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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010-2015
* NVIDIA Corporation <www.nvidia.com>
*/
#include <common.h>
#include <cpu_func.h>
#include <dm.h>
#include <init.h>
#include <ns16550.h>
#include <spl.h>
#include <asm/cache.h>
#include <asm/io.h>
#if IS_ENABLED(CONFIG_TEGRA_CLKRST)
#include <asm/arch/clock.h>
#endif
#if IS_ENABLED(CONFIG_TEGRA_PINCTRL)
#include <asm/arch/funcmux.h>
#endif
#if IS_ENABLED(CONFIG_TEGRA_MC)
#include <asm/arch/mc.h>
#endif
#include <asm/arch/tegra.h>
#include <asm/arch-tegra/ap.h>
#include <asm/arch-tegra/board.h>
#include <asm/arch-tegra/cboot.h>
#include <asm/arch-tegra/pmc.h>
#include <asm/arch-tegra/sys_proto.h>
#include <asm/arch-tegra/warmboot.h>
void save_boot_params_ret(void);
DECLARE_GLOBAL_DATA_PTR;
enum {
/* UARTs which we can enable */
UARTA = 1 << 0,
UARTB = 1 << 1,
UARTC = 1 << 2,
UARTD = 1 << 3,
UARTE = 1 << 4,
UART_COUNT = 5,
};
static bool from_spl __attribute__ ((section(".data")));
#ifndef CONFIG_SPL_BUILD
void save_boot_params(unsigned long r0, unsigned long r1, unsigned long r2,
unsigned long r3)
{
from_spl = r0 != UBOOT_NOT_LOADED_FROM_SPL;
/*
* The logic for this is somewhat indirect. The purpose of the marker
* (UBOOT_NOT_LOADED_FROM_SPL) is in fact used to determine if U-Boot
* was loaded from a read-only instance of itself, which is something
* that can happen in secure boot setups. So basically the presence
* of the marker is an indication that U-Boot was loaded by one such
* special variant of U-Boot. Conversely, the absence of the marker
* indicates that this instance of U-Boot was loaded by something
* other than a special U-Boot. This could be SPL, but it could just
* as well be one of any number of other first stage bootloaders.
*/
if (from_spl)
cboot_save_boot_params(r0, r1, r2, r3);
save_boot_params_ret();
}
#endif
bool spl_was_boot_source(void)
{
return from_spl;
}
#if defined(CONFIG_TEGRA_SUPPORT_NON_SECURE)
#if !defined(CONFIG_TEGRA124)
#error tegra_cpu_is_non_secure has only been validated on Tegra124
#endif
bool tegra_cpu_is_non_secure(void)
{
/*
* This register reads 0xffffffff in non-secure mode. This register
* only implements bits 31:20, so the lower bits will always read 0 in
* secure mode. Thus, the lower bits are an indicator for secure vs.
* non-secure mode.
*/
struct mc_ctlr *mc = (struct mc_ctlr *)NV_PA_MC_BASE;
uint32_t mc_s_cfg0 = readl(&mc->mc_security_cfg0);
return (mc_s_cfg0 & 1) == 1;
}
#endif
#if IS_ENABLED(CONFIG_TEGRA_MC)
/* Read the RAM size directly from the memory controller */
static phys_size_t query_sdram_size(void)
{
struct mc_ctlr *const mc = (struct mc_ctlr *)NV_PA_MC_BASE;
u32 emem_cfg;
phys_size_t size_bytes;
emem_cfg = readl(&mc->mc_emem_cfg);
#if defined(CONFIG_TEGRA20)
debug("mc->mc_emem_cfg (MEM_SIZE_KB) = 0x%08x\n", emem_cfg);
size_bytes = get_ram_size((void *)PHYS_SDRAM_1, emem_cfg * 1024);
#else
debug("mc->mc_emem_cfg (MEM_SIZE_MB) = 0x%08x\n", emem_cfg);
#ifndef CONFIG_PHYS_64BIT
/*
* If >=4GB RAM is present, the byte RAM size won't fit into 32-bits
* and will wrap. Clip the reported size to the maximum that a 32-bit
* variable can represent (rounded to a page).
*/
if (emem_cfg >= 4096) {
size_bytes = U32_MAX & ~(0x1000 - 1);
} else
#endif
{
/* RAM size EMC is programmed to. */
size_bytes = (phys_size_t)emem_cfg * 1024 * 1024;
#ifndef CONFIG_ARM64
/*
* If all RAM fits within 32-bits, it can be accessed without
* LPAE, so go test the RAM size. Otherwise, we can't access
* all the RAM, and get_ram_size() would get confused, so
* avoid using it. There's no reason we should need this
* validation step anyway.
*/
if (emem_cfg <= (0 - PHYS_SDRAM_1) / (1024 * 1024))
size_bytes = get_ram_size((void *)PHYS_SDRAM_1,
size_bytes);
#endif
}
#endif
#if defined(CONFIG_TEGRA30) || defined(CONFIG_TEGRA114)
/* External memory limited to 2047 MB due to IROM/HI-VEC */
if (size_bytes == SZ_2G)
size_bytes -= SZ_1M;
#endif
return size_bytes;
}
#endif
int dram_init(void)
{
int err;
/* try to initialize DRAM from cboot DTB first */
err = cboot_dram_init();
if (err == 0)
return 0;
#if IS_ENABLED(CONFIG_TEGRA_MC)
/* We do not initialise DRAM here. We just query the size */
gd->ram_size = query_sdram_size();
#endif
return 0;
}
#if IS_ENABLED(CONFIG_TEGRA_PINCTRL)
static int uart_configs[] = {
#if defined(CONFIG_TEGRA20)
#if defined(CONFIG_TEGRA_UARTA_UAA_UAB)
FUNCMUX_UART1_UAA_UAB,
#elif defined(CONFIG_TEGRA_UARTA_GPU)
FUNCMUX_UART1_GPU,
#elif defined(CONFIG_TEGRA_UARTA_SDIO1)
FUNCMUX_UART1_SDIO1,
#else
FUNCMUX_UART1_IRRX_IRTX,
#endif
FUNCMUX_UART2_UAD,
-1,
FUNCMUX_UART4_GMC,
-1,
#elif defined(CONFIG_TEGRA30)
FUNCMUX_UART1_ULPI, /* UARTA */
-1,
-1,
-1,
-1,
#elif defined(CONFIG_TEGRA114)
-1,
-1,
-1,
FUNCMUX_UART4_GMI, /* UARTD */
-1,
#elif defined(CONFIG_TEGRA124)
FUNCMUX_UART1_KBC, /* UARTA */
-1,
-1,
FUNCMUX_UART4_GPIO, /* UARTD */
-1,
#else /* Tegra210 */
FUNCMUX_UART1_UART1, /* UARTA */
-1,
-1,
FUNCMUX_UART4_UART4, /* UARTD */
-1,
#endif
};
/**
* Set up the specified uarts
*
* @param uarts_ids Mask containing UARTs to init (UARTx)
*/
static void setup_uarts(int uart_ids)
{
static enum periph_id id_for_uart[] = {
PERIPH_ID_UART1,
PERIPH_ID_UART2,
PERIPH_ID_UART3,
PERIPH_ID_UART4,
PERIPH_ID_UART5,
};
size_t i;
for (i = 0; i < UART_COUNT; i++) {
if (uart_ids & (1 << i)) {
enum periph_id id = id_for_uart[i];
funcmux_select(id, uart_configs[i]);
clock_ll_start_uart(id);
}
}
}
#endif
void board_init_uart_f(void)
{
#if IS_ENABLED(CONFIG_TEGRA_PINCTRL)
int uart_ids = 0; /* bit mask of which UART ids to enable */
#ifdef CONFIG_TEGRA_ENABLE_UARTA
uart_ids |= UARTA;
#endif
#ifdef CONFIG_TEGRA_ENABLE_UARTB
uart_ids |= UARTB;
#endif
#ifdef CONFIG_TEGRA_ENABLE_UARTC
uart_ids |= UARTC;
#endif
#ifdef CONFIG_TEGRA_ENABLE_UARTD
uart_ids |= UARTD;
#endif
#ifdef CONFIG_TEGRA_ENABLE_UARTE
uart_ids |= UARTE;
#endif
setup_uarts(uart_ids);
#endif
}
#if !CONFIG_IS_ENABLED(OF_CONTROL)
static struct ns16550_platdata ns16550_com1_pdata = {
.base = CONFIG_SYS_NS16550_COM1,
.reg_shift = 2,
.clock = CONFIG_SYS_NS16550_CLK,
.fcr = UART_FCR_DEFVAL,
};
U_BOOT_DEVICE(ns16550_com1) = {
"ns16550_serial", &ns16550_com1_pdata
};
#endif
#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) && !defined(CONFIG_ARM64)
void enable_caches(void)
{
/* Enable D-cache. I-cache is already enabled in start.S */
dcache_enable();
}
#endif
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