xref: /openbmc/qemu/hw/arm/imx25_pdk.c (revision f7160f32)
1 /*
2  * Copyright (c) 2013 Jean-Christophe Dubois <jcd@tribudubois.net>
3  *
4  * PDK Board System emulation.
5  *
6  * Based on hw/arm/kzm.c
7  *
8  * Copyright (c) 2008 OKL and 2011 NICTA
9  * Written by Hans at OK-Labs
10  * Updated by Peter Chubb.
11  *
12  *  This program is free software; you can redistribute it and/or modify it
13  *  under the terms of the GNU General Public License as published by the
14  *  Free Software Foundation; either version 2 of the License, or
15  *  (at your option) any later version.
16  *
17  *  This program is distributed in the hope that it will be useful, but WITHOUT
18  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19  *  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20  *  for more details.
21  *
22  *  You should have received a copy of the GNU General Public License along
23  *  with this program; if not, see <http://www.gnu.org/licenses/>.
24  */
25 
26 #include "qemu/osdep.h"
27 #include "qapi/error.h"
28 #include "cpu.h"
29 #include "hw/qdev-properties.h"
30 #include "hw/arm/fsl-imx25.h"
31 #include "hw/boards.h"
32 #include "qemu/error-report.h"
33 #include "exec/address-spaces.h"
34 #include "sysemu/qtest.h"
35 #include "hw/i2c/i2c.h"
36 #include "qemu/cutils.h"
37 
38 /* Memory map for PDK Emulation Baseboard:
39  * 0x00000000-0x7fffffff See i.MX25 SOC fr support
40  * 0x80000000-0x87ffffff RAM + Alias          EMULATED
41  * 0x90000000-0x9fffffff RAM + Alias          EMULATED
42  * 0xa0000000-0xa7ffffff Flash                IGNORED
43  * 0xa8000000-0xafffffff Flash                IGNORED
44  * 0xb0000000-0xb1ffffff SRAM                 IGNORED
45  * 0xb2000000-0xb3ffffff SRAM                 IGNORED
46  * 0xb4000000-0xb5ffffff CS4                  IGNORED
47  * 0xb6000000-0xb8000fff Reserved             IGNORED
48  * 0xb8001000-0xb8001fff SDRAM CTRL reg       IGNORED
49  * 0xb8002000-0xb8002fff WEIM CTRL reg        IGNORED
50  * 0xb8003000-0xb8003fff M3IF CTRL reg        IGNORED
51  * 0xb8004000-0xb8004fff EMI CTRL reg         IGNORED
52  * 0xb8005000-0xbaffffff Reserved             IGNORED
53  * 0xbb000000-0xbb000fff NAND flash area buf  IGNORED
54  * 0xbb001000-0xbb0011ff NAND flash reserved  IGNORED
55  * 0xbb001200-0xbb001dff Reserved             IGNORED
56  * 0xbb001e00-0xbb001fff NAN flash CTRL reg   IGNORED
57  * 0xbb012000-0xbfffffff Reserved             IGNORED
58  * 0xc0000000-0xffffffff Reserved             IGNORED
59  */
60 
61 typedef struct IMX25PDK {
62     FslIMX25State soc;
63     MemoryRegion ram_alias;
64 } IMX25PDK;
65 
66 static struct arm_boot_info imx25_pdk_binfo;
67 
68 static void imx25_pdk_init(MachineState *machine)
69 {
70     MachineClass *mc = MACHINE_GET_CLASS(machine);
71     IMX25PDK *s = g_new0(IMX25PDK, 1);
72     unsigned int ram_size;
73     unsigned int alias_offset;
74     int i;
75 
76     object_initialize_child(OBJECT(machine), "soc", &s->soc, TYPE_FSL_IMX25);
77 
78     qdev_realize(DEVICE(&s->soc), NULL, &error_fatal);
79 
80     /* We need to initialize our memory */
81     if (machine->ram_size > (FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE)) {
82         char *sz = size_to_str(mc->default_ram_size);
83         error_report("Invalid RAM size, should be %s", sz);
84         g_free(sz);
85         exit(EXIT_FAILURE);
86     }
87 
88     memory_region_add_subregion(get_system_memory(), FSL_IMX25_SDRAM0_ADDR,
89                                 machine->ram);
90 
91     /* initialize the alias memory if any */
92     for (i = 0, ram_size = machine->ram_size, alias_offset = 0;
93          (i < 2) && ram_size; i++) {
94         unsigned int size;
95         static const struct {
96             hwaddr addr;
97             unsigned int size;
98         } ram[2] = {
99             { FSL_IMX25_SDRAM0_ADDR, FSL_IMX25_SDRAM0_SIZE },
100             { FSL_IMX25_SDRAM1_ADDR, FSL_IMX25_SDRAM1_SIZE },
101         };
102 
103         size = MIN(ram_size, ram[i].size);
104 
105         ram_size -= size;
106 
107         if (size < ram[i].size) {
108             memory_region_init_alias(&s->ram_alias, NULL, "ram.alias",
109                                      machine->ram,
110                                      alias_offset, ram[i].size - size);
111             memory_region_add_subregion(get_system_memory(),
112                                         ram[i].addr + size, &s->ram_alias);
113         }
114 
115         alias_offset += ram[i].size;
116     }
117 
118     imx25_pdk_binfo.ram_size = machine->ram_size;
119     imx25_pdk_binfo.loader_start = FSL_IMX25_SDRAM0_ADDR;
120     imx25_pdk_binfo.board_id = 1771,
121     imx25_pdk_binfo.nb_cpus = 1;
122 
123     for (i = 0; i < FSL_IMX25_NUM_ESDHCS; i++) {
124         BusState *bus;
125         DeviceState *carddev;
126         DriveInfo *di;
127         BlockBackend *blk;
128 
129         di = drive_get_next(IF_SD);
130         blk = di ? blk_by_legacy_dinfo(di) : NULL;
131         bus = qdev_get_child_bus(DEVICE(&s->soc.esdhc[i]), "sd-bus");
132         carddev = qdev_new(TYPE_SD_CARD);
133         qdev_prop_set_drive_err(carddev, "drive", blk, &error_fatal);
134         qdev_realize_and_unref(carddev, bus, &error_fatal);
135     }
136 
137     /*
138      * We test explicitly for qtest here as it is not done (yet?) in
139      * arm_load_kernel(). Without this the "make check" command would
140      * fail.
141      */
142     if (!qtest_enabled()) {
143         arm_load_kernel(&s->soc.cpu, machine, &imx25_pdk_binfo);
144     }
145 }
146 
147 static void imx25_pdk_machine_init(MachineClass *mc)
148 {
149     mc->desc = "ARM i.MX25 PDK board (ARM926)";
150     mc->init = imx25_pdk_init;
151     mc->ignore_memory_transaction_failures = true;
152     mc->default_ram_id = "imx25.ram";
153 }
154 
155 DEFINE_MACHINE("imx25-pdk", imx25_pdk_machine_init)
156