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-rw-r--r--configs/common/FSConfig.py24
-rw-r--r--configs/common/PlatformConfig.py1
-rw-r--r--src/dev/arm/RealView.py200
3 files changed, 218 insertions, 7 deletions
diff --git a/configs/common/FSConfig.py b/configs/common/FSConfig.py
index 004d06d55..eea6b2ad0 100644
--- a/configs/common/FSConfig.py
+++ b/configs/common/FSConfig.py
@@ -220,6 +220,8 @@ def makeArmSystem(mem_mode, machine_type, num_cpus=1, mdesc=None,
"VExpress_EMM64": "vmlinux.aarch64.20140821",
}
+ pci_devices = []
+
if bare_metal:
self = ArmSystem()
else:
@@ -257,16 +259,22 @@ def makeArmSystem(mem_mode, machine_type, num_cpus=1, mdesc=None,
print "Selected 64-bit ARM architecture, updating default disk image..."
mdesc.diskname = 'linaro-minimal-aarch64.img'
- self.cf0 = CowIdeDisk(driveID='master')
- self.cf0.childImage(mdesc.disk())
# Attach any PCI devices this platform supports
self.realview.attachPciDevices()
- # default to an IDE controller rather than a CF one
- try:
+
+ self.cf0 = CowIdeDisk(driveID='master')
+ self.cf0.childImage(mdesc.disk())
+ # Old platforms have a built-in IDE or CF controller. Default to
+ # the IDE controller if both exist. New platforms expect the
+ # storage controller to be added from the config script.
+ if hasattr(self.realview, "ide"):
self.realview.ide.disks = [self.cf0]
- except:
+ elif hasattr(self.realview, "cf_ctrl"):
self.realview.cf_ctrl.disks = [self.cf0]
+ else:
+ self.pci_ide = IdeController(disks=[self.cf0])
+ pci_devices.append(self.pci_ide)
self.mem_ranges = []
size_remain = long(Addr(mdesc.mem()))
@@ -360,7 +368,13 @@ def makeArmSystem(mem_mode, machine_type, num_cpus=1, mdesc=None,
self.realview.attachOnChipIO(self.iobus)
else:
self.realview.attachOnChipIO(self.membus, self.bridge)
+
+ # Attach off-chip devices
self.realview.attachIO(self.iobus)
+ for dev_id, dev in enumerate(pci_devices):
+ dev.pci_bus, dev.pci_dev, dev.pci_func = (0, dev_id + 1, 0)
+ self.realview.attachPciDevice(dev, self.iobus)
+
self.intrctrl = IntrControl()
self.terminal = Terminal()
self.vncserver = VncServer()
diff --git a/configs/common/PlatformConfig.py b/configs/common/PlatformConfig.py
index 636e6d8ac..1d047b118 100644
--- a/configs/common/PlatformConfig.py
+++ b/configs/common/PlatformConfig.py
@@ -48,6 +48,7 @@ _platform_classes = {}
_platform_aliases_all = [
("RealView_EB", "RealViewEB"),
("RealView_PBX", "RealViewPBX"),
+ ("VExpress_GEM5", "VExpress_GEM5_V1"),
]
# Filtered list of aliases. Only aliases for existing platforms exist
diff --git a/src/dev/arm/RealView.py b/src/dev/arm/RealView.py
index 3ff0d4fe6..9d4dc6aaf 100644
--- a/src/dev/arm/RealView.py
+++ b/src/dev/arm/RealView.py
@@ -271,6 +271,26 @@ class RealView(Platform):
system = Param.System(Parent.any, "system")
_mem_regions = [(Addr(0), Addr('256MB'))]
+ def _on_chip_devices(self):
+ return []
+
+ def _off_chip_devices(self):
+ return []
+
+ _off_chip_ranges = []
+
+ def _attach_io(self, devices, bus):
+ for d in devices:
+ if hasattr(d, "pio"):
+ d.pio = bus.master
+ if hasattr(d, "dma"):
+ d.dma = bus.slave
+
+ def _attach_clk(self, devices, clkdomain):
+ for d in devices:
+ if hasattr(d, "clk_domain"):
+ d.clk_domain = clkdomain
+
def attachPciDevices(self):
pass
@@ -278,10 +298,19 @@ class RealView(Platform):
pass
def onChipIOClkDomain(self, clkdomain):
- pass
+ self._attach_clk(self._on_chip_devices(), clkdomain)
def offChipIOClkDomain(self, clkdomain):
- pass
+ self._attach_clk(self._off_chip_devices(), clkdomain)
+
+ def attachOnChipIO(self, bus, bridge=None):
+ self._attach_io(self._on_chip_devices(), bus)
+ if bridge:
+ bridge.ranges = self._off_chip_ranges
+
+ def attachIO(self, bus):
+ self._attach_io(self._off_chip_devices(), bus)
+
def setupBootLoader(self, mem_bus, cur_sys, loc):
self.nvmem = SimpleMemory(range = AddrRange('2GB', size = '64MB'),
@@ -716,3 +745,170 @@ class VExpress_EMM64(VExpress_EMM):
cur_sys.load_offset = 0x80000000
+class VExpress_GEM5_V1(RealView):
+ """
+The VExpress gem5 memory map is loosely based on a modified
+Versatile Express RS1 memory map.
+
+The gem5 platform has been designed to implement a subset of the
+original Versatile Express RS1 memory map. Off-chip peripherals should,
+when possible, adhere to the Versatile Express memory map. Non-PCI
+off-chip devices that are gem5-specific should live in the CS5 memory
+space to avoid conflicts with existing devices that we might want to
+model in the future. Such devices should normally have interrupts in
+the gem5-specific SPI range.
+
+On-chip peripherals are loosely modeled after the ARM CoreTile Express
+A15x2 A7x3 memory and interrupt map. In particular, the GIC and
+Generic Timer have the same interrupt lines and base addresses. Other
+on-chip devices are gem5 specific.
+
+Unlike the original Versatile Express RS2 extended platform, gem5 implements a
+large contigious DRAM space, without aliases or holes, starting at the
+2GiB boundary. This means that PCI memory is limited to 1GiB.
+
+Memory map:
+ 0x00000000-0x03ffffff: Boot memory (CS0)
+ 0x04000000-0x07ffffff: Reserved
+ 0x08000000-0x0bffffff: Reserved (CS0 alias)
+ 0x0c000000-0x0fffffff: Reserved (Off-chip, CS4)
+ 0x10000000-0x13ffffff: gem5-specific peripherals (Off-chip, CS5)
+ 0x10000000-0x1000ffff: gem5 energy controller
+
+ 0x14000000-0x17ffffff: Reserved (Off-chip, PSRAM, CS1)
+ 0x18000000-0x1bffffff: Reserved (Off-chip, Peripherals, CS2)
+ 0x1c000000-0x1fffffff: Peripheral block 1 (Off-chip, CS3):
+ 0x1c010000-0x1c01ffff: realview_io (VE system control regs.)
+ 0x1c060000-0x1c06ffff: KMI0 (keyboard)
+ 0x1c070000-0x1c07ffff: KMI1 (mouse)
+ 0x1c090000-0x1c09ffff: UART0
+ 0x1c0a0000-0x1c0affff: UART1 (reserved)
+ 0x1c0b0000-0x1c0bffff: UART2 (reserved)
+ 0x1c0c0000-0x1c0cffff: UART3 (reserved)
+ 0x1c170000-0x1c17ffff: RTC
+
+ 0x20000000-0x3fffffff: On-chip peripherals:
+ 0x2b000000-0x2b00ffff: HDLCD
+
+ 0x2c001000-0x2c001fff: GIC (distributor)
+ 0x2c002000-0x2c0020ff: GIC (CPU interface)
+ 0x2c004000-0x2c005fff: vGIC (HV)
+ 0x2c006000-0x2c007fff: vGIC (VCPU)
+ 0x2c1c0000-0x2c1cffff: GICv2m MSI frame 0
+
+ 0x2d000000-0x2d00ffff: GPU (reserved)
+
+ 0x2f000000-0x2fffffff: PCI IO space
+ 0x30000000-0x3fffffff: PCI config space
+
+ 0x40000000-0x7fffffff: Ext. AXI: Used as PCI memory
+
+ 0x80000000-X: DRAM
+
+Interrupts:
+ 0- 15: Software generated interrupts (SGIs)
+ 16- 31: On-chip private peripherals (PPIs)
+ 25 : vgic
+ 26 : generic_timer (hyp)
+ 27 : generic_timer (virt)
+ 28 : Reserved (Legacy FIQ)
+ 29 : generic_timer (phys, sec)
+ 30 : generic_timer (phys, non-sec)
+ 31 : Reserved (Legacy IRQ)
+ 32- 95: Mother board peripherals (SPIs)
+ 32 : Reserved (SP805)
+ 33 : Reserved (IOFPGA SW int)
+ 34-35: Reserved (SP804)
+ 36 : RTC
+ 37-40: uart0-uart3
+ 41-42: Reserved (PL180)
+ 43 : Reserved (AACI)
+ 44-45: kmi0-kmi1
+ 46 : Reserved (CLCD)
+ 47 : Reserved (Ethernet)
+ 48 : Reserved (USB)
+ 95-255: On-chip interrupt sources (we use these for
+ gem5-specific devices, SPIs)
+ 95 : HDLCD
+ 96- 98: GPU (reserved)
+ 100-103: PCI
+ 256-319: MSI frame 0 (gem5-specific, SPIs)
+ 320-511: Unused
+
+ """
+
+ # Everything above 2GiB is memory
+ _mem_regions = [(Addr('2GB'), Addr('510GB'))]
+
+ _off_chip_ranges = [
+ # CS1-CS5
+ AddrRange(0x0c000000, 0x1fffffff),
+ # External AXI interface (PCI)
+ AddrRange(0x2f000000, 0x7fffffff),
+ ]
+
+ # Platform control device (off-chip)
+ realview_io = RealViewCtrl(proc_id0=0x14000000, proc_id1=0x14000000,
+ idreg=0x02250000, pio_addr=0x1c010000)
+ mcc = VExpressMCC()
+ dcc = CoreTile2A15DCC()
+
+ ### On-chip devices ###
+ gic = Pl390(dist_addr=0x2c001000, cpu_addr=0x2c002000, it_lines=512)
+ vgic = VGic(vcpu_addr=0x2c006000, hv_addr=0x2c004000, ppint=25)
+ gicv2m = Gicv2m()
+ gicv2m.frames = [
+ Gicv2mFrame(spi_base=256, spi_len=64, addr=0x2c1c0000),
+ ]
+
+ generic_timer = GenericTimer(int_phys=29, int_virt=27)
+
+ hdlcd = HDLcd(pxl_clk=dcc.osc_pxl,
+ pio_addr=0x2b000000, int_num=95)
+
+ def _on_chip_devices(self):
+ return [
+ self.gic, self.vgic, self.gicv2m,
+ self.hdlcd,
+ self.generic_timer,
+ ]
+
+ ### Off-chip devices ###
+ uart0 = Pl011(pio_addr=0x1c090000, int_num=37)
+
+ kmi0 = Pl050(pio_addr=0x1c060000, int_num=44)
+ kmi1 = Pl050(pio_addr=0x1c070000, int_num=45, is_mouse=True)
+
+ rtc = PL031(pio_addr=0x1c170000, int_num=36)
+
+ ### gem5-specific off-chip devices ###
+ pci_host = GenericArmPciHost(
+ conf_base=0x30000000, conf_size='256MB', conf_device_bits=12,
+ pci_pio_base=0x2f000000,
+ int_policy="ARM_PCI_INT_DEV", int_base=100, int_count=4)
+
+ energy_ctrl = EnergyCtrl(pio_addr=0x10000000)
+
+
+ def _off_chip_devices(self):
+ return [
+ self.realview_io,
+ self.uart0,
+ self.kmi0, self.kmi1,
+ self.rtc,
+ self.pci_host,
+ self.energy_ctrl,
+ ]
+
+ def attachPciDevice(self, device, bus):
+ device.host = self.pci_host
+ device.pio = bus.master
+ device.dma = bus.slave
+
+ def setupBootLoader(self, mem_bus, cur_sys, loc):
+ self.nvmem = SimpleMemory(range=AddrRange(0, size='64MB'))
+ self.nvmem.port = mem_bus.master
+ cur_sys.boot_loader = [ loc('boot_emm.arm64'), loc('boot_emm.arm') ]
+ cur_sys.atags_addr = 0x8000000
+ cur_sys.load_addr_mask = 0xfffffff
+ cur_sys.load_offset = 0x80000000
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 07:02:50 +0000