u-boot/board/xilinx/versal/board.c
Michal Simek f66d0b5346 arm64: versal: Do not place u-boot to reserved memory location
Versal can also have reserved space in DT which u-boot has to avoid to
placing self to that location. The same change was done in ZynqMP by commit
ce39ee28ec ("zynqmp: Do not place u-boot to reserved memory location")
and also for microblaze by commit d7b5cc89d3 ("microblaze: Do not place
u-boot to reserved memory location").

The patch was tested by adding reserved-memory node to DT and check via
bdinfo back.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/15426fa6d64835dd23c5c8c12bbfc97306fb6098.1647527129.git.michal.simek@xilinx.com
2022-03-29 09:16:30 +02:00

303 lines
6.4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2014 - 2018 Xilinx, Inc.
* Michal Simek <michal.simek@xilinx.com>
*/
#include <common.h>
#include <cpu_func.h>
#include <env.h>
#include <fdtdec.h>
#include <init.h>
#include <image.h>
#include <env_internal.h>
#include <log.h>
#include <malloc.h>
#include <time.h>
#include <asm/cache.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sys_proto.h>
#include <dm/device.h>
#include <dm/uclass.h>
#include <versalpl.h>
#include "../common/board.h"
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_FPGA_VERSALPL)
static xilinx_desc versalpl = XILINX_VERSAL_DESC;
#endif
int board_init(void)
{
printf("EL Level:\tEL%d\n", current_el());
#if defined(CONFIG_FPGA_VERSALPL)
fpga_init();
fpga_add(fpga_xilinx, &versalpl);
#endif
if (CONFIG_IS_ENABLED(DM_I2C) && CONFIG_IS_ENABLED(I2C_EEPROM))
xilinx_read_eeprom();
return 0;
}
int board_early_init_r(void)
{
u32 val;
if (current_el() != 3)
return 0;
debug("iou_switch ctrl div0 %x\n",
readl(&crlapb_base->iou_switch_ctrl));
writel(IOU_SWITCH_CTRL_CLKACT_BIT |
(CONFIG_IOU_SWITCH_DIVISOR0 << IOU_SWITCH_CTRL_DIVISOR0_SHIFT),
&crlapb_base->iou_switch_ctrl);
/* Global timer init - Program time stamp reference clk */
val = readl(&crlapb_base->timestamp_ref_ctrl);
val |= CRL_APB_TIMESTAMP_REF_CTRL_CLKACT_BIT;
writel(val, &crlapb_base->timestamp_ref_ctrl);
debug("ref ctrl 0x%x\n",
readl(&crlapb_base->timestamp_ref_ctrl));
/* Clear reset of timestamp reg */
writel(0, &crlapb_base->rst_timestamp);
/*
* Program freq register in System counter and
* enable system counter.
*/
writel(COUNTER_FREQUENCY,
&iou_scntr_secure->base_frequency_id_register);
debug("counter val 0x%x\n",
readl(&iou_scntr_secure->base_frequency_id_register));
writel(IOU_SCNTRS_CONTROL_EN,
&iou_scntr_secure->counter_control_register);
debug("scntrs control 0x%x\n",
readl(&iou_scntr_secure->counter_control_register));
debug("timer 0x%llx\n", get_ticks());
debug("timer 0x%llx\n", get_ticks());
return 0;
}
static u8 versal_get_bootmode(void)
{
u8 bootmode;
u32 reg = 0;
reg = readl(&crp_base->boot_mode_usr);
if (reg >> BOOT_MODE_ALT_SHIFT)
reg >>= BOOT_MODE_ALT_SHIFT;
bootmode = reg & BOOT_MODES_MASK;
return bootmode;
}
int board_late_init(void)
{
u8 bootmode;
struct udevice *dev;
int bootseq = -1;
int bootseq_len = 0;
int env_targets_len = 0;
const char *mode;
char *new_targets;
char *env_targets;
if (!(gd->flags & GD_FLG_ENV_DEFAULT)) {
debug("Saved variables - Skipping\n");
return 0;
}
if (!CONFIG_IS_ENABLED(ENV_VARS_UBOOT_RUNTIME_CONFIG))
return 0;
bootmode = versal_get_bootmode();
puts("Bootmode: ");
switch (bootmode) {
case USB_MODE:
puts("USB_MODE\n");
mode = "usb_dfu0 usb_dfu1";
break;
case JTAG_MODE:
puts("JTAG_MODE\n");
mode = "jtag pxe dhcp";
break;
case QSPI_MODE_24BIT:
puts("QSPI_MODE_24\n");
mode = "xspi0";
break;
case QSPI_MODE_32BIT:
puts("QSPI_MODE_32\n");
mode = "xspi0";
break;
case OSPI_MODE:
puts("OSPI_MODE\n");
mode = "xspi0";
break;
case EMMC_MODE:
puts("EMMC_MODE\n");
if (uclass_get_device_by_name(UCLASS_MMC,
"mmc@f1050000", &dev) &&
uclass_get_device_by_name(UCLASS_MMC,
"sdhci@f1050000", &dev)) {
puts("Boot from EMMC but without SD1 enabled!\n");
return -1;
}
debug("mmc1 device found at %p, seq %d\n", dev, dev_seq(dev));
mode = "mmc";
bootseq = dev_seq(dev);
break;
case SD_MODE:
puts("SD_MODE\n");
if (uclass_get_device_by_name(UCLASS_MMC,
"mmc@f1040000", &dev) &&
uclass_get_device_by_name(UCLASS_MMC,
"sdhci@f1040000", &dev)) {
puts("Boot from SD0 but without SD0 enabled!\n");
return -1;
}
debug("mmc0 device found at %p, seq %d\n", dev, dev_seq(dev));
mode = "mmc";
bootseq = dev_seq(dev);
break;
case SD1_LSHFT_MODE:
puts("LVL_SHFT_");
/* fall through */
case SD_MODE1:
puts("SD_MODE1\n");
if (uclass_get_device_by_name(UCLASS_MMC,
"mmc@f1050000", &dev) &&
uclass_get_device_by_name(UCLASS_MMC,
"sdhci@f1050000", &dev)) {
puts("Boot from SD1 but without SD1 enabled!\n");
return -1;
}
debug("mmc1 device found at %p, seq %d\n", dev, dev_seq(dev));
mode = "mmc";
bootseq = dev_seq(dev);
break;
default:
mode = "";
printf("Invalid Boot Mode:0x%x\n", bootmode);
break;
}
if (bootseq >= 0) {
bootseq_len = snprintf(NULL, 0, "%i", bootseq);
debug("Bootseq len: %x\n", bootseq_len);
}
/*
* One terminating char + one byte for space between mode
* and default boot_targets
*/
env_targets = env_get("boot_targets");
if (env_targets)
env_targets_len = strlen(env_targets);
new_targets = calloc(1, strlen(mode) + env_targets_len + 2 +
bootseq_len);
if (!new_targets)
return -ENOMEM;
if (bootseq >= 0)
sprintf(new_targets, "%s%x %s", mode, bootseq,
env_targets ? env_targets : "");
else
sprintf(new_targets, "%s %s", mode,
env_targets ? env_targets : "");
env_set("boot_targets", new_targets);
return board_late_init_xilinx();
}
int dram_init_banksize(void)
{
int ret;
ret = fdtdec_setup_memory_banksize();
if (ret)
return ret;
mem_map_fill();
return 0;
}
int dram_init(void)
{
if (fdtdec_setup_mem_size_base_lowest() != 0)
return -EINVAL;
return 0;
}
ulong board_get_usable_ram_top(ulong total_size)
{
phys_size_t size;
phys_addr_t reg;
struct lmb lmb;
/* found enough not-reserved memory to relocated U-Boot */
lmb_init(&lmb);
lmb_add(&lmb, gd->ram_base, gd->ram_size);
boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
size = ALIGN(CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE);
reg = lmb_alloc(&lmb, size, MMU_SECTION_SIZE);
if (!reg)
reg = gd->ram_top - size;
return reg + size;
}
void reset_cpu(void)
{
}
enum env_location env_get_location(enum env_operation op, int prio)
{
u32 bootmode = versal_get_bootmode();
if (prio)
return ENVL_UNKNOWN;
switch (bootmode) {
case EMMC_MODE:
case SD_MODE:
case SD1_LSHFT_MODE:
case SD_MODE1:
if (IS_ENABLED(CONFIG_ENV_IS_IN_FAT))
return ENVL_FAT;
if (IS_ENABLED(CONFIG_ENV_IS_IN_EXT4))
return ENVL_EXT4;
return ENVL_NOWHERE;
case OSPI_MODE:
case QSPI_MODE_24BIT:
case QSPI_MODE_32BIT:
if (IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH))
return ENVL_SPI_FLASH;
return ENVL_NOWHERE;
case JTAG_MODE:
default:
return ENVL_NOWHERE;
}
}