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hw/arm/mps2-tz.c: Instantiate MPCs

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Instantiate and wire up the Memory Protection Controllers
in the MPS2 board itself.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20180620132032.28865-9-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2018-06-22 13:28:41 +01:00
parent bb75e16d5e
commit 665670aa3a
1 changed files with 44 additions and 27 deletions
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71
hw/arm/mps2-tz.c
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@ -44,6 +44,7 @@
#include "hw/timer/cmsdk-apb-timer.h"
#include "hw/misc/mps2-scc.h"
#include "hw/misc/mps2-fpgaio.h"
#include "hw/misc/tz-mpc.h"
#include "hw/arm/iotkit.h"
#include "hw/devices.h"
#include "net/net.h"
@ -64,13 +65,12 @@ typedef struct {
IoTKit iotkit;
MemoryRegion psram;
MemoryRegion ssram1;
MemoryRegion ssram[3];
MemoryRegion ssram1_m;
MemoryRegion ssram23;
MPS2SCC scc;
MPS2FPGAIO fpgaio;
TZPPC ppc[5];
UnimplementedDeviceState ssram_mpc[3];
TZMPC ssram_mpc[3];
UnimplementedDeviceState spi[5];
UnimplementedDeviceState i2c[4];
UnimplementedDeviceState i2s_audio;
@ -96,16 +96,6 @@ typedef struct {
/* Main SYSCLK frequency in Hz */
#define SYSCLK_FRQ 20000000
/* Initialize the auxiliary RAM region @mr and map it into
* the memory map at @base.
*/
static void make_ram(MemoryRegion *mr, const char *name,
hwaddr base, hwaddr size)
{
memory_region_init_ram(mr, NULL, name, size, &error_fatal);
memory_region_add_subregion(get_system_memory(), base, mr);
}
/* Create an alias of an entire original MemoryRegion @orig
* located at @base in the memory map.
*/
@ -245,6 +235,44 @@ static MemoryRegion *make_eth_dev(MPS2TZMachineState *mms, void *opaque,
return sysbus_mmio_get_region(s, 0);
}
static MemoryRegion *make_mpc(MPS2TZMachineState *mms, void *opaque,
const char *name, hwaddr size)
{
TZMPC *mpc = opaque;
int i = mpc - &mms->ssram_mpc[0];
MemoryRegion *ssram = &mms->ssram[i];
MemoryRegion *upstream;
char *mpcname = g_strdup_printf("%s-mpc", name);
static uint32_t ramsize[] = { 0x00400000, 0x00200000, 0x00200000 };
static uint32_t rambase[] = { 0x00000000, 0x28000000, 0x28200000 };
memory_region_init_ram(ssram, NULL, name, ramsize[i], &error_fatal);
init_sysbus_child(OBJECT(mms), mpcname, mpc,
sizeof(mms->ssram_mpc[0]), TYPE_TZ_MPC);
object_property_set_link(OBJECT(mpc), OBJECT(ssram),
"downstream", &error_fatal);
object_property_set_bool(OBJECT(mpc), true, "realized", &error_fatal);
/* Map the upstream end of the MPC into system memory */
upstream = sysbus_mmio_get_region(SYS_BUS_DEVICE(mpc), 1);
memory_region_add_subregion(get_system_memory(), rambase[i], upstream);
/* and connect its interrupt to the IoTKit */
qdev_connect_gpio_out_named(DEVICE(mpc), "irq", 0,
qdev_get_gpio_in_named(DEVICE(&mms->iotkit),
"mpcexp_status", i));
/* The first SSRAM is a special case as it has an alias; accesses to
* the alias region at 0x00400000 must also go to the MPC upstream.
*/
if (i == 0) {
make_ram_alias(&mms->ssram1_m, "mps.ssram1_m", upstream, 0x00400000);
}
g_free(mpcname);
/* Return the register interface MR for our caller to map behind the PPC */
return sysbus_mmio_get_region(SYS_BUS_DEVICE(mpc), 0);
}
static void mps2tz_common_init(MachineState *machine)
{
MPS2TZMachineState *mms = MPS2TZ_MACHINE(machine);
@ -306,14 +334,6 @@ static void mps2tz_common_init(MachineState *machine)
NULL, "mps.ram", 0x01000000);
memory_region_add_subregion(system_memory, 0x80000000, &mms->psram);
/* The SSRAM memories should all be behind Memory Protection Controllers,
* but we don't implement that yet.
*/
make_ram(&mms->ssram1, "mps.ssram1", 0x00000000, 0x00400000);
make_ram_alias(&mms->ssram1_m, "mps.ssram1_m", &mms->ssram1, 0x00400000);
make_ram(&mms->ssram23, "mps.ssram23", 0x28000000, 0x00400000);
/* The overflow IRQs for all UARTs are ORed together.
* Tx, Rx and "combined" IRQs are sent to the NVIC separately.
* Create the OR gate for this.
@ -343,12 +363,9 @@ static void mps2tz_common_init(MachineState *machine)
const PPCInfo ppcs[] = { {
.name = "apb_ppcexp0",
.ports = {
{ "ssram-mpc0", make_unimp_dev, &mms->ssram_mpc[0],
0x58007000, 0x1000 },
{ "ssram-mpc1", make_unimp_dev, &mms->ssram_mpc[1],
0x58008000, 0x1000 },
{ "ssram-mpc2", make_unimp_dev, &mms->ssram_mpc[2],
0x58009000, 0x1000 },
{ "ssram-0", make_mpc, &mms->ssram_mpc[0], 0x58007000, 0x1000 },
{ "ssram-1", make_mpc, &mms->ssram_mpc[1], 0x58008000, 0x1000 },
{ "ssram-2", make_mpc, &mms->ssram_mpc[2], 0x58009000, 0x1000 },
},
}, {
.name = "apb_ppcexp1",