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hw/arm/virt: add secure memory region and UART

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Add a secure memory region to the virt board, which is the
same as the nonsecure memory region except that it also has
a secure-only UART in it. This is only created if the
board is started with the '-machine secure=on' property.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
This commit is contained in:
Peter Maydell 2016-01-21 14:15:07 +00:00
parent 1d939a68af
commit 3df708eb48
2 changed files with 49 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
hw/arm/virt.c
View File

@ -123,6 +123,7 @@ static const MemMapEntry a15memmap[] = {
[VIRT_RTC] = { 0x09010000, 0x00001000 },
[VIRT_FW_CFG] = { 0x09020000, 0x00000018 },
[VIRT_GPIO] = { 0x09030000, 0x00001000 },
[VIRT_SECURE_UART] = { 0x09040000, 0x00001000 },
[VIRT_MMIO] = { 0x0a000000, 0x00000200 },
/* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
[VIRT_PLATFORM_BUS] = { 0x0c000000, 0x02000000 },
@ -139,6 +140,7 @@ static const int a15irqmap[] = {
[VIRT_RTC] = 2,
[VIRT_PCIE] = 3, /* ... to 6 */
[VIRT_GPIO] = 7,
[VIRT_SECURE_UART] = 8,
[VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */
[VIRT_GIC_V2M] = 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */
[VIRT_PLATFORM_BUS] = 112, /* ...to 112 + PLATFORM_BUS_NUM_IRQS -1 */
@ -489,16 +491,22 @@ static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic, int type, bool secure)
}
}
static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic)
static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic, int uart,
MemoryRegion *mem)
{
char *nodename;
hwaddr base = vbi->memmap[VIRT_UART].base;
hwaddr size = vbi->memmap[VIRT_UART].size;
int irq = vbi->irqmap[VIRT_UART];
hwaddr base = vbi->memmap[uart].base;
hwaddr size = vbi->memmap[uart].size;
int irq = vbi->irqmap[uart];
const char compat[] = "arm,pl011\0arm,primecell";
const char clocknames[] = "uartclk\0apb_pclk";
DeviceState *dev = qdev_create(NULL, "pl011");
SysBusDevice *s = SYS_BUS_DEVICE(dev);
sysbus_create_simple("pl011", base, pic[irq]);
qdev_init_nofail(dev);
memory_region_add_subregion(mem, base,
sysbus_mmio_get_region(s, 0));
sysbus_connect_irq(s, 0, pic[irq]);
nodename = g_strdup_printf("/pl011@%" PRIx64, base);
qemu_fdt_add_subnode(vbi->fdt, nodename);
@ -515,7 +523,14 @@ static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic)
qemu_fdt_setprop(vbi->fdt, nodename, "clock-names",
clocknames, sizeof(clocknames));
qemu_fdt_setprop_string(vbi->fdt, "/chosen", "stdout-path", nodename);
if (uart == VIRT_UART) {
qemu_fdt_setprop_string(vbi->fdt, "/chosen", "stdout-path", nodename);
} else {
/* Mark as not usable by the normal world */
qemu_fdt_setprop_string(vbi->fdt, nodename, "status", "disabled");
qemu_fdt_setprop_string(vbi->fdt, nodename, "secure-status", "okay");
}
g_free(nodename);
}
@ -995,6 +1010,7 @@ static void machvirt_init(MachineState *machine)
VirtMachineState *vms = VIRT_MACHINE(machine);
qemu_irq pic[NUM_IRQS];
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *secure_sysmem = NULL;
int gic_version = vms->gic_version;
int n, max_cpus;
MemoryRegion *ram = g_new(MemoryRegion, 1);
@ -1053,6 +1069,23 @@ static void machvirt_init(MachineState *machine)
exit(1);
}
if (vms->secure) {
if (kvm_enabled()) {
error_report("mach-virt: KVM does not support Security extensions");
exit(1);
}
/* The Secure view of the world is the same as the NonSecure,
* but with a few extra devices. Create it as a container region
* containing the system memory at low priority; any secure-only
* devices go in at higher priority and take precedence.
*/
secure_sysmem = g_new(MemoryRegion, 1);
memory_region_init(secure_sysmem, OBJECT(machine), "secure-memory",
UINT64_MAX);
memory_region_add_subregion_overlap(secure_sysmem, 0, sysmem, -1);
}
create_fdt(vbi);
for (n = 0; n < smp_cpus; n++) {
@ -1095,6 +1128,10 @@ static void machvirt_init(MachineState *machine)
object_property_set_link(cpuobj, OBJECT(sysmem), "memory",
&error_abort);
if (vms->secure) {
object_property_set_link(cpuobj, OBJECT(secure_sysmem),
"secure-memory", &error_abort);
}
object_property_set_bool(cpuobj, true, "realized", NULL);
}
@ -1111,7 +1148,11 @@ static void machvirt_init(MachineState *machine)
create_gic(vbi, pic, gic_version, vms->secure);
create_uart(vbi, pic);
create_uart(vbi, pic, VIRT_UART, sysmem);
if (vms->secure) {
create_uart(vbi, pic, VIRT_SECURE_UART, secure_sysmem);
}
create_rtc(vbi, pic);

1
include/hw/arm/virt.h
View File

@ -60,6 +60,7 @@ enum {
VIRT_PLATFORM_BUS,
VIRT_PCIE_MMIO_HIGH,
VIRT_GPIO,
VIRT_SECURE_UART,
};
typedef struct MemMapEntry {