diff options
Diffstat (limited to 'sys/arm/nvidia/tegra124/tegra124_machdep.c')
| -rw-r--r-- | sys/arm/nvidia/tegra124/tegra124_machdep.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/sys/arm/nvidia/tegra124/tegra124_machdep.c b/sys/arm/nvidia/tegra124/tegra124_machdep.c new file mode 100644 index 0000000..e74a05b --- /dev/null +++ b/sys/arm/nvidia/tegra124/tegra124_machdep.c @@ -0,0 +1,173 @@ +/*- + * Copyright (c) 2016 Michal Meloun <mmel@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#define _ARM32_BUS_DMA_PRIVATE +#include "opt_platform.h" + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/reboot.h> + +#include <vm/vm.h> + +#include <machine/bus.h> +#include <machine/devmap.h> +#include <machine/fdt.h> +#include <machine/intr.h> +#include <machine/machdep.h> +#include <machine/platformvar.h> + +#include <dev/fdt/fdt_common.h> +#include <dev/ofw/openfirm.h> + +#include <arm/nvidia/tegra124/tegra124_mp.h> + +#include "platform_if.h" + +#define PMC_PHYSBASE 0x7000e400 +#define PMC_SIZE 0x400 +#define PMC_CONTROL_REG 0x0 +#define PMC_SCRATCH0 0x50 +#define PMC_SCRATCH0_MODE_RECOVERY (1 << 31) +#define PMC_SCRATCH0_MODE_BOOTLOADER (1 << 30) +#define PMC_SCRATCH0_MODE_RCM (1 << 1) +#define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \ + PMC_SCRATCH0_MODE_BOOTLOADER | \ + PMC_SCRATCH0_MODE_RCM) + +struct fdt_fixup_entry fdt_fixup_table[] = { + { NULL, NULL } +}; + +struct arm32_dma_range * +bus_dma_get_range(void) +{ + + return (NULL); +} + +int +bus_dma_get_range_nb(void) +{ + + return (0); +} + +static vm_offset_t +tegra124_lastaddr(platform_t plat) +{ + + return (arm_devmap_lastaddr()); +} + +static int +tegra124_attach(platform_t plat) +{ + + return (0); +} + +static void +tegra124_late_init(platform_t plat) +{ + +} + +/* + * Set up static device mappings. + * + */ +static int +tegra124_devmap_init(platform_t plat) +{ + + arm_devmap_add_entry(0x70000000, 0x01000000); + return (0); +} + +void +cpu_reset(void) +{ + bus_space_handle_t pmc; + uint32_t reg; + + printf("Resetting...\n"); + bus_space_map(fdtbus_bs_tag, PMC_PHYSBASE, PMC_SIZE, 0, &pmc); + + reg = bus_space_read_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0); + reg &= PMC_SCRATCH0_MODE_MASK; + bus_space_write_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0, + reg | PMC_SCRATCH0_MODE_BOOTLOADER); /* boot to bootloader */ + bus_space_read_4(fdtbus_bs_tag, pmc, PMC_SCRATCH0); + + reg = bus_space_read_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG); + spinlock_enter(); + dsb(); + bus_space_write_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG, reg | 0x10); + bus_space_read_4(fdtbus_bs_tag, pmc, PMC_CONTROL_REG); + while(1) + ; + +} + +/* + * Early putc routine for EARLY_PRINTF support. To use, add to kernel config: + * option SOCDEV_PA=0x02000000 + * option SOCDEV_VA=0x02000000 + * option EARLY_PRINTF + */ +#if 0 +static void +tegra124_early_putc(int c) +{ + volatile uint32_t * UART_STAT_REG = (uint32_t *)0x02020098; + volatile uint32_t * UART_TX_REG = (uint32_t *)0x02020040; + const uint32_t UART_TXRDY = (1 << 3); + + while ((*UART_STAT_REG & UART_TXRDY) == 0) + continue; + *UART_TX_REG = c; +} +early_putc_t *early_putc = tegra124_early_putc; +#endif + +static platform_method_t tegra124_methods[] = { + PLATFORMMETHOD(platform_attach, tegra124_attach), + PLATFORMMETHOD(platform_lastaddr, tegra124_lastaddr), + PLATFORMMETHOD(platform_devmap_init, tegra124_devmap_init), + PLATFORMMETHOD(platform_late_init, tegra124_late_init), +#ifdef SMP + PLATFORMMETHOD(platform_mp_start_ap, tegra124_mp_start_ap), + PLATFORMMETHOD(platform_mp_setmaxid, tegra124_mp_setmaxid), +#endif + PLATFORMMETHOD_END, +}; + +FDT_PLATFORM_DEF(tegra124, "Nvidia Jetson-TK1", 0, "nvidia,jetson-tk1"); |
