From 288dc87244c97c8674967c12bb5c8e38fd7d9ff5 Mon Sep 17 00:00:00 2001 From: Luc Michel Date: Fri, 26 Sep 2025 09:07:21 +0200 Subject: [PATCH] hw/arm/xlnx-versal: uart: refactor creation MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Refactor the UARTs creations. The VersalMap struct is now used to describe the SoC and its peripherals. For now it contains the two UARTs mapping information. The creation function now embeds the FDT creation logic as well. The devices are now created dynamically using qdev_new and (qdev|sysbus)_realize_and_unref. This will allow to rely entirely on the VersalMap structure to create the SoC and allow easy addition of new SoCs of the same family (like versal2 coming with next commits). Note that the connection to the CRL is removed for now and will be re-added by next commits. Signed-off-by: Luc Michel Reviewed-by: Francisco Iglesias Reviewed-by: Edgar E. Iglesias Tested-by: Philippe Mathieu-Daudé Message-id: 20250926070806.292065-4-luc.michel@amd.com Signed-off-by: Peter Maydell --- hw/arm/xlnx-versal-virt.c | 36 +-------- hw/arm/xlnx-versal.c | 150 ++++++++++++++++++++++++++++------- include/hw/arm/xlnx-versal.h | 2 - 3 files changed, 122 insertions(+), 66 deletions(-) diff --git a/hw/arm/xlnx-versal-virt.c b/hw/arm/xlnx-versal-virt.c index d1c65afa2a..e1deae1131 100644 --- a/hw/arm/xlnx-versal-virt.c +++ b/hw/arm/xlnx-versal-virt.c @@ -77,6 +77,7 @@ static void fdt_create(VersalVirt *s) s->phandle.dwc = qemu_fdt_alloc_phandle(s->fdt); /* Create /chosen node for load_dtb. */ qemu_fdt_add_subnode(s->fdt, "/chosen"); + qemu_fdt_add_subnode(s->fdt, "/aliases"); /* Header */ qemu_fdt_setprop_cell(s->fdt, "/", "interrupt-parent", s->phandle.gic); @@ -208,40 +209,6 @@ static void fdt_add_usb_xhci_nodes(VersalVirt *s) g_free(name); } -static void fdt_add_uart_nodes(VersalVirt *s) -{ - uint64_t addrs[] = { MM_UART1, MM_UART0 }; - unsigned int irqs[] = { VERSAL_UART1_IRQ_0, VERSAL_UART0_IRQ_0 }; - const char compat[] = "arm,pl011\0arm,sbsa-uart"; - const char clocknames[] = "uartclk\0apb_pclk"; - int i; - - for (i = 0; i < ARRAY_SIZE(addrs); i++) { - char *name = g_strdup_printf("/uart@%" PRIx64, addrs[i]); - qemu_fdt_add_subnode(s->fdt, name); - qemu_fdt_setprop_cell(s->fdt, name, "current-speed", 115200); - qemu_fdt_setprop_cells(s->fdt, name, "clocks", - s->phandle.clk_125Mhz, s->phandle.clk_125Mhz); - qemu_fdt_setprop(s->fdt, name, "clock-names", - clocknames, sizeof(clocknames)); - - qemu_fdt_setprop_cells(s->fdt, name, "interrupts", - GIC_FDT_IRQ_TYPE_SPI, irqs[i], - GIC_FDT_IRQ_FLAGS_LEVEL_HI); - qemu_fdt_setprop_sized_cells(s->fdt, name, "reg", - 2, addrs[i], 2, 0x1000); - qemu_fdt_setprop(s->fdt, name, "compatible", - compat, sizeof(compat)); - qemu_fdt_setprop(s->fdt, name, "u-boot,dm-pre-reloc", NULL, 0); - - if (addrs[i] == MM_UART0) { - /* Select UART0. */ - qemu_fdt_setprop_string(s->fdt, "/chosen", "stdout-path", name); - } - g_free(name); - } -} - static void fdt_add_canfd_nodes(VersalVirt *s) { uint64_t addrs[] = { MM_CANFD1, MM_CANFD0 }; @@ -705,7 +672,6 @@ static void versal_virt_init(MachineState *machine) create_virtio_regions(s); fdt_add_gem_nodes(s); - fdt_add_uart_nodes(s); fdt_add_canfd_nodes(s); fdt_add_gic_nodes(s); fdt_add_timer_nodes(s); diff --git a/hw/arm/xlnx-versal.c b/hw/arm/xlnx-versal.c index 3b59621956..b16af79e8a 100644 --- a/hw/arm/xlnx-versal.c +++ b/hw/arm/xlnx-versal.c @@ -26,6 +26,7 @@ #include "target/arm/gtimer.h" #include "system/device_tree.h" #include "hw/arm/fdt.h" +#include "hw/char/pl011.h" #define XLNX_VERSAL_ACPU_TYPE ARM_CPU_TYPE_NAME("cortex-a72") #define XLNX_VERSAL_RCPU_TYPE ARM_CPU_TYPE_NAME("cortex-r5f") @@ -34,6 +35,83 @@ #define VERSAL_NUM_PMC_APB_IRQS 18 #define NUM_OSPI_IRQ_LINES 3 +typedef struct VersalSimplePeriphMap { + uint64_t addr; + int irq; +} VersalSimplePeriphMap; + +typedef struct VersalMap { + VersalSimplePeriphMap uart[2]; + size_t num_uart; +} VersalMap; + +static const VersalMap VERSAL_MAP = { + .uart[0] = { 0xff000000, 18 }, + .uart[1] = { 0xff010000, 19 }, + .num_uart = 2, +}; + +static const VersalMap *VERSION_TO_MAP[] = { + [VERSAL_VER_VERSAL] = &VERSAL_MAP, +}; + +static inline VersalVersion versal_get_version(Versal *s) +{ + return XLNX_VERSAL_BASE_GET_CLASS(s)->version; +} + +static inline const VersalMap *versal_get_map(Versal *s) +{ + return VERSION_TO_MAP[versal_get_version(s)]; +} + + +static qemu_irq versal_get_irq(Versal *s, int irq_idx) +{ + return qdev_get_gpio_in(DEVICE(&s->fpd.apu.gic), irq_idx); +} + +static void versal_sysbus_connect_irq(Versal *s, SysBusDevice *sbd, + int sbd_idx, int irq_idx) +{ + qemu_irq irq = versal_get_irq(s, irq_idx); + + if (irq == NULL) { + return; + } + + sysbus_connect_irq(sbd, sbd_idx, irq); +} + +static inline char *versal_fdt_add_subnode(Versal *s, const char *path, + uint64_t at, const char *compat, + size_t compat_sz) +{ + char *p; + + p = g_strdup_printf("%s@%" PRIx64, path, at); + qemu_fdt_add_subnode(s->cfg.fdt, p); + + if (!strncmp(compat, "memory", compat_sz)) { + qemu_fdt_setprop(s->cfg.fdt, p, "device_type", compat, compat_sz); + } else { + qemu_fdt_setprop(s->cfg.fdt, p, "compatible", compat, compat_sz); + } + + return p; +} + +static inline char *versal_fdt_add_simple_subnode(Versal *s, const char *path, + uint64_t addr, uint64_t len, + const char *compat, + size_t compat_sz) +{ + char *p = versal_fdt_add_subnode(s, path, addr, compat, compat_sz); + + qemu_fdt_setprop_sized_cells(s->cfg.fdt, p, "reg", 2, addr, 2, len); + return p; +} + static void versal_create_apu_cpus(Versal *s) { int i; @@ -167,28 +245,44 @@ static void versal_create_rpu_cpus(Versal *s) qdev_realize(DEVICE(&s->lpd.rpu.cluster), NULL, &error_fatal); } -static void versal_create_uarts(Versal *s, qemu_irq *pic) +static void versal_create_uart(Versal *s, + const VersalSimplePeriphMap *map, + int chardev_idx) { - int i; - - for (i = 0; i < ARRAY_SIZE(s->lpd.iou.uart); i++) { - static const int irqs[] = { VERSAL_UART0_IRQ_0, VERSAL_UART1_IRQ_0}; - static const uint64_t addrs[] = { MM_UART0, MM_UART1 }; - char *name = g_strdup_printf("uart%d", i); - DeviceState *dev; - MemoryRegion *mr; - - object_initialize_child(OBJECT(s), name, &s->lpd.iou.uart[i], - TYPE_PL011); - dev = DEVICE(&s->lpd.iou.uart[i]); - qdev_prop_set_chr(dev, "chardev", serial_hd(i)); - sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal); - - mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); - memory_region_add_subregion(&s->mr_ps, addrs[i], mr); + DeviceState *dev; + MemoryRegion *mr; + g_autofree char *node; + g_autofree char *alias; + const char compatible[] = "arm,pl011\0arm,sbsa-uart"; + const char clocknames[] = "uartclk\0apb_pclk"; + + dev = qdev_new(TYPE_PL011); + object_property_add_child(OBJECT(s), "uart[*]", OBJECT(dev)); + qdev_prop_set_chr(dev, "chardev", serial_hd(chardev_idx)); + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); - sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[irqs[i]]); - g_free(name); + mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); + memory_region_add_subregion(&s->mr_ps, map->addr, mr); + + versal_sysbus_connect_irq(s, SYS_BUS_DEVICE(dev), 0, map->irq); + + node = versal_fdt_add_simple_subnode(s, "/uart", map->addr, 0x1000, + compatible, sizeof(compatible)); + qemu_fdt_setprop_cell(s->cfg.fdt, node, "current-speed", 115200); + qemu_fdt_setprop_cells(s->cfg.fdt, node, "clocks", + s->phandle.clk_125mhz, s->phandle.clk_125mhz); + qemu_fdt_setprop(s->cfg.fdt, node, "clock-names", clocknames, + sizeof(clocknames)); + qemu_fdt_setprop_cells(s->cfg.fdt, node, "interrupts", + GIC_FDT_IRQ_TYPE_SPI, map->irq, + GIC_FDT_IRQ_FLAGS_LEVEL_HI); + qemu_fdt_setprop(s->cfg.fdt, node, "u-boot,dm-pre-reloc", NULL, 0); + + alias = g_strdup_printf("serial%d", chardev_idx); + qemu_fdt_setprop_string(s->cfg.fdt, "/aliases", alias, node); + + if (chardev_idx == 0) { + qemu_fdt_setprop_string(s->cfg.fdt, "/chosen", "stdout-path", node); } } @@ -783,14 +877,6 @@ static void versal_create_crl(Versal *s, qemu_irq *pic) &error_abort); } - for (i = 0; i < ARRAY_SIZE(s->lpd.iou.uart); i++) { - g_autofree gchar *name = g_strdup_printf("uart[%d]", i); - - object_property_set_link(OBJECT(&s->lpd.crl), - name, OBJECT(&s->lpd.iou.uart[i]), - &error_abort); - } - object_property_set_link(OBJECT(&s->lpd.crl), "usb", OBJECT(&s->lpd.iou.usb), &error_abort); @@ -942,6 +1028,8 @@ static void versal_realize(DeviceState *dev, Error **errp) { Versal *s = XLNX_VERSAL_BASE(dev); qemu_irq pic[XLNX_VERSAL_NR_IRQS]; + const VersalMap *map = versal_get_map(s); + size_t i; g_assert(s->cfg.fdt != NULL); @@ -951,7 +1039,11 @@ static void versal_realize(DeviceState *dev, Error **errp) versal_create_apu_cpus(s); versal_create_apu_gic(s, pic); versal_create_rpu_cpus(s); - versal_create_uarts(s, pic); + + for (i = 0; i < map->num_uart; i++) { + versal_create_uart(s, &map->uart[i], i); + } + versal_create_canfds(s, pic); versal_create_usbs(s, pic); versal_create_gems(s, pic); diff --git a/include/hw/arm/xlnx-versal.h b/include/hw/arm/xlnx-versal.h index f2a62b4355..b01ddeb142 100644 --- a/include/hw/arm/xlnx-versal.h +++ b/include/hw/arm/xlnx-versal.h @@ -18,7 +18,6 @@ #include "hw/or-irq.h" #include "hw/sd/sdhci.h" #include "hw/intc/arm_gicv3.h" -#include "hw/char/pl011.h" #include "hw/dma/xlnx-zdma.h" #include "hw/net/cadence_gem.h" #include "hw/rtc/xlnx-zynqmp-rtc.h" @@ -80,7 +79,6 @@ struct Versal { MemoryRegion mr_ocm; struct { - PL011State uart[XLNX_VERSAL_NR_UARTS]; CadenceGEMState gem[XLNX_VERSAL_NR_GEMS]; OrIRQState gem_irq_orgate[XLNX_VERSAL_NR_GEMS]; XlnxZDMA adma[XLNX_VERSAL_NR_ADMAS]; -- 2.47.3