/* * Copyright (C) 2018 Marvell International Ltd. * * SPDX-License-Identifier: BSD-3-Clause * https://spdx.org/licenses */ #include #include #include #include #include #include /* This routine does MPP initialization */ static void marvell_bl31_mpp_init(void) { mmio_clrbits_32(MVEBU_NB_GPIO_SEL_REG, 1 << MVEBU_GPIO_TW1_GPIO_EN_OFF); /* Set hidden GPIO setting for SPI. * In north_bridge_pin_out_en_high register 13804, * bit 28 is the one which enables CS, CLK pins to be * output, need to set it to 1. * The initial value of this bit is 1, but in UART boot mode * initialization, this bit is disabled and the SPI CS and CLK pins * are used for downloading image purpose; so after downloading, * we should set this bit to 1 again to enable SPI CS and CLK pins. * And anyway, this bit value should be 1 in all modes, * so here we does not judge boot mode and set this bit to 1 always. */ mmio_setbits_32(MVEBU_NB_GPIO_OUTPUT_EN_HIGH_REG, 1 << MVEBU_GPIO_NB_SPI_PIN_MODE_OFF); } /* This function overruns the same function in marvell_bl31_setup.c */ void bl31_plat_arch_setup(void) { struct dec_win_config *io_dec_map; uint32_t dec_win_num; struct dram_win_map dram_wins_map; marvell_bl31_plat_arch_setup(); /* MPP init */ marvell_bl31_mpp_init(); /* initialize the timer for delay functionality */ plat_delay_timer_init(); /* CPU address decoder windows initialization. */ cpu_wins_init(); /* fetch CPU-DRAM window mapping information by reading * CPU-DRAM decode windows (only the enabled ones) */ dram_win_map_build(&dram_wins_map); /* Get IO address decoder windows */ if (marvell_get_io_dec_win_conf(&io_dec_map, &dec_win_num)) { printf("No IO address decoder windows configurations found!\n"); return; } /* IO address decoder init */ if (init_io_addr_dec(&dram_wins_map, io_dec_map, dec_win_num)) { printf("IO address decoder windows initialization failed!\n"); return; } }