform the user.  When needed still, rename these functions to
get_board_revision() instead, to avoid conflicts.  In other cases, these
functions were simply unused, so drop them.

Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Phil Sutter <phil@nwl.cc>
Cc: Stefan Bosch <stefan_b@posteo.net>
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-09-07 16:22:30 -04:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015 Beckhoff Automation GmbH & Co. KG
* Patrick Bruenn <p.bruenn@beckhoff.com>
*
* Based on <u-boot>/board/freescale/mx53loco/mx53loco.c
* Copyright (C) 2011 Freescale Semiconductor, Inc.
*/
#include <common.h>
#include <cpu_func.h>
#include <init.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/clock.h>
#include <asm/arch/iomux-mx53.h>
#include <asm/global_data.h>
#include <asm/mach-imx/mx5_video.h>
#include <ACEX1K.h>
#include <asm/gpio.h>
#include <linux/delay.h>
enum LED_GPIOS {
GPIO_SD1_CD = IMX_GPIO_NR(1, 1),
GPIO_SD2_CD = IMX_GPIO_NR(1, 4),
GPIO_LED_SD2_R = IMX_GPIO_NR(3, 16),
GPIO_LED_SD2_B = IMX_GPIO_NR(3, 17),
GPIO_LED_SD2_G = IMX_GPIO_NR(3, 18),
GPIO_LED_SD1_R = IMX_GPIO_NR(3, 19),
GPIO_LED_SD1_B = IMX_GPIO_NR(3, 20),
GPIO_LED_SD1_G = IMX_GPIO_NR(3, 21),
GPIO_LED_PWR_R = IMX_GPIO_NR(3, 22),
GPIO_LED_PWR_B = IMX_GPIO_NR(3, 23),
GPIO_LED_PWR_G = IMX_GPIO_NR(3, 24),
GPIO_SUPS_INT = IMX_GPIO_NR(3, 31),
GPIO_C3_CONFIG = IMX_GPIO_NR(6, 8),
GPIO_C3_STATUS = IMX_GPIO_NR(6, 7),
GPIO_C3_DONE = IMX_GPIO_NR(6, 9),
};
#define CCAT_BASE_ADDR ((void *)0xf0000000)
#define CCAT_END_ADDR (CCAT_BASE_ADDR + (1024 * 1024 * 32))
#define CCAT_SIZE 1191788
#define CCAT_SIGN_ADDR (CCAT_BASE_ADDR + 12)
static const char CCAT_SIGNATURE[] = "CCAT";
static const u32 CCAT_MODE_CONFIG = 0x0024DC81;
static const u32 CCAT_MODE_RUN = 0x0033DC8F;
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_REVISION_TAG
u32 get_board_rev(void)
{
struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
struct fuse_bank *bank = &iim->bank[0];
struct fuse_bank0_regs *fuse =
(struct fuse_bank0_regs *)bank->fuse_regs;
int rev = readl(&fuse->gp[6]);
return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
}
#endif
/*
* Set CCAT mode
* @mode: use CCAT_MODE_CONFIG or CCAT_MODE_RUN
*/
void weim_cs0_settings(u32 mode)
{
struct weim *weim_regs = (struct weim *)WEIM_BASE_ADDR;
writel(0x0, &weim_regs->cs0gcr1);
writel(mode, &weim_regs->cs0gcr1);
writel(0x00001002, &weim_regs->cs0gcr2);
writel(0x04000000, &weim_regs->cs0rcr1);
writel(0x00000000, &weim_regs->cs0rcr2);
writel(0x04000000, &weim_regs->cs0wcr1);
writel(0x00000000, &weim_regs->cs0wcr2);
}
static void setup_gpio_eim(void)
{
gpio_request(GPIO_C3_STATUS, "GPIO_C3_STATUS");
gpio_request(GPIO_C3_DONE, "GPIO_C3_DONE");
gpio_request(GPIO_C3_CONFIG, "GPIO_C3_CONFIG");
gpio_direction_input(GPIO_C3_STATUS);
gpio_direction_input(GPIO_C3_DONE);
gpio_direction_output(GPIO_C3_CONFIG, 1);
weim_cs0_settings(CCAT_MODE_RUN);
}
static void setup_gpio_sups(void)
{
gpio_request(GPIO_SUPS_INT, "GPIO_SUPS_INT");
gpio_direction_input(GPIO_SUPS_INT);
static const int BLINK_INTERVALL = 50000;
int status = 1;
while (gpio_get_value(GPIO_SUPS_INT)) {
/* signal "CX SUPS power fail" */
gpio_set_value(GPIO_LED_PWR_R,
(++status / BLINK_INTERVALL) % 2);
}
/* signal "CX power up" */
gpio_set_value(GPIO_LED_PWR_R, 1);
}
static void setup_gpio_leds(void)
{
gpio_request(GPIO_LED_SD2_R, "GPIO_LED_SD2_R");
gpio_request(GPIO_LED_SD2_B, "GPIO_LED_SD2_B");
gpio_request(GPIO_LED_SD2_G, "GPIO_LED_SD2_G");
gpio_request(GPIO_LED_SD1_R, "GPIO_LED_SD1_R");
gpio_request(GPIO_LED_SD1_B, "GPIO_LED_SD1_B");
gpio_request(GPIO_LED_SD1_G, "GPIO_LED_SD1_G");
gpio_request(GPIO_LED_PWR_R, "GPIO_LED_PWR_R");
gpio_request(GPIO_LED_PWR_B, "GPIO_LED_PWR_B");
gpio_request(GPIO_LED_PWR_G, "GPIO_LED_PWR_G");
gpio_direction_output(GPIO_LED_SD2_R, 0);
gpio_direction_output(GPIO_LED_SD2_B, 0);
gpio_direction_output(GPIO_LED_SD2_G, 0);
gpio_direction_output(GPIO_LED_SD1_R, 0);
gpio_direction_output(GPIO_LED_SD1_B, 0);
gpio_direction_output(GPIO_LED_SD1_G, 0);
gpio_direction_output(GPIO_LED_PWR_R, 0);
gpio_direction_output(GPIO_LED_PWR_B, 0);
gpio_direction_output(GPIO_LED_PWR_G, 0);
}
static int power_init(void)
{
/* nothing to do on CX9020 */
return 0;
}
static void clock_1GHz(void)
{
int ret;
u32 ref_clk = MXC_HCLK;
/*
* After increasing voltage to 1.25V, we can switch
* CPU clock to 1GHz and DDR to 400MHz safely
*/
ret = mxc_set_clock(ref_clk, 1000, MXC_ARM_CLK);
if (ret)
printf("CPU: Switch CPU clock to 1GHZ failed\n");
ret = mxc_set_clock(ref_clk, 400, MXC_PERIPH_CLK);
ret |= mxc_set_clock(ref_clk, 400, MXC_DDR_CLK);
if (ret)
printf("CPU: Switch DDR clock to 400MHz failed\n");
}
int board_early_init_f(void)
{
return 0;
}
int board_init(void)
{
gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
mxc_set_sata_internal_clock();
setup_gpio_leds();
setup_gpio_sups();
setup_gpio_eim();
setup_iomux_lcd();
return 0;
}
int checkboard(void)
{
puts("Board: Beckhoff CX9020\n");
return 0;
}
static int ccat_config_fn(int assert_config, int flush, int cookie)
{
/* prepare FPGA for programming */
weim_cs0_settings(CCAT_MODE_CONFIG);
gpio_set_value(GPIO_C3_CONFIG, 0);
udelay(1);
gpio_set_value(GPIO_C3_CONFIG, 1);
udelay(230);
return FPGA_SUCCESS;
}
static int ccat_status_fn(int cookie)
{
return FPGA_FAIL;
}
static int ccat_write_fn(const void *buf, size_t buf_len, int flush, int cookie)
{
const uint8_t *const buffer = buf;
/* program CCAT */
int i;
for (i = 0; i < buf_len; ++i)
writeb(buffer[i], CCAT_BASE_ADDR);
writeb(0xff, CCAT_BASE_ADDR);
writeb(0xff, CCAT_BASE_ADDR);
return FPGA_SUCCESS;
}
static int ccat_done_fn(int cookie)
{
/* programming complete? */
return gpio_get_value(GPIO_C3_DONE);
}
static int ccat_post_fn(int cookie)
{
/* switch to FPGA run mode */
weim_cs0_settings(CCAT_MODE_RUN);
invalidate_dcache_range((ulong) CCAT_BASE_ADDR, (ulong) CCAT_END_ADDR);
if (memcmp(CCAT_SIGN_ADDR, CCAT_SIGNATURE, sizeof(CCAT_SIGNATURE))) {
printf("Verifing CCAT firmware failed, signature not found\n");
return FPGA_FAIL;
}
/* signal "CX booting OS" */
gpio_set_value(GPIO_LED_PWR_R, 1);
gpio_set_value(GPIO_LED_PWR_G, 1);
gpio_set_value(GPIO_LED_PWR_B, 0);
return FPGA_SUCCESS;
}
static Altera_CYC2_Passive_Serial_fns ccat_fns = {
.config = ccat_config_fn,
.status = ccat_status_fn,
.done = ccat_done_fn,
.write = ccat_write_fn,
.abort = ccat_post_fn,
.post = ccat_post_fn,
};
static Altera_desc ccat_fpga = {
.family = Altera_CYC2,
.iface = passive_serial,
.size = CCAT_SIZE,
.iface_fns = &ccat_fns,
.base = CCAT_BASE_ADDR,
};
int board_late_init(void)
{
if (!power_init())
clock_1GHz();
fpga_init();
fpga_add(fpga_altera, &ccat_fpga);
return 0;
}
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