From d815649c512fc785508315ead66a43385cf55bfb Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Thu, 25 Jan 2024 06:55:43 +0100 Subject: hw/arm/aspeed: Introduce aspeed_soc_cpu_type() helper MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In order to alter AspeedSoCClass::cpu_type in the next commit, introduce the aspeed_soc_cpu_type() helper to retrieve the per-SoC CPU type from AspeedSoCClass. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Cédric Le Goater Reviewed-by: Richard Henderson Reviewed-by: Gavin Shan Signed-off-by: Cédric Le Goater --- hw/arm/aspeed_ast2600.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'hw/arm/aspeed_ast2600.c') diff --git a/hw/arm/aspeed_ast2600.c b/hw/arm/aspeed_ast2600.c index 386a88d4e0..b264433cf0 100644 --- a/hw/arm/aspeed_ast2600.c +++ b/hw/arm/aspeed_ast2600.c @@ -158,7 +158,8 @@ static void aspeed_soc_ast2600_init(Object *obj) } for (i = 0; i < sc->num_cpus; i++) { - object_initialize_child(obj, "cpu[*]", &a->cpu[i], sc->cpu_type); + object_initialize_child(obj, "cpu[*]", &a->cpu[i], + aspeed_soc_cpu_type(sc)); } snprintf(typename, sizeof(typename), "aspeed.scu-%s", socname); -- cgit 1.4.1 From dc13909ed03c05275deb32512e9d8f8e34d79c3b Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Thu, 25 Jan 2024 06:55:44 +0100 Subject: hw/arm/aspeed: Check for CPU types in machine_run_board_init() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Aspeed SoCs use a single CPU type (set as AspeedSoCClass::cpu_type). Convert it to a NULL-terminated array (of a single non-NULL element). Set MachineClass::valid_cpu_types[] to use the common machine code to provide hints when the requested CPU is invalid (see commit e702cbc19e ("machine: Improve is_cpu_type_supported()"). Reviewed-by: Cédric Le Goater Reviewed-by: Richard Henderson Reviewed-by: Gavin Shan Signed-off-by: Philippe Mathieu-Daudé Signed-off-by: Cédric Le Goater --- hw/arm/aspeed.c | 1 + hw/arm/aspeed_ast10x0.c | 6 +++++- hw/arm/aspeed_ast2400.c | 12 ++++++++++-- hw/arm/aspeed_ast2600.c | 6 +++++- hw/arm/aspeed_soc_common.c | 5 ++++- include/hw/arm/aspeed_soc.h | 3 ++- 6 files changed, 27 insertions(+), 6 deletions(-) (limited to 'hw/arm/aspeed_ast2600.c') diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c index d2d490a6d1..fc8355cdce 100644 --- a/hw/arm/aspeed.c +++ b/hw/arm/aspeed.c @@ -1149,6 +1149,7 @@ static void aspeed_machine_class_init_cpus_defaults(MachineClass *mc) mc->default_cpus = sc->num_cpus; mc->min_cpus = sc->num_cpus; mc->max_cpus = sc->num_cpus; + mc->valid_cpu_types = sc->valid_cpu_types; } static void aspeed_machine_class_init(ObjectClass *oc, void *data) diff --git a/hw/arm/aspeed_ast10x0.c b/hw/arm/aspeed_ast10x0.c index dca601a3f9..c3b5116a6a 100644 --- a/hw/arm/aspeed_ast10x0.c +++ b/hw/arm/aspeed_ast10x0.c @@ -417,13 +417,17 @@ static void aspeed_soc_ast1030_realize(DeviceState *dev_soc, Error **errp) static void aspeed_soc_ast1030_class_init(ObjectClass *klass, void *data) { + static const char * const valid_cpu_types[] = { + ARM_CPU_TYPE_NAME("cortex-m4"), /* TODO cortex-m4f */ + NULL + }; DeviceClass *dc = DEVICE_CLASS(klass); AspeedSoCClass *sc = ASPEED_SOC_CLASS(dc); dc->realize = aspeed_soc_ast1030_realize; sc->name = "ast1030-a1"; - sc->cpu_type = ARM_CPU_TYPE_NAME("cortex-m4"); /* TODO cortex-m4f */ + sc->valid_cpu_types = valid_cpu_types; sc->silicon_rev = AST1030_A1_SILICON_REV; sc->sram_size = 0xc0000; sc->secsram_size = 0x40000; /* 256 * KiB */ diff --git a/hw/arm/aspeed_ast2400.c b/hw/arm/aspeed_ast2400.c index 3baf95916d..8829561bb6 100644 --- a/hw/arm/aspeed_ast2400.c +++ b/hw/arm/aspeed_ast2400.c @@ -503,6 +503,10 @@ static void aspeed_ast2400_soc_realize(DeviceState *dev, Error **errp) static void aspeed_soc_ast2400_class_init(ObjectClass *oc, void *data) { + static const char * const valid_cpu_types[] = { + ARM_CPU_TYPE_NAME("arm926"), + NULL + }; AspeedSoCClass *sc = ASPEED_SOC_CLASS(oc); DeviceClass *dc = DEVICE_CLASS(oc); @@ -511,7 +515,7 @@ static void aspeed_soc_ast2400_class_init(ObjectClass *oc, void *data) dc->user_creatable = false; sc->name = "ast2400-a1"; - sc->cpu_type = ARM_CPU_TYPE_NAME("arm926"); + sc->valid_cpu_types = valid_cpu_types; sc->silicon_rev = AST2400_A1_SILICON_REV; sc->sram_size = 0x8000; sc->spis_num = 1; @@ -527,6 +531,10 @@ static void aspeed_soc_ast2400_class_init(ObjectClass *oc, void *data) static void aspeed_soc_ast2500_class_init(ObjectClass *oc, void *data) { + static const char * const valid_cpu_types[] = { + ARM_CPU_TYPE_NAME("arm1176"), + NULL + }; AspeedSoCClass *sc = ASPEED_SOC_CLASS(oc); DeviceClass *dc = DEVICE_CLASS(oc); @@ -535,7 +543,7 @@ static void aspeed_soc_ast2500_class_init(ObjectClass *oc, void *data) dc->user_creatable = false; sc->name = "ast2500-a1"; - sc->cpu_type = ARM_CPU_TYPE_NAME("arm1176"); + sc->valid_cpu_types = valid_cpu_types; sc->silicon_rev = AST2500_A1_SILICON_REV; sc->sram_size = 0x9000; sc->spis_num = 2; diff --git a/hw/arm/aspeed_ast2600.c b/hw/arm/aspeed_ast2600.c index b264433cf0..46baba0e41 100644 --- a/hw/arm/aspeed_ast2600.c +++ b/hw/arm/aspeed_ast2600.c @@ -629,13 +629,17 @@ static void aspeed_soc_ast2600_realize(DeviceState *dev, Error **errp) static void aspeed_soc_ast2600_class_init(ObjectClass *oc, void *data) { + static const char * const valid_cpu_types[] = { + ARM_CPU_TYPE_NAME("cortex-a7"), + NULL + }; DeviceClass *dc = DEVICE_CLASS(oc); AspeedSoCClass *sc = ASPEED_SOC_CLASS(oc); dc->realize = aspeed_soc_ast2600_realize; sc->name = "ast2600-a3"; - sc->cpu_type = ARM_CPU_TYPE_NAME("cortex-a7"); + sc->valid_cpu_types = valid_cpu_types; sc->silicon_rev = AST2600_A3_SILICON_REV; sc->sram_size = 0x16400; sc->spis_num = 2; diff --git a/hw/arm/aspeed_soc_common.c b/hw/arm/aspeed_soc_common.c index 36ca189ce9..123a0c432c 100644 --- a/hw/arm/aspeed_soc_common.c +++ b/hw/arm/aspeed_soc_common.c @@ -20,7 +20,10 @@ const char *aspeed_soc_cpu_type(AspeedSoCClass *sc) { - return sc->cpu_type; + assert(sc->valid_cpu_types); + assert(sc->valid_cpu_types[0]); + assert(!sc->valid_cpu_types[1]); + return sc->valid_cpu_types[0]; } qemu_irq aspeed_soc_get_irq(AspeedSoCState *s, int dev) diff --git a/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h index a060a59918..0db5a41e71 100644 --- a/include/hw/arm/aspeed_soc.h +++ b/include/hw/arm/aspeed_soc.h @@ -128,7 +128,8 @@ struct AspeedSoCClass { DeviceClass parent_class; const char *name; - const char *cpu_type; + /** valid_cpu_types: NULL terminated array of a single CPU type. */ + const char * const *valid_cpu_types; uint32_t silicon_rev; uint64_t sram_size; uint64_t secsram_size; -- cgit 1.4.1 From 3fd941f3f10da2d3c08cac4f183b76b2388b7c53 Mon Sep 17 00:00:00 2001 From: Ninad Palsule Date: Fri, 26 Jan 2024 04:49:53 -0600 Subject: hw/arm: Hook up FSI module in AST2600 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patchset introduces IBM's Flexible Service Interface(FSI). Time for some fun with inter-processor buses. FSI allows a service processor access to the internal buses of a host POWER processor to perform configuration or debugging. FSI has long existed in POWER processes and so comes with some baggage, including how it has been integrated into the ASPEED SoC. Working backwards from the POWER processor, the fundamental pieces of interest for the implementation are: 1. The Common FRU Access Macro (CFAM), an address space containing various "engines" that drive accesses on buses internal and external to the POWER chip. Examples include the SBEFIFO and I2C masters. The engines hang off of an internal Local Bus (LBUS) which is described by the CFAM configuration block. 2. The FSI slave: The slave is the terminal point of the FSI bus for FSI symbols addressed to it. Slaves can be cascaded off of one another. The slave's configuration registers appear in address space of the CFAM to which it is attached. 3. The FSI master: A controller in the platform service processor (e.g. BMC) driving CFAM engine accesses into the POWER chip. At the hardware level FSI is a bit-based protocol supporting synchronous and DMA-driven accesses of engines in a CFAM. 4. The On-Chip Peripheral Bus (OPB): A low-speed bus typically found in POWER processors. This now makes an appearance in the ASPEED SoC due to tight integration of the FSI master IP with the OPB, mainly the existence of an MMIO-mapping of the CFAM address straight onto a sub-region of the OPB address space. 5. An APB-to-OPB bridge enabling access to the OPB from the ARM core in the AST2600. Hardware limitations prevent the OPB from being directly mapped into APB, so all accesses are indirect through the bridge. The implementation appears as following in the qemu device tree: (qemu) info qtree bus: main-system-bus type System ... dev: aspeed.apb2opb, id "" gpio-out "sysbus-irq" 1 mmio 000000001e79b000/0000000000001000 bus: opb.1 type opb dev: fsi.master, id "" bus: fsi.bus.1 type fsi.bus dev: cfam.config, id "" dev: cfam, id "" bus: fsi.lbus.1 type lbus dev: scratchpad, id "" address = 0 (0x0) bus: opb.0 type opb dev: fsi.master, id "" bus: fsi.bus.0 type fsi.bus dev: cfam.config, id "" dev: cfam, id "" bus: fsi.lbus.0 type lbus dev: scratchpad, id "" address = 0 (0x0) The LBUS is modelled to maintain the qdev bus hierarchy and to take advantage of the object model to automatically generate the CFAM configuration block. The configuration block presents engines in the order they are attached to the CFAM's LBUS. Engine implementations should subclass the LBusDevice and set the 'config' member of LBusDeviceClass to match the engine's type. CFAM designs offer a lot of flexibility, for instance it is possible for a CFAM to be simultaneously driven from multiple FSI links. The modeling is not so complete; it's assumed that each CFAM is attached to a single FSI slave (as a consequence the CFAM subclasses the FSI slave). As for FSI, its symbols and wire-protocol are not modelled at all. This is not necessary to get FSI off the ground thanks to the mapping of the CFAM address space onto the OPB address space - the models follow this directly and map the CFAM memory region into the OPB's memory region. Future work includes supporting more advanced accesses that drive the FSI master directly rather than indirectly via the CFAM mapping, which will require implementing the FSI state machine and methods for each of the FSI symbols on the slave. Further down the track we can also look at supporting the bitbanged SoftFSI drivers in Linux by extending the FSI slave model to resolve sequences of GPIO IRQs into FSI symbols, and calling the associated symbol method on the slave to map the access onto the CFAM. Testing: Tested by reading cfam config address 0 on rainier machine type. root@p10bmc:~# pdbg -a getcfam 0x0 p0: 0x0 = 0xc0022d15 Signed-off-by: Andrew Jeffery Signed-off-by: Ninad Palsule Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Cédric Le Goater Signed-off-by: Cédric Le Goater --- hw/arm/aspeed_ast2600.c | 19 +++++++++++++++++++ include/hw/arm/aspeed_soc.h | 4 ++++ 2 files changed, 23 insertions(+) (limited to 'hw/arm/aspeed_ast2600.c') diff --git a/hw/arm/aspeed_ast2600.c b/hw/arm/aspeed_ast2600.c index 46baba0e41..4ee32ea99d 100644 --- a/hw/arm/aspeed_ast2600.c +++ b/hw/arm/aspeed_ast2600.c @@ -76,6 +76,8 @@ static const hwaddr aspeed_soc_ast2600_memmap[] = { [ASPEED_DEV_UART12] = 0x1E790600, [ASPEED_DEV_UART13] = 0x1E790700, [ASPEED_DEV_VUART] = 0x1E787000, + [ASPEED_DEV_FSI1] = 0x1E79B000, + [ASPEED_DEV_FSI2] = 0x1E79B100, [ASPEED_DEV_I3C] = 0x1E7A0000, [ASPEED_DEV_SDRAM] = 0x80000000, }; @@ -133,6 +135,8 @@ static const int aspeed_soc_ast2600_irqmap[] = { [ASPEED_DEV_ETH4] = 33, [ASPEED_DEV_KCS] = 138, /* 138 -> 142 */ [ASPEED_DEV_DP] = 62, + [ASPEED_DEV_FSI1] = 100, + [ASPEED_DEV_FSI2] = 101, [ASPEED_DEV_I3C] = 102, /* 102 -> 107 */ }; @@ -266,6 +270,10 @@ static void aspeed_soc_ast2600_init(Object *obj) object_initialize_child(obj, "emmc-boot-controller", &s->emmc_boot_controller, TYPE_UNIMPLEMENTED_DEVICE); + + for (i = 0; i < ASPEED_FSI_NUM; i++) { + object_initialize_child(obj, "fsi[*]", &s->fsi[i], TYPE_ASPEED_APB2OPB); + } } /* @@ -625,6 +633,17 @@ static void aspeed_soc_ast2600_realize(DeviceState *dev, Error **errp) return; } aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->sbc), 0, sc->memmap[ASPEED_DEV_SBC]); + + /* FSI */ + for (i = 0; i < ASPEED_FSI_NUM; i++) { + if (!sysbus_realize(SYS_BUS_DEVICE(&s->fsi[i]), errp)) { + return; + } + aspeed_mmio_map(s, SYS_BUS_DEVICE(&s->fsi[i]), 0, + sc->memmap[ASPEED_DEV_FSI1 + i]); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->fsi[i]), 0, + aspeed_soc_get_irq(s, ASPEED_DEV_FSI1 + i)); + } } static void aspeed_soc_ast2600_class_init(ObjectClass *oc, void *data) diff --git a/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h index 0db5a41e71..9d0af84a8c 100644 --- a/include/hw/arm/aspeed_soc.h +++ b/include/hw/arm/aspeed_soc.h @@ -36,6 +36,7 @@ #include "hw/misc/aspeed_lpc.h" #include "hw/misc/unimp.h" #include "hw/misc/aspeed_peci.h" +#include "hw/fsi/aspeed_apb2opb.h" #include "hw/char/serial.h" #define ASPEED_SPIS_NUM 2 @@ -90,6 +91,7 @@ struct AspeedSoCState { UnimplementedDeviceState udc; UnimplementedDeviceState sgpiom; UnimplementedDeviceState jtag[ASPEED_JTAG_NUM]; + AspeedAPB2OPBState fsi[2]; }; #define TYPE_ASPEED_SOC "aspeed-soc" @@ -216,6 +218,8 @@ enum { ASPEED_DEV_SGPIOM, ASPEED_DEV_JTAG0, ASPEED_DEV_JTAG1, + ASPEED_DEV_FSI1, + ASPEED_DEV_FSI2, }; #define ASPEED_SOC_SPI_BOOT_ADDR 0x0 -- cgit 1.4.1