2 * TI OMAP L4 interconnect emulation.
4 * Copyright (C) 2007-2009 Nokia Corporation
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 or
10 * (at your option) any later version of the License.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, see <http://www.gnu.org/licenses/>.
24 target_phys_addr_t base;
26 struct omap_target_agent_s ta[0];
29 struct omap_l4_s *omap_l4_init(target_phys_addr_t base, int ta_num)
31 struct omap_l4_s *bus = g_malloc0(
32 sizeof(*bus) + ta_num * sizeof(*bus->ta));
40 target_phys_addr_t omap_l4_region_base(struct omap_target_agent_s *ta,
43 return ta->bus->base + ta->start[region].offset;
46 static uint32_t omap_l4ta_read(void *opaque, target_phys_addr_t addr)
48 struct omap_target_agent_s *s = (struct omap_target_agent_s *) opaque;
51 case 0x00: /* COMPONENT */
54 case 0x20: /* AGENT_CONTROL */
57 case 0x28: /* AGENT_STATUS */
65 static void omap_l4ta_write(void *opaque, target_phys_addr_t addr,
68 struct omap_target_agent_s *s = (struct omap_target_agent_s *) opaque;
71 case 0x00: /* COMPONENT */
72 case 0x28: /* AGENT_STATUS */
76 case 0x20: /* AGENT_CONTROL */
77 s->control = value & 0x01000700;
78 if (value & 1) /* OCP_RESET */
79 s->status &= ~1; /* REQ_TIMEOUT */
87 static CPUReadMemoryFunc * const omap_l4ta_readfn[] = {
93 static CPUWriteMemoryFunc * const omap_l4ta_writefn[] = {
94 omap_badwidth_write32,
95 omap_badwidth_write32,
99 struct omap_target_agent_s *omap_l4ta_get(struct omap_l4_s *bus,
100 const struct omap_l4_region_s *regions,
101 const struct omap_l4_agent_info_s *agents,
105 struct omap_target_agent_s *ta = NULL;
106 const struct omap_l4_agent_info_s *info = NULL;
108 for (i = 0; i < bus->ta_num; i ++)
109 if (agents[i].ta == cs) {
115 fprintf(stderr, "%s: bad target agent (%i)\n", __FUNCTION__, cs);
120 ta->start = ®ions[info->region];
121 ta->regions = info->regions;
123 ta->component = ('Q' << 24) | ('E' << 16) | ('M' << 8) | ('U' << 0);
124 ta->status = 0x00000000;
125 ta->control = 0x00000200; /* XXX 01000200 for L4TAO */
127 iomemtype = cpu_register_io_memory(omap_l4ta_readfn,
128 omap_l4ta_writefn, ta, DEVICE_NATIVE_ENDIAN);
129 ta->base = omap_l4_attach(ta, info->ta_region, iomemtype);
134 target_phys_addr_t omap_l4_attach(struct omap_target_agent_s *ta, int region,
137 target_phys_addr_t base;
140 if (region < 0 || region >= ta->regions) {
141 fprintf(stderr, "%s: bad io region (%i)\n", __FUNCTION__, region);
145 base = ta->bus->base + ta->start[region].offset;
146 size = ta->start[region].size;
148 cpu_register_physical_memory(base, size, iotype);