blob: 408198843fd51338f18d6a9457511af389188bbb [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2019 Toradex
*/
#include <common.h>
#include <cpu_func.h>
#include <init.h>
#include <asm/global_data.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx8-pins.h>
#include <asm/arch/iomux.h>
#include <asm/arch/sci/sci.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <env.h>
#include <errno.h>
#include <linux/libfdt.h>
#include <linux/bitops.h>
#include "../common/tdx-cfg-block.h"
DECLARE_GLOBAL_DATA_PTR;
#define UART_PAD_CTRL ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
(SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
(SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
(SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
#define TDX_USER_FUSE_BLOCK1_A 276
#define TDX_USER_FUSE_BLOCK1_B 277
#define TDX_USER_FUSE_BLOCK2_A 278
#define TDX_USER_FUSE_BLOCK2_B 279
static iomux_cfg_t uart1_pads[] = {
SC_P_UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
SC_P_UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
};
struct tdx_user_fuses {
u16 pid4;
u16 vers;
u8 ramid;
};
static void setup_iomux_uart(void)
{
imx8_iomux_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}
static uint32_t do_get_tdx_user_fuse(int a, int b)
{
sc_err_t sciErr;
u32 val_a = 0;
u32 val_b = 0;
sciErr = sc_misc_otp_fuse_read(-1, a, &val_a);
if (sciErr != SC_ERR_NONE) {
printf("Error reading out user fuse %d\n", a);
return 0;
}
sciErr = sc_misc_otp_fuse_read(-1, b, &val_b);
if (sciErr != SC_ERR_NONE) {
printf("Error reading out user fuse %d\n", b);
return 0;
}
return ((val_a & 0xffff) << 16) | (val_b & 0xffff);
}
static void get_tdx_user_fuse(struct tdx_user_fuses *tdxuserfuse)
{
u32 fuse_block;
fuse_block = do_get_tdx_user_fuse(TDX_USER_FUSE_BLOCK2_A,
TDX_USER_FUSE_BLOCK2_B);
/*
* Fuse block 2 acts as a backup area, if this reads 0 we want to
* use fuse block 1
*/
if (fuse_block == 0)
fuse_block = do_get_tdx_user_fuse(TDX_USER_FUSE_BLOCK1_A,
TDX_USER_FUSE_BLOCK1_B);
tdxuserfuse->pid4 = (fuse_block >> 18) & GENMASK(13, 0);
tdxuserfuse->vers = (fuse_block >> 4) & GENMASK(13, 0);
tdxuserfuse->ramid = fuse_block & GENMASK(3, 0);
}
void board_mem_get_layout(u64 *phys_sdram_1_start,
u64 *phys_sdram_1_size,
u64 *phys_sdram_2_start,
u64 *phys_sdram_2_size)
{
u32 is_quadplus = 0, val = 0;
struct tdx_user_fuses tdxramfuses;
sc_err_t scierr = sc_misc_otp_fuse_read(-1, 6, &val);
if (scierr == SC_ERR_NONE) {
/* QP has one A72 core disabled */
is_quadplus = ((val >> 4) & 0x3) != 0x0;
}
get_tdx_user_fuse(&tdxramfuses);
*phys_sdram_1_start = PHYS_SDRAM_1;
*phys_sdram_1_size = PHYS_SDRAM_1_SIZE;
*phys_sdram_2_start = PHYS_SDRAM_2;
switch (tdxramfuses.ramid) {
case 1:
*phys_sdram_2_size = SZ_2G;
break;
case 2:
*phys_sdram_2_size = 0x0UL;
break;
case 3:
*phys_sdram_2_size = SZ_2G;
break;
case 4:
*phys_sdram_2_size = SZ_4G + SZ_2G;
break;
default:
if (is_quadplus)
/* Our QP based SKUs only have 2 GB RAM (PHYS_SDRAM_1_SIZE) */
*phys_sdram_2_size = 0x0UL;
else
*phys_sdram_2_size = PHYS_SDRAM_2_SIZE;
break;
}
}
int board_early_init_f(void)
{
sc_pm_clock_rate_t rate = SC_80MHZ;
sc_err_t err = 0;
/* Set UART1 clock root to 80 MHz and enable it */
err = sc_pm_setup_uart(SC_R_UART_1, rate);
if (err != SC_ERR_NONE)
return 0;
setup_iomux_uart();
return 0;
}
#if CONFIG_IS_ENABLED(DM_GPIO)
static void board_gpio_init(void)
{
/* TODO */
}
#else
static inline void board_gpio_init(void) {}
#endif
#if IS_ENABLED(CONFIG_FEC_MXC)
#include <miiphy.h>
int board_phy_config(struct phy_device *phydev)
{
if (phydev->drv->config)
phydev->drv->config(phydev);
return 0;
}
#endif
int checkboard(void)
{
puts("Model: Toradex Apalis iMX8\n");
build_info();
print_bootinfo();
return 0;
}
int board_init(void)
{
board_gpio_init();
return 0;
}
/*
* Board specific reset that is system reset.
*/
void reset_cpu(void)
{
/* TODO */
}
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, struct bd_info *bd)
{
return ft_common_board_setup(blob, bd);
}
#endif
int board_mmc_get_env_dev(int devno)
{
return devno;
}
int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
/* TODO move to common */
env_set("board_name", "Apalis iMX8QM");
env_set("board_rev", "v1.0");
#endif
return 0;
}