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envelope-from=bin.meng@processmission.com; helo=SEYPR02CU001.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Add the E2000 SCP SRAM window used for SCMI messages and map the MHU doorbell into the board-control aperture. Signed-off-by: Bin Meng --- hw/arm/phytium_e2000.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/hw/arm/phytium_e2000.c b/hw/arm/phytium_e2000.c index f586184e51..ff8dd3354b 100644 --- a/hw/arm/phytium_e2000.c +++ b/hw/arm/phytium_e2000.c @@ -26,6 +26,7 @@ #include "hw/intc/arm_gicv3_common.h" #include "hw/intc/arm_gicv3_its_common.h" #include "hw/misc/phytium_e2000_ddr.h" +#include "hw/misc/phytium_e2000_mhu.h" #include "hw/misc/unimp.h" #include "hw/net/cadence_gem.h" #include "hw/pci/pci.h" @@ -49,6 +50,9 @@ OBJECT_DECLARE_SIMPLE_TYPE(PhytiumE2000State, PHYTIUM_PI) #define PHYTIUM_E2000_NUM_UARTS 7 #define PHYTIUM_E2000_NUM_GEMS 4 +#define PHYTIUM_E2000_MHU_BASE 0x32a00000 +#define PHYTIUM_E2000_SCP_SRAM_BASE 0x32a10000 +#define PHYTIUM_E2000_SCP_SRAM_SIZE 0x2000 #define PHYTIUM_E2000_DDR_STATUS_BASE 0x32b33000 #define PHYTIUM_E2000_GTIMER_HZ 50000000 @@ -90,6 +94,7 @@ struct PhytiumE2000State { DeviceState *gic; PhytiumE2000MciState *mci[PHYTIUM_E2000_NUM_MCIS]; CadenceGEMState *gem[PHYTIUM_E2000_NUM_GEMS]; + MemoryRegion scp_sram; MemoryRegion ram_low; MemoryRegion ram_high; }; @@ -463,6 +468,33 @@ static void phytium_e2000_create_ddr_status(PhytiumE2000State *s) sysbus_mmio_map_overlap(sbd, 0, PHYTIUM_E2000_DDR_STATUS_BASE, 2); } +static void phytium_e2000_create_scp_sram(PhytiumE2000State *s) +{ + /* + * PBF exchanges SCMI messages and platform parameters through this SCP + * SRAM window. Map writable RAM over the board-control placeholder before + * the MHU doorbell starts completing requests in it. + */ + memory_region_init_ram(&s->scp_sram, NULL, "phytium-e2000.scp-sram", + PHYTIUM_E2000_SCP_SRAM_SIZE, &error_fatal); + memory_region_add_subregion_overlap(get_system_memory(), + PHYTIUM_E2000_SCP_SRAM_BASE, &s->scp_sram, 1); +} + +static void phytium_e2000_create_mhu(PhytiumE2000State *s) +{ + DeviceState *dev = qdev_new(TYPE_PHYTIUM_E2000_MHU); + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + + /* + * MHU is the notification side of the SCMI transport. The message body + * remains in SCP SRAM, so this device only owns the doorbell aperture. + */ + object_property_add_child(OBJECT(s), "mhu", OBJECT(dev)); + sysbus_realize_and_unref(sbd, &error_fatal); + sysbus_mmio_map_overlap(sbd, 0, PHYTIUM_E2000_MHU_BASE, 2); +} + static void phytium_e2000_create_unimplemented(void) { /* @@ -582,6 +614,8 @@ static void phytium_pi_init(MachineState *ms) phytium_e2000_create_cpus(s); phytium_e2000_create_gic(s); + phytium_e2000_create_scp_sram(s); + phytium_e2000_create_mhu(s); phytium_e2000_create_ddr_status(s); for (i = 0; i < PHYTIUM_E2000_NUM_MCIS; i++) { -- 2.53.0