| 1 | /* $OpenBSD: omap_machdep.c,v 1.6 2015/05/19 03:30:54 jsg Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2013 Sylvestre Gallon <ccna.syl@gmail.com> |
| 4 | * |
| 5 | * Permission to use, copy, modify, and distribute this software for any |
| 6 | * purpose with or without fee is hereby granted, provided that the above |
| 7 | * copyright notice and this permission notice appear in all copies. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 16 | */ |
| 17 | |
| 18 | #include <sys/param.h> |
| 19 | #include <sys/types.h> |
| 20 | #include <sys/device.h> |
| 21 | #include <sys/systm.h> |
| 22 | #include <sys/termios.h> |
| 23 | |
| 24 | #include <machine/bus.h> |
| 25 | #include <machine/bootconfig.h> |
| 26 | |
| 27 | #include <dev/ic/comreg.h> |
| 28 | #include <dev/ic/comvar.h> |
| 29 | |
| 30 | #include <arm/cortex/smc.h> |
| 31 | #include <arm/armv7/armv7var.h> |
| 32 | #include <armv7/armv7/armv7var.h> |
| 33 | #include <armv7/armv7/armv7_machdep.h> |
| 34 | |
| 35 | extern void omap4_smc_call(uint32_t, uint32_t); |
| 36 | extern void omdog_reset(void); |
| 37 | extern char *omap_board_name(void); |
| 38 | extern struct board_dev *omap_board_devs(void); |
| 39 | extern void omap_board_init(void); |
| 40 | extern int comcnspeed; |
| 41 | extern int comcnmode; |
| 42 | |
| 43 | void |
| 44 | omap_platform_smc_write(bus_space_tag_t iot, bus_space_handle_t ioh, |
| 45 | bus_size_t off, uint32_t op, uint32_t val) |
| 46 | { |
| 47 | switch (op) { |
| 48 | case 0x100: /* PL310 DEBUG */ |
| 49 | case 0x102: /* PL310 CTL */ |
| 50 | break; |
| 51 | default: |
| 52 | panic("platform_smc_write: invalid operation %d", op); |
| 53 | } |
| 54 | |
| 55 | omap4_smc_call(op, val); |
| 56 | } |
| 57 | |
| 58 | void |
| 59 | omap_platform_init_cons(void) |
| 60 | { |
| 61 | paddr_t paddr; |
| 62 | |
| 63 | switch (board_id) { |
| 64 | case BOARD_ID_OMAP3_BEAGLE: |
| 65 | case BOARD_ID_OMAP3_OVERO: |
| 66 | paddr = 0x49020000; |
| 67 | break; |
| 68 | case BOARD_ID_AM335X_BEAGLEBONE: |
| 69 | paddr = 0x44e09000; |
| 70 | break; |
| 71 | case BOARD_ID_OMAP4_PANDA: |
| 72 | paddr = 0x48020000; |
| 73 | break; |
| 74 | } |
| 75 | |
| 76 | comcnattach(&armv7_a4x_bs_tag, paddr, comcnspeed, 48000000, comcnmode); |
| 77 | comdefaultrate = comcnspeed; |
| 78 | } |
| 79 | |
| 80 | void |
| 81 | omap_platform_watchdog_reset(void) |
| 82 | { |
| 83 | omdog_reset(); |
| 84 | } |
| 85 | |
| 86 | void |
| 87 | omap_platform_powerdown(void) |
| 88 | { |
| 89 | |
| 90 | } |
| 91 | |
| 92 | const char * |
| 93 | omap_platform_board_name(void) |
| 94 | { |
| 95 | return (omap_board_name()); |
| 96 | } |
| 97 | |
| 98 | void |
| 99 | omap_platform_disable_l2_if_needed(void) |
| 100 | { |
| 101 | switch (board_id) { |
| 102 | case BOARD_ID_OMAP4_PANDA: |
| 103 | /* disable external L2 cache */ |
| 104 | omap4_smc_call(0x102, 0); |
| 105 | break; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | void |
| 110 | omap_platform_board_init(void) |
| 111 | { |
| 112 | omap_board_init(); |
| 113 | } |
| 114 | |
| 115 | struct armv7_platform omap_platform = { |
| 116 | .boot_name = "OpenBSD/omap", |
| 117 | .board_name = omap_platform_board_name, |
| 118 | .board_init = omap_platform_board_init, |
| 119 | .smc_write = omap_platform_smc_write, |
| 120 | .init_cons = omap_platform_init_cons, |
| 121 | .watchdog_reset = omap_platform_watchdog_reset, |
| 122 | .powerdown = omap_platform_powerdown, |
| 123 | .disable_l2_if_needed = omap_platform_disable_l2_if_needed, |
| 124 | }; |
| 125 | |
| 126 | struct armv7_platform * |
| 127 | omap_platform_match(void) |
| 128 | { |
| 129 | struct board_dev *devs; |
| 130 | |
| 131 | devs = omap_board_devs(); |
| 132 | if (devs == NULL) |
| 133 | return (NULL); |
| 134 | |
| 135 | omap_platform.devs = devs; |
| 136 | return (&omap_platform); |
| 137 | } |