xref: /openbmc/qemu/hw/arm/kzm.c (revision feb58e3b)
1  /*
2   * KZM Board System emulation.
3   *
4   * Copyright (c) 2008 OKL and 2011 NICTA
5   * Written by Hans at OK-Labs
6   * Updated by Peter Chubb.
7   *
8   * This code is licensed under the GPL, version 2 or later.
9   * See the file `COPYING' in the top level directory.
10   *
11   * It (partially) emulates a Kyoto Microcomputer
12   * KZM-ARM11-01 evaluation board, with a Freescale
13   * i.MX31 SoC
14   */
15  
16  #include "qemu/osdep.h"
17  #include "qapi/error.h"
18  #include "hw/arm/fsl-imx31.h"
19  #include "hw/arm/boot.h"
20  #include "hw/boards.h"
21  #include "qemu/error-report.h"
22  #include "exec/address-spaces.h"
23  #include "net/net.h"
24  #include "hw/net/lan9118.h"
25  #include "hw/char/serial-mm.h"
26  #include "sysemu/qtest.h"
27  #include "sysemu/sysemu.h"
28  #include "qemu/cutils.h"
29  
30  /* Memory map for Kzm Emulation Baseboard:
31   * 0x00000000-0x7fffffff See i.MX31 SOC for support
32   * 0x80000000-0x8fffffff RAM                  EMULATED
33   * 0x90000000-0x9fffffff RAM                  EMULATED
34   * 0xa0000000-0xafffffff Flash                IGNORED
35   * 0xb0000000-0xb3ffffff Unavailable          IGNORED
36   * 0xb4000000-0xb4000fff 8-bit free space     IGNORED
37   * 0xb4001000-0xb400100f Board control        IGNORED
38   *  0xb4001003           DIP switch
39   * 0xb4001010-0xb400101f 7-segment LED        IGNORED
40   * 0xb4001020-0xb400102f LED                  IGNORED
41   * 0xb4001030-0xb400103f LED                  IGNORED
42   * 0xb4001040-0xb400104f FPGA, UART           EMULATED
43   * 0xb4001050-0xb400105f FPGA, UART           EMULATED
44   * 0xb4001060-0xb40fffff FPGA                 IGNORED
45   * 0xb6000000-0xb61fffff LAN controller       EMULATED
46   * 0xb6200000-0xb62fffff FPGA NAND Controller IGNORED
47   * 0xb6300000-0xb7ffffff Free                 IGNORED
48   * 0xb8000000-0xb8004fff Memory control registers IGNORED
49   * 0xc0000000-0xc3ffffff PCMCIA/CF            IGNORED
50   * 0xc4000000-0xffffffff Reserved             IGNORED
51   */
52  
53  typedef struct IMX31KZM {
54      FslIMX31State soc;
55      MemoryRegion ram_alias;
56  } IMX31KZM;
57  
58  #define KZM_RAM_ADDR            (FSL_IMX31_SDRAM0_ADDR)
59  #define KZM_FPGA_ADDR           (FSL_IMX31_CS4_ADDR + 0x1040)
60  #define KZM_LAN9118_ADDR        (FSL_IMX31_CS5_ADDR)
61  
62  static struct arm_boot_info kzm_binfo = {
63      .loader_start = KZM_RAM_ADDR,
64      .board_id = 1722,
65  };
66  
67  static void kzm_init(MachineState *machine)
68  {
69      IMX31KZM *s = g_new0(IMX31KZM, 1);
70      unsigned int ram_size;
71      unsigned int alias_offset;
72      unsigned int i;
73  
74      object_initialize_child(OBJECT(machine), "soc", &s->soc, TYPE_FSL_IMX31);
75  
76      qdev_realize(DEVICE(&s->soc), NULL, &error_fatal);
77  
78      /* Check the amount of memory is compatible with the SOC */
79      if (machine->ram_size > (FSL_IMX31_SDRAM0_SIZE + FSL_IMX31_SDRAM1_SIZE)) {
80          char *sz = size_to_str(FSL_IMX31_SDRAM0_SIZE + FSL_IMX31_SDRAM1_SIZE);
81          error_report("RAM size more than %s is not supported", sz);
82          g_free(sz);
83          exit(EXIT_FAILURE);
84      }
85  
86      memory_region_add_subregion(get_system_memory(), FSL_IMX31_SDRAM0_ADDR,
87                                  machine->ram);
88  
89      /* initialize the alias memory if any */
90      for (i = 0, ram_size = machine->ram_size, alias_offset = 0;
91           (i < 2) && ram_size; i++) {
92          unsigned int size;
93          static const struct {
94              hwaddr addr;
95              unsigned int size;
96          } ram[2] = {
97              { FSL_IMX31_SDRAM0_ADDR, FSL_IMX31_SDRAM0_SIZE },
98              { FSL_IMX31_SDRAM1_ADDR, FSL_IMX31_SDRAM1_SIZE },
99          };
100  
101          size = MIN(ram_size, ram[i].size);
102  
103          ram_size -= size;
104  
105          if (size < ram[i].size) {
106              memory_region_init_alias(&s->ram_alias, NULL, "ram.alias",
107                                       machine->ram,
108                                       alias_offset, ram[i].size - size);
109              memory_region_add_subregion(get_system_memory(),
110                                          ram[i].addr + size, &s->ram_alias);
111          }
112  
113          alias_offset += ram[i].size;
114      }
115  
116      if (qemu_find_nic_info("lan9118", true, NULL)) {
117          lan9118_init(KZM_LAN9118_ADDR,
118                       qdev_get_gpio_in(DEVICE(&s->soc.avic), 52));
119      }
120  
121      if (serial_hd(2)) { /* touchscreen */
122          serial_mm_init(get_system_memory(), KZM_FPGA_ADDR+0x10, 0,
123                         qdev_get_gpio_in(DEVICE(&s->soc.avic), 52),
124                         14745600, serial_hd(2), DEVICE_NATIVE_ENDIAN);
125      }
126  
127      kzm_binfo.ram_size = machine->ram_size;
128  
129      if (!qtest_enabled()) {
130          arm_load_kernel(&s->soc.cpu, machine, &kzm_binfo);
131      }
132  }
133  
134  static void kzm_machine_init(MachineClass *mc)
135  {
136      mc->desc = "ARM KZM Emulation Baseboard (ARM1136)";
137      mc->init = kzm_init;
138      mc->ignore_memory_transaction_failures = true;
139      mc->default_ram_id = "kzm.ram";
140  }
141  
142  DEFINE_MACHINE("kzm", kzm_machine_init)
143