j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 1 | /* |
| 2 | * PowerMac NVRAM emulation |
| 3 | * |
| 4 | * Copyright (c) 2005-2007 Fabrice Bellard |
| 5 | * Copyright (c) 2007 Jocelyn Mayer |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 8 | * of this software and associated documentation files (the "Software"), to deal |
| 9 | * in the Software without restriction, including without limitation the rights |
| 10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 11 | * copies of the Software, and to permit persons to whom the Software is |
| 12 | * furnished to do so, subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice shall be included in |
| 15 | * all copies or substantial portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 23 | * THE SOFTWARE. |
| 24 | */ |
pbrook | 87ecb68 | 2007-11-17 17:14:51 +0000 | [diff] [blame] | 25 | #include "hw.h" |
blueswir1 | 95efd11 | 2008-12-24 20:26:14 +0000 | [diff] [blame] | 26 | #include "firmware_abi.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 27 | #include "sysemu/sysemu.h" |
Andreas Färber | baec191 | 2013-01-23 23:03:54 +0000 | [diff] [blame] | 28 | #include "ppc/mac.h" |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 29 | |
blueswir1 | ea026b2 | 2008-12-24 09:38:16 +0000 | [diff] [blame] | 30 | /* debug NVR */ |
| 31 | //#define DEBUG_NVR |
| 32 | |
| 33 | #ifdef DEBUG_NVR |
Blue Swirl | 001faf3 | 2009-05-13 17:53:17 +0000 | [diff] [blame] | 34 | #define NVR_DPRINTF(fmt, ...) \ |
| 35 | do { printf("NVR: " fmt , ## __VA_ARGS__); } while (0) |
blueswir1 | ea026b2 | 2008-12-24 09:38:16 +0000 | [diff] [blame] | 36 | #else |
Blue Swirl | 001faf3 | 2009-05-13 17:53:17 +0000 | [diff] [blame] | 37 | #define NVR_DPRINTF(fmt, ...) |
blueswir1 | ea026b2 | 2008-12-24 09:38:16 +0000 | [diff] [blame] | 38 | #endif |
| 39 | |
aurel32 | bd89f43 | 2008-12-26 23:05:23 +0000 | [diff] [blame] | 40 | #define DEF_SYSTEM_SIZE 0xc10 |
| 41 | |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 42 | /* Direct access to NVRAM */ |
Andreas Färber | 3743cca | 2013-01-23 23:03:58 +0000 | [diff] [blame] | 43 | uint8_t macio_nvram_read(MacIONVRAMState *s, uint32_t addr) |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 44 | { |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 45 | uint32_t ret; |
| 46 | |
Andreas Färber | 3743cca | 2013-01-23 23:03:58 +0000 | [diff] [blame] | 47 | if (addr < s->size) { |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 48 | ret = s->data[addr]; |
Andreas Färber | 3743cca | 2013-01-23 23:03:58 +0000 | [diff] [blame] | 49 | } else { |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 50 | ret = -1; |
Andreas Färber | 3743cca | 2013-01-23 23:03:58 +0000 | [diff] [blame] | 51 | } |
| 52 | NVR_DPRINTF("read addr %04" PRIx32 " val %" PRIx8 "\n", addr, ret); |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 53 | |
| 54 | return ret; |
| 55 | } |
| 56 | |
Andreas Färber | 3743cca | 2013-01-23 23:03:58 +0000 | [diff] [blame] | 57 | void macio_nvram_write(MacIONVRAMState *s, uint32_t addr, uint8_t val) |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 58 | { |
Andreas Färber | 3743cca | 2013-01-23 23:03:58 +0000 | [diff] [blame] | 59 | NVR_DPRINTF("write addr %04" PRIx32 " val %" PRIx8 "\n", addr, val); |
| 60 | if (addr < s->size) { |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 61 | s->data[addr] = val; |
Andreas Färber | 3743cca | 2013-01-23 23:03:58 +0000 | [diff] [blame] | 62 | } |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 63 | } |
| 64 | |
| 65 | /* macio style NVRAM device */ |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 66 | static void macio_nvram_writeb(void *opaque, hwaddr addr, |
Avi Kivity | 23c5e4c | 2011-08-08 16:09:17 +0300 | [diff] [blame] | 67 | uint64_t value, unsigned size) |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 68 | { |
| 69 | MacIONVRAMState *s = opaque; |
j_mayer | 74e9115 | 2007-11-04 01:16:04 +0000 | [diff] [blame] | 70 | |
blueswir1 | 68af3f2 | 2009-02-07 10:48:26 +0000 | [diff] [blame] | 71 | addr = (addr >> s->it_shift) & (s->size - 1); |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 72 | s->data[addr] = value; |
Andreas Färber | 3743cca | 2013-01-23 23:03:58 +0000 | [diff] [blame] | 73 | NVR_DPRINTF("writeb addr %04" PHYS_PRIx " val %" PRIx64 "\n", addr, value); |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 74 | } |
| 75 | |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 76 | static uint64_t macio_nvram_readb(void *opaque, hwaddr addr, |
Avi Kivity | 23c5e4c | 2011-08-08 16:09:17 +0300 | [diff] [blame] | 77 | unsigned size) |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 78 | { |
| 79 | MacIONVRAMState *s = opaque; |
| 80 | uint32_t value; |
| 81 | |
blueswir1 | 68af3f2 | 2009-02-07 10:48:26 +0000 | [diff] [blame] | 82 | addr = (addr >> s->it_shift) & (s->size - 1); |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 83 | value = s->data[addr]; |
blueswir1 | ea026b2 | 2008-12-24 09:38:16 +0000 | [diff] [blame] | 84 | NVR_DPRINTF("readb addr %04x val %x\n", (int)addr, value); |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 85 | |
| 86 | return value; |
| 87 | } |
| 88 | |
Avi Kivity | 23c5e4c | 2011-08-08 16:09:17 +0300 | [diff] [blame] | 89 | static const MemoryRegionOps macio_nvram_ops = { |
| 90 | .read = macio_nvram_readb, |
| 91 | .write = macio_nvram_writeb, |
Andreas Färber | d8c6d07 | 2013-01-23 23:03:59 +0000 | [diff] [blame] | 92 | .endianness = DEVICE_BIG_ENDIAN, |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 93 | }; |
| 94 | |
Juan Quintela | 8e470f8 | 2010-12-03 01:59:09 +0100 | [diff] [blame] | 95 | static const VMStateDescription vmstate_macio_nvram = { |
| 96 | .name = "macio_nvram", |
| 97 | .version_id = 1, |
| 98 | .minimum_version_id = 1, |
| 99 | .minimum_version_id_old = 1, |
| 100 | .fields = (VMStateField[]) { |
| 101 | VMSTATE_VBUFFER_UINT32(data, MacIONVRAMState, 0, NULL, 0, size), |
| 102 | VMSTATE_END_OF_LIST() |
| 103 | } |
| 104 | }; |
blueswir1 | 9b64997 | 2008-12-30 19:01:19 +0000 | [diff] [blame] | 105 | |
blueswir1 | 9b64997 | 2008-12-30 19:01:19 +0000 | [diff] [blame] | 106 | |
Andreas Färber | 95ed3b7 | 2013-01-23 23:04:00 +0000 | [diff] [blame] | 107 | static void macio_nvram_reset(DeviceState *dev) |
blueswir1 | 6e6b736 | 2008-12-28 18:27:10 +0000 | [diff] [blame] | 108 | { |
| 109 | } |
| 110 | |
Andreas Färber | 95ed3b7 | 2013-01-23 23:04:00 +0000 | [diff] [blame] | 111 | static void macio_nvram_realizefn(DeviceState *dev, Error **errp) |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 112 | { |
Andreas Färber | 95ed3b7 | 2013-01-23 23:04:00 +0000 | [diff] [blame] | 113 | SysBusDevice *d = SYS_BUS_DEVICE(dev); |
| 114 | MacIONVRAMState *s = MACIO_NVRAM(dev); |
j_mayer | 74e9115 | 2007-11-04 01:16:04 +0000 | [diff] [blame] | 115 | |
Andreas Färber | 95ed3b7 | 2013-01-23 23:04:00 +0000 | [diff] [blame] | 116 | s->data = g_malloc0(s->size); |
aurel32 | 3f7cbbb | 2008-12-26 23:05:15 +0000 | [diff] [blame] | 117 | |
Avi Kivity | 23c5e4c | 2011-08-08 16:09:17 +0300 | [diff] [blame] | 118 | memory_region_init_io(&s->mem, &macio_nvram_ops, s, "macio-nvram", |
Andreas Färber | 95ed3b7 | 2013-01-23 23:04:00 +0000 | [diff] [blame] | 119 | s->size << s->it_shift); |
| 120 | sysbus_init_mmio(d, &s->mem); |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 121 | } |
| 122 | |
Andreas Färber | 95ed3b7 | 2013-01-23 23:04:00 +0000 | [diff] [blame] | 123 | static void macio_nvram_unrealizefn(DeviceState *dev, Error **errp) |
j_mayer | 74e9115 | 2007-11-04 01:16:04 +0000 | [diff] [blame] | 124 | { |
Andreas Färber | 95ed3b7 | 2013-01-23 23:04:00 +0000 | [diff] [blame] | 125 | MacIONVRAMState *s = MACIO_NVRAM(dev); |
| 126 | |
| 127 | g_free(s->data); |
| 128 | } |
| 129 | |
| 130 | static Property macio_nvram_properties[] = { |
| 131 | DEFINE_PROP_UINT32("size", MacIONVRAMState, size, 0), |
| 132 | DEFINE_PROP_UINT32("it_shift", MacIONVRAMState, it_shift, 0), |
| 133 | DEFINE_PROP_END_OF_LIST() |
| 134 | }; |
| 135 | |
| 136 | static void macio_nvram_class_init(ObjectClass *oc, void *data) |
| 137 | { |
| 138 | DeviceClass *dc = DEVICE_CLASS(oc); |
| 139 | |
| 140 | dc->realize = macio_nvram_realizefn; |
| 141 | dc->unrealize = macio_nvram_unrealizefn; |
| 142 | dc->reset = macio_nvram_reset; |
| 143 | dc->vmsd = &vmstate_macio_nvram; |
| 144 | dc->props = macio_nvram_properties; |
| 145 | } |
| 146 | |
| 147 | static const TypeInfo macio_nvram_type_info = { |
| 148 | .name = TYPE_MACIO_NVRAM, |
| 149 | .parent = TYPE_SYS_BUS_DEVICE, |
| 150 | .instance_size = sizeof(MacIONVRAMState), |
| 151 | .class_init = macio_nvram_class_init, |
| 152 | }; |
| 153 | |
| 154 | static void macio_nvram_register_types(void) |
| 155 | { |
| 156 | type_register_static(&macio_nvram_type_info); |
j_mayer | 74e9115 | 2007-11-04 01:16:04 +0000 | [diff] [blame] | 157 | } |
| 158 | |
blueswir1 | 95efd11 | 2008-12-24 20:26:14 +0000 | [diff] [blame] | 159 | /* Set up a system OpenBIOS NVRAM partition */ |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 160 | void pmac_format_nvram_partition (MacIONVRAMState *nvr, int len) |
| 161 | { |
blueswir1 | 95efd11 | 2008-12-24 20:26:14 +0000 | [diff] [blame] | 162 | unsigned int i; |
| 163 | uint32_t start = 0, end; |
| 164 | struct OpenBIOS_nvpart_v1 *part_header; |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 165 | |
blueswir1 | 95efd11 | 2008-12-24 20:26:14 +0000 | [diff] [blame] | 166 | // OpenBIOS nvram variables |
| 167 | // Variable partition |
| 168 | part_header = (struct OpenBIOS_nvpart_v1 *)nvr->data; |
| 169 | part_header->signature = OPENBIOS_PART_SYSTEM; |
| 170 | pstrcpy(part_header->name, sizeof(part_header->name), "system"); |
| 171 | |
| 172 | end = start + sizeof(struct OpenBIOS_nvpart_v1); |
| 173 | for (i = 0; i < nb_prom_envs; i++) |
| 174 | end = OpenBIOS_set_var(nvr->data, end, prom_envs[i]); |
| 175 | |
| 176 | // End marker |
| 177 | nvr->data[end++] = '\0'; |
| 178 | |
| 179 | end = start + ((end - start + 15) & ~15); |
aurel32 | bd89f43 | 2008-12-26 23:05:23 +0000 | [diff] [blame] | 180 | /* XXX: OpenBIOS is not able to grow up a partition. Leave some space for |
| 181 | new variables. */ |
| 182 | if (end < DEF_SYSTEM_SIZE) |
| 183 | end = DEF_SYSTEM_SIZE; |
blueswir1 | 95efd11 | 2008-12-24 20:26:14 +0000 | [diff] [blame] | 184 | OpenBIOS_finish_partition(part_header, end - start); |
| 185 | |
| 186 | // free partition |
| 187 | start = end; |
| 188 | part_header = (struct OpenBIOS_nvpart_v1 *)&nvr->data[start]; |
| 189 | part_header->signature = OPENBIOS_PART_FREE; |
| 190 | pstrcpy(part_header->name, sizeof(part_header->name), "free"); |
| 191 | |
| 192 | end = len; |
| 193 | OpenBIOS_finish_partition(part_header, end - start); |
j_mayer | 3cbee15 | 2007-10-28 23:42:18 +0000 | [diff] [blame] | 194 | } |
Andreas Färber | 95ed3b7 | 2013-01-23 23:04:00 +0000 | [diff] [blame] | 195 | |
| 196 | type_init(macio_nvram_register_types) |