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qemu-e2k/hw/arm/tosa.c
Peter Maydell 4672cbd7be hw/arm: Set ignore_memory_transaction_failures for most ARM boards 
Set the MachineClass flag ignore_memory_transaction_failures
for almost all ARM boards. This means they retain the legacy
behaviour that accesses to unimplemented addresses will RAZ/WI
rather than aborting, when a subsequent commit adds support
for external aborts.

The exceptions are:
 * virt -- we know that guests won't try to prod devices
   that we don't describe in the device tree or ACPI tables
 * mps2 -- this board was written to use unimplemented-device
   for all the ranges with devices we don't yet handle

New boards should not set the flag, but instead be written
like the mps2.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1504626814-23124-3-git-send-email-peter.maydell@linaro.org
For the Xilinx boards:
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2017-09-07 13:54:54 +01:00

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/* vim:set shiftwidth=4 ts=4 et: */
/*
* PXA255 Sharp Zaurus SL-6000 PDA platform
*
* Copyright (c) 2008 Dmitry Baryshkov
*
* Code based on spitz platform by Andrzej Zaborowski <balrog@zabor.org>
* This code is licensed under the GNU GPL v2.
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/hw.h"
#include "hw/arm/pxa.h"
#include "hw/arm/arm.h"
#include "hw/devices.h"
#include "hw/arm/sharpsl.h"
#include "hw/pcmcia.h"
#include "hw/boards.h"
#include "hw/i2c/i2c.h"
#include "hw/ssi/ssi.h"
#include "sysemu/block-backend.h"
#include "hw/sysbus.h"
#include "exec/address-spaces.h"
#include "sysemu/sysemu.h"
#define TOSA_RAM 0x04000000
#define TOSA_ROM 0x00800000
#define TOSA_GPIO_USB_IN (5)
#define TOSA_GPIO_nSD_DETECT (9)
#define TOSA_GPIO_ON_RESET (19)
#define TOSA_GPIO_CF_IRQ (21) /* CF slot0 Ready */
#define TOSA_GPIO_CF_CD (13)
#define TOSA_GPIO_TC6393XB_INT (15)
#define TOSA_GPIO_JC_CF_IRQ (36) /* CF slot1 Ready */
#define TOSA_SCOOP_GPIO_BASE 1
#define TOSA_GPIO_IR_POWERDWN (TOSA_SCOOP_GPIO_BASE + 2)
#define TOSA_GPIO_SD_WP (TOSA_SCOOP_GPIO_BASE + 3)
#define TOSA_GPIO_PWR_ON (TOSA_SCOOP_GPIO_BASE + 4)
#define TOSA_SCOOP_JC_GPIO_BASE 1
#define TOSA_GPIO_BT_LED (TOSA_SCOOP_JC_GPIO_BASE + 0)
#define TOSA_GPIO_NOTE_LED (TOSA_SCOOP_JC_GPIO_BASE + 1)
#define TOSA_GPIO_CHRG_ERR_LED (TOSA_SCOOP_JC_GPIO_BASE + 2)
#define TOSA_GPIO_TC6393XB_L3V_ON (TOSA_SCOOP_JC_GPIO_BASE + 5)
#define TOSA_GPIO_WLAN_LED (TOSA_SCOOP_JC_GPIO_BASE + 7)
#define DAC_BASE 0x4e
#define DAC_CH1 0
#define DAC_CH2 1
static void tosa_microdrive_attach(PXA2xxState *cpu)
{
PCMCIACardState *md;
DriveInfo *dinfo;
dinfo = drive_get(IF_IDE, 0, 0);
if (!dinfo || dinfo->media_cd)
return;
md = dscm1xxxx_init(dinfo);
pxa2xx_pcmcia_attach(cpu->pcmcia[0], md);
}
static void tosa_out_switch(void *opaque, int line, int level)
{
switch (line) {
case 0:
fprintf(stderr, "blue LED %s.\n", level ? "on" : "off");
break;
case 1:
fprintf(stderr, "green LED %s.\n", level ? "on" : "off");
break;
case 2:
fprintf(stderr, "amber LED %s.\n", level ? "on" : "off");
break;
case 3:
fprintf(stderr, "wlan LED %s.\n", level ? "on" : "off");
break;
default:
fprintf(stderr, "Uhandled out event: %d = %d\n", line, level);
break;
}
}
static void tosa_reset(void *opaque, int line, int level)
{
if (level) {
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
}
}
static void tosa_gpio_setup(PXA2xxState *cpu,
DeviceState *scp0,
DeviceState *scp1,
TC6393xbState *tmio)
{
qemu_irq *outsignals = qemu_allocate_irqs(tosa_out_switch, cpu, 4);
qemu_irq reset;
/* MMC/SD host */
pxa2xx_mmci_handlers(cpu->mmc,
qdev_get_gpio_in(scp0, TOSA_GPIO_SD_WP),
qemu_irq_invert(qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_nSD_DETECT)));
/* Handle reset */
reset = qemu_allocate_irq(tosa_reset, cpu, 0);
qdev_connect_gpio_out(cpu->gpio, TOSA_GPIO_ON_RESET, reset);
/* PCMCIA signals: card's IRQ and Card-Detect */
pxa2xx_pcmcia_set_irq_cb(cpu->pcmcia[0],
qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_CF_IRQ),
qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_CF_CD));
pxa2xx_pcmcia_set_irq_cb(cpu->pcmcia[1],
qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_JC_CF_IRQ),
NULL);
qdev_connect_gpio_out(scp1, TOSA_GPIO_BT_LED, outsignals[0]);
qdev_connect_gpio_out(scp1, TOSA_GPIO_NOTE_LED, outsignals[1]);
qdev_connect_gpio_out(scp1, TOSA_GPIO_CHRG_ERR_LED, outsignals[2]);
qdev_connect_gpio_out(scp1, TOSA_GPIO_WLAN_LED, outsignals[3]);
qdev_connect_gpio_out(scp1, TOSA_GPIO_TC6393XB_L3V_ON, tc6393xb_l3v_get(tmio));
/* UDC Vbus */
qemu_irq_raise(qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_USB_IN));
}
static uint32_t tosa_ssp_tansfer(SSISlave *dev, uint32_t value)
{
fprintf(stderr, "TG: %d %02x\n", value >> 5, value & 0x1f);
return 0;
}
static void tosa_ssp_realize(SSISlave *dev, Error **errp)
{
/* Nothing to do. */
}
#define TYPE_TOSA_DAC "tosa_dac"
#define TOSA_DAC(obj) OBJECT_CHECK(TosaDACState, (obj), TYPE_TOSA_DAC)
typedef struct {
I2CSlave parent_obj;
int len;
char buf[3];
} TosaDACState;
static int tosa_dac_send(I2CSlave *i2c, uint8_t data)
{
TosaDACState *s = TOSA_DAC(i2c);
s->buf[s->len] = data;
if (s->len ++ > 2) {
#ifdef VERBOSE
fprintf(stderr, "%s: message too long (%i bytes)\n", __FUNCTION__, s->len);
#endif
return 1;
}
if (s->len == 2) {
fprintf(stderr, "dac: channel %d value 0x%02x\n",
s->buf[0], s->buf[1]);
}
return 0;
}
static int tosa_dac_event(I2CSlave *i2c, enum i2c_event event)
{
TosaDACState *s = TOSA_DAC(i2c);
s->len = 0;
switch (event) {
case I2C_START_SEND:
break;
case I2C_START_RECV:
printf("%s: recv not supported!!!\n", __FUNCTION__);
break;
case I2C_FINISH:
#ifdef VERBOSE
if (s->len < 2)
printf("%s: message too short (%i bytes)\n", __FUNCTION__, s->len);
if (s->len > 2)
printf("%s: message too long\n", __FUNCTION__);
#endif
break;
default:
break;
}
return 0;
}
static int tosa_dac_recv(I2CSlave *s)
{
printf("%s: recv not supported!!!\n", __FUNCTION__);
return -1;
}
static void tosa_tg_init(PXA2xxState *cpu)
{
I2CBus *bus = pxa2xx_i2c_bus(cpu->i2c[0]);
i2c_create_slave(bus, TYPE_TOSA_DAC, DAC_BASE);
ssi_create_slave(cpu->ssp[1], "tosa-ssp");
}
static struct arm_boot_info tosa_binfo = {
.loader_start = PXA2XX_SDRAM_BASE,
.ram_size = 0x04000000,
};
static void tosa_init(MachineState *machine)
{
const char *cpu_model = machine->cpu_model;
const char *kernel_filename = machine->kernel_filename;
const char *kernel_cmdline = machine->kernel_cmdline;
const char *initrd_filename = machine->initrd_filename;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *rom = g_new(MemoryRegion, 1);
PXA2xxState *mpu;
TC6393xbState *tmio;
DeviceState *scp0, *scp1;
if (!cpu_model)
cpu_model = "pxa255";
mpu = pxa255_init(address_space_mem, tosa_binfo.ram_size);
memory_region_init_ram(rom, NULL, "tosa.rom", TOSA_ROM, &error_fatal);
memory_region_set_readonly(rom, true);
memory_region_add_subregion(address_space_mem, 0, rom);
tmio = tc6393xb_init(address_space_mem, 0x10000000,
qdev_get_gpio_in(mpu->gpio, TOSA_GPIO_TC6393XB_INT));
scp0 = sysbus_create_simple("scoop", 0x08800000, NULL);
scp1 = sysbus_create_simple("scoop", 0x14800040, NULL);
tosa_gpio_setup(mpu, scp0, scp1, tmio);
tosa_microdrive_attach(mpu);
tosa_tg_init(mpu);
tosa_binfo.kernel_filename = kernel_filename;
tosa_binfo.kernel_cmdline = kernel_cmdline;
tosa_binfo.initrd_filename = initrd_filename;
tosa_binfo.board_id = 0x208;
arm_load_kernel(mpu->cpu, &tosa_binfo);
sl_bootparam_write(SL_PXA_PARAM_BASE);
}
static void tosapda_machine_init(MachineClass *mc)
{
mc->desc = "Sharp SL-6000 (Tosa) PDA (PXA255)";
mc->init = tosa_init;
mc->block_default_type = IF_IDE;
mc->ignore_memory_transaction_failures = true;
}
DEFINE_MACHINE("tosa", tosapda_machine_init)
static void tosa_dac_class_init(ObjectClass *klass, void *data)
{
I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
k->event = tosa_dac_event;
k->recv = tosa_dac_recv;
k->send = tosa_dac_send;
}
static const TypeInfo tosa_dac_info = {
.name = TYPE_TOSA_DAC,
.parent = TYPE_I2C_SLAVE,
.instance_size = sizeof(TosaDACState),
.class_init = tosa_dac_class_init,
};
static void tosa_ssp_class_init(ObjectClass *klass, void *data)
{
SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
k->realize = tosa_ssp_realize;
k->transfer = tosa_ssp_tansfer;
}
static const TypeInfo tosa_ssp_info = {
.name = "tosa-ssp",
.parent = TYPE_SSI_SLAVE,
.instance_size = sizeof(SSISlave),
.class_init = tosa_ssp_class_init,
};
static void tosa_register_types(void)
{
type_register_static(&tosa_dac_info);
type_register_static(&tosa_ssp_info);
}
type_init(tosa_register_types)
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