diff options
Diffstat (limited to 'sys/arm/broadcom/bcm2835/bcm2835_machdep.c')
| -rw-r--r-- | sys/arm/broadcom/bcm2835/bcm2835_machdep.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_machdep.c b/sys/arm/broadcom/bcm2835/bcm2835_machdep.c new file mode 100644 index 000000000000..683fb4986a41 --- /dev/null +++ b/sys/arm/broadcom/bcm2835/bcm2835_machdep.c @@ -0,0 +1,156 @@ +/*- + * SPDX-License-Identifier: BSD-4-Clause + * + * Copyright (c) 2012 Oleksandr Tymoshenko. + * Copyright (c) 1994-1998 Mark Brinicombe. + * Copyright (c) 1994 Brini. + * All rights reserved. + * + * This code is derived from software written for Brini by Mark Brinicombe + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Brini. + * 4. The name of the company nor the name of the author may be used to + * endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI 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. + * + * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45 + */ + +#include "opt_ddb.h" +#include "opt_platform.h" + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/devmap.h> + +#include <vm/vm.h> +#include <vm/pmap.h> + +#include <machine/bus.h> +#include <machine/machdep.h> +#include <machine/platform.h> +#include <machine/platformvar.h> + +#include <dev/ofw/openfirm.h> + +#include <arm/broadcom/bcm2835/bcm2835_wdog.h> +#include <arm/broadcom/bcm2835/bcm2836_mp.h> + +#include "platform_if.h" + +#ifdef SOC_BCM2835 +static platform_devmap_init_t bcm2835_devmap_init; +#endif +#ifdef SOC_BCM2836 +static platform_devmap_init_t bcm2836_devmap_init; +#endif +static platform_late_init_t bcm2835_late_init; +static platform_cpu_reset_t bcm2835_cpu_reset; + +static void +bcm2835_late_init(platform_t plat) +{ + phandle_t system; + pcell_t cells[2]; + int len; + + system = OF_finddevice("/system"); + if (system != -1) { + len = OF_getencprop(system, "linux,serial", cells, + sizeof(cells)); + if (len > 0) + board_set_serial(((uint64_t)cells[0]) << 32 | cells[1]); + + len = OF_getencprop(system, "linux,revision", cells, + sizeof(cells)); + if (len > 0) + board_set_revision(cells[0]); + } +} + +#ifdef SOC_BCM2835 +/* + * Set up static device mappings. + * All on-chip peripherals exist in a 16MB range starting at 0x20000000. + * Map the entire range using 1MB section mappings. + */ +static int +bcm2835_devmap_init(platform_t plat) +{ + + devmap_add_entry(0x20000000, 0x01000000); + return (0); +} +#endif + +#ifdef SOC_BCM2836 +static int +bcm2836_devmap_init(platform_t plat) +{ + + devmap_add_entry(0x3f000000, 0x01000000); + return (0); +} +#endif + +static void +bcm2835_cpu_reset(platform_t plat) +{ + bcmwd_watchdog_reset(); +} + +#ifdef SOC_BCM2835 +static platform_method_t bcm2835_methods[] = { + PLATFORMMETHOD(platform_devmap_init, bcm2835_devmap_init), + PLATFORMMETHOD(platform_late_init, bcm2835_late_init), + PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset), + + PLATFORMMETHOD_END, +}; +FDT_PLATFORM_DEF2(bcm2835, bcm2835_legacy, "bcm2835 (legacy)", 0, "raspberrypi,model-b", 100); +FDT_PLATFORM_DEF2(bcm2835, bcm2835, "bcm2835", 0, "brcm,bcm2835", 100); +#endif + +#if defined(SOC_BCM2836) || defined(SOC_BRCM_BCM2837) +static platform_method_t bcm2836_methods[] = { + PLATFORMMETHOD(platform_devmap_init, bcm2836_devmap_init), + PLATFORMMETHOD(platform_late_init, bcm2835_late_init), + PLATFORMMETHOD(platform_cpu_reset, bcm2835_cpu_reset), + +#ifdef SMP + PLATFORMMETHOD(platform_mp_start_ap, bcm2836_mp_start_ap), + PLATFORMMETHOD(platform_mp_setmaxid, bcm2836_mp_setmaxid), +#endif + + PLATFORMMETHOD_END, +}; +FDT_PLATFORM_DEF2(bcm2836, bcm2836_legacy, "bcm2836 (legacy)", 0, "brcm,bcm2709", 100); +FDT_PLATFORM_DEF2(bcm2836, bcm2836, "bcm2836", 0, "brcm,bcm2836", 100); +FDT_PLATFORM_DEF2(bcm2836, bcm2837, "bcm2837", 0, "brcm,bcm2837", 100); +#endif /* defined(SOC_BCM2836) || defined(SOC_BRCM_BCM2837) */ |