bootblock.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <assert.h>
#include <arch/exception.h>
#include <arch/stages.h>
#include <bootblock_common.h>
#include <console/console.h>
#include <program_loading.h>
#include <soc/clock.h>
#include <soc/nvidia/tegra/apbmisc.h>
#include <soc/pinmux.h>
#include <soc/power.h>
#include <timestamp.h>
#include <vendorcode/google/chromeos/chromeos.h>
 
/* called from assembly in bootblock_asm.S */
void tegra124_main(void);
 
static void run_next_stage(void *entry)
{
        ASSERT(entry);
        clock_cpu0_config(entry);
 
        power_enable_and_ungate_cpu();
 
        /* Repair RAM on cluster0 and cluster1 after CPU is powered on. */
        ram_repair();
 
        clock_cpu0_remove_reset();
 
        clock_halt_avp();
}
 
void tegra124_main(void)
{
        // enable pinmux clamp inputs
        clamp_tristate_inputs();
 
        // enable JTAG at the earliest stage
        enable_jtag();
 
        clock_early_uart();
 
        // Serial out, tristate off.
        pinmux_set_config(PINMUX_KB_ROW9_INDEX, PINMUX_KB_ROW9_FUNC_UA3);
        // Serial in, tristate_on.
        pinmux_set_config(PINMUX_KB_ROW10_INDEX, PINMUX_KB_ROW10_FUNC_UA3 |
                                                 PINMUX_PULL_UP |
                                                 PINMUX_INPUT_ENABLE);
        // Mux some pins away from uart A.
        pinmux_set_config(PINMUX_UART2_CTS_N_INDEX,
                          PINMUX_UART2_CTS_N_FUNC_UB3 |
                          PINMUX_INPUT_ENABLE);
        pinmux_set_config(PINMUX_UART2_RTS_N_INDEX,
                          PINMUX_UART2_RTS_N_FUNC_UB3);
 
        if (CONFIG(BOOTBLOCK_CONSOLE)) {
                console_init();
                exception_init();
        }
 
        clock_init();
 
        bootblock_mainboard_init();
 
        pinmux_set_config(PINMUX_CORE_PWR_REQ_INDEX,
                          PINMUX_CORE_PWR_REQ_FUNC_PWRON);
        pinmux_set_config(PINMUX_CPU_PWR_REQ_INDEX,
                          PINMUX_CPU_PWR_REQ_FUNC_CPU);
        pinmux_set_config(PINMUX_PWR_INT_N_INDEX,
                          PINMUX_PWR_INT_N_FUNC_PMICINTR |
                          PINMUX_INPUT_ENABLE);
 
        timestamp_init(0);
 
        run_romstage();
}
 
void platform_prog_run(struct prog *prog)
{
        run_next_stage(prog_entry(prog));
}