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qemu-patch-raspberry4/hw/arm/allwinner-h3.c
Niek Linnenbank a80beb160d hw/arm/allwinner-h3: add Boot ROM support 
A real Allwinner H3 SoC contains a Boot ROM which is the
first code that runs right after the SoC is powered on.
The Boot ROM is responsible for loading user code (e.g. a bootloader)
from any of the supported external devices and writing the downloaded
code to internal SRAM. After loading the SoC begins executing the code
written to SRAM.

This commits adds emulation of the Boot ROM firmware setup functionality
by loading user code from SD card in the A1 SRAM. While the A1 SRAM is
64KiB, we limit the size to 32KiB because the real H3 Boot ROM also rejects
sizes larger than 32KiB. For reference, this behaviour is documented
by the Linux Sunxi project wiki at:

  https://linux-sunxi.org/BROM#U-Boot_SPL_limitations

Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20200311221854.30370-11-nieklinnenbank@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-03-12 16:27:33 +00:00

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/*
* Allwinner H3 System on Chip emulation
*
* Copyright (C) 2019 Niek Linnenbank <nieklinnenbank@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "exec/address-spaces.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qemu/units.h"
#include "hw/qdev-core.h"
#include "cpu.h"
#include "hw/sysbus.h"
#include "hw/char/serial.h"
#include "hw/misc/unimp.h"
#include "hw/usb/hcd-ehci.h"
#include "hw/loader.h"
#include "sysemu/sysemu.h"
#include "hw/arm/allwinner-h3.h"
/* Memory map */
const hwaddr allwinner_h3_memmap[] = {
[AW_H3_SRAM_A1] = 0x00000000,
[AW_H3_SRAM_A2] = 0x00044000,
[AW_H3_SRAM_C] = 0x00010000,
[AW_H3_SYSCTRL] = 0x01c00000,
[AW_H3_MMC0] = 0x01c0f000,
[AW_H3_SID] = 0x01c14000,
[AW_H3_EHCI0] = 0x01c1a000,
[AW_H3_OHCI0] = 0x01c1a400,
[AW_H3_EHCI1] = 0x01c1b000,
[AW_H3_OHCI1] = 0x01c1b400,
[AW_H3_EHCI2] = 0x01c1c000,
[AW_H3_OHCI2] = 0x01c1c400,
[AW_H3_EHCI3] = 0x01c1d000,
[AW_H3_OHCI3] = 0x01c1d400,
[AW_H3_CCU] = 0x01c20000,
[AW_H3_PIT] = 0x01c20c00,
[AW_H3_UART0] = 0x01c28000,
[AW_H3_UART1] = 0x01c28400,
[AW_H3_UART2] = 0x01c28800,
[AW_H3_UART3] = 0x01c28c00,
[AW_H3_EMAC] = 0x01c30000,
[AW_H3_GIC_DIST] = 0x01c81000,
[AW_H3_GIC_CPU] = 0x01c82000,
[AW_H3_GIC_HYP] = 0x01c84000,
[AW_H3_GIC_VCPU] = 0x01c86000,
[AW_H3_CPUCFG] = 0x01f01c00,
[AW_H3_SDRAM] = 0x40000000
};
/* List of unimplemented devices */
struct AwH3Unimplemented {
const char *device_name;
hwaddr base;
hwaddr size;
} unimplemented[] = {
{ "d-engine", 0x01000000, 4 * MiB },
{ "d-inter", 0x01400000, 128 * KiB },
{ "dma", 0x01c02000, 4 * KiB },
{ "nfdc", 0x01c03000, 4 * KiB },
{ "ts", 0x01c06000, 4 * KiB },
{ "keymem", 0x01c0b000, 4 * KiB },
{ "lcd0", 0x01c0c000, 4 * KiB },
{ "lcd1", 0x01c0d000, 4 * KiB },
{ "ve", 0x01c0e000, 4 * KiB },
{ "mmc1", 0x01c10000, 4 * KiB },
{ "mmc2", 0x01c11000, 4 * KiB },
{ "crypto", 0x01c15000, 4 * KiB },
{ "msgbox", 0x01c17000, 4 * KiB },
{ "spinlock", 0x01c18000, 4 * KiB },
{ "usb0-otg", 0x01c19000, 4 * KiB },
{ "usb0-phy", 0x01c1a000, 4 * KiB },
{ "usb1-phy", 0x01c1b000, 4 * KiB },
{ "usb2-phy", 0x01c1c000, 4 * KiB },
{ "usb3-phy", 0x01c1d000, 4 * KiB },
{ "smc", 0x01c1e000, 4 * KiB },
{ "pio", 0x01c20800, 1 * KiB },
{ "owa", 0x01c21000, 1 * KiB },
{ "pwm", 0x01c21400, 1 * KiB },
{ "keyadc", 0x01c21800, 1 * KiB },
{ "pcm0", 0x01c22000, 1 * KiB },
{ "pcm1", 0x01c22400, 1 * KiB },
{ "pcm2", 0x01c22800, 1 * KiB },
{ "audio", 0x01c22c00, 2 * KiB },
{ "smta", 0x01c23400, 1 * KiB },
{ "ths", 0x01c25000, 1 * KiB },
{ "uart0", 0x01c28000, 1 * KiB },
{ "uart1", 0x01c28400, 1 * KiB },
{ "uart2", 0x01c28800, 1 * KiB },
{ "uart3", 0x01c28c00, 1 * KiB },
{ "twi0", 0x01c2ac00, 1 * KiB },
{ "twi1", 0x01c2b000, 1 * KiB },
{ "twi2", 0x01c2b400, 1 * KiB },
{ "scr", 0x01c2c400, 1 * KiB },
{ "gpu", 0x01c40000, 64 * KiB },
{ "hstmr", 0x01c60000, 4 * KiB },
{ "dramcom", 0x01c62000, 4 * KiB },
{ "dramctl0", 0x01c63000, 4 * KiB },
{ "dramphy0", 0x01c65000, 4 * KiB },
{ "spi0", 0x01c68000, 4 * KiB },
{ "spi1", 0x01c69000, 4 * KiB },
{ "csi", 0x01cb0000, 320 * KiB },
{ "tve", 0x01e00000, 64 * KiB },
{ "hdmi", 0x01ee0000, 128 * KiB },
{ "rtc", 0x01f00000, 1 * KiB },
{ "r_timer", 0x01f00800, 1 * KiB },
{ "r_intc", 0x01f00c00, 1 * KiB },
{ "r_wdog", 0x01f01000, 1 * KiB },
{ "r_prcm", 0x01f01400, 1 * KiB },
{ "r_twd", 0x01f01800, 1 * KiB },
{ "r_cir-rx", 0x01f02000, 1 * KiB },
{ "r_twi", 0x01f02400, 1 * KiB },
{ "r_uart", 0x01f02800, 1 * KiB },
{ "r_pio", 0x01f02c00, 1 * KiB },
{ "r_pwm", 0x01f03800, 1 * KiB },
{ "core-dbg", 0x3f500000, 128 * KiB },
{ "tsgen-ro", 0x3f506000, 4 * KiB },
{ "tsgen-ctl", 0x3f507000, 4 * KiB },
{ "ddr-mem", 0x40000000, 2 * GiB },
{ "n-brom", 0xffff0000, 32 * KiB },
{ "s-brom", 0xffff0000, 64 * KiB }
};
/* Per Processor Interrupts */
enum {
AW_H3_GIC_PPI_MAINT = 9,
AW_H3_GIC_PPI_HYPTIMER = 10,
AW_H3_GIC_PPI_VIRTTIMER = 11,
AW_H3_GIC_PPI_SECTIMER = 13,
AW_H3_GIC_PPI_PHYSTIMER = 14
};
/* Shared Processor Interrupts */
enum {
AW_H3_GIC_SPI_UART0 = 0,
AW_H3_GIC_SPI_UART1 = 1,
AW_H3_GIC_SPI_UART2 = 2,
AW_H3_GIC_SPI_UART3 = 3,
AW_H3_GIC_SPI_TIMER0 = 18,
AW_H3_GIC_SPI_TIMER1 = 19,
AW_H3_GIC_SPI_MMC0 = 60,
AW_H3_GIC_SPI_EHCI0 = 72,
AW_H3_GIC_SPI_OHCI0 = 73,
AW_H3_GIC_SPI_EHCI1 = 74,
AW_H3_GIC_SPI_OHCI1 = 75,
AW_H3_GIC_SPI_EHCI2 = 76,
AW_H3_GIC_SPI_OHCI2 = 77,
AW_H3_GIC_SPI_EHCI3 = 78,
AW_H3_GIC_SPI_OHCI3 = 79,
AW_H3_GIC_SPI_EMAC = 82
};
/* Allwinner H3 general constants */
enum {
AW_H3_GIC_NUM_SPI = 128
};
void allwinner_h3_bootrom_setup(AwH3State *s, BlockBackend *blk)
{
const int64_t rom_size = 32 * KiB;
g_autofree uint8_t *buffer = g_new0(uint8_t, rom_size);
if (blk_pread(blk, 8 * KiB, buffer, rom_size) < 0) {
error_setg(&error_fatal, "%s: failed to read BlockBackend data",
__func__);
return;
}
rom_add_blob("allwinner-h3.bootrom", buffer, rom_size,
rom_size, s->memmap[AW_H3_SRAM_A1],
NULL, NULL, NULL, NULL, false);
}
static void allwinner_h3_init(Object *obj)
{
AwH3State *s = AW_H3(obj);
s->memmap = allwinner_h3_memmap;
for (int i = 0; i < AW_H3_NUM_CPUS; i++) {
object_initialize_child(obj, "cpu[*]", &s->cpus[i], sizeof(s->cpus[i]),
ARM_CPU_TYPE_NAME("cortex-a7"),
&error_abort, NULL);
}
sysbus_init_child_obj(obj, "gic", &s->gic, sizeof(s->gic),
TYPE_ARM_GIC);
sysbus_init_child_obj(obj, "timer", &s->timer, sizeof(s->timer),
TYPE_AW_A10_PIT);
object_property_add_alias(obj, "clk0-freq", OBJECT(&s->timer),
"clk0-freq", &error_abort);
object_property_add_alias(obj, "clk1-freq", OBJECT(&s->timer),
"clk1-freq", &error_abort);
sysbus_init_child_obj(obj, "ccu", &s->ccu, sizeof(s->ccu),
TYPE_AW_H3_CCU);
sysbus_init_child_obj(obj, "sysctrl", &s->sysctrl, sizeof(s->sysctrl),
TYPE_AW_H3_SYSCTRL);
sysbus_init_child_obj(obj, "cpucfg", &s->cpucfg, sizeof(s->cpucfg),
TYPE_AW_CPUCFG);
sysbus_init_child_obj(obj, "sid", &s->sid, sizeof(s->sid),
TYPE_AW_SID);
object_property_add_alias(obj, "identifier", OBJECT(&s->sid),
"identifier", &error_abort);
sysbus_init_child_obj(obj, "mmc0", &s->mmc0, sizeof(s->mmc0),
TYPE_AW_SDHOST_SUN5I);
sysbus_init_child_obj(obj, "emac", &s->emac, sizeof(s->emac),
TYPE_AW_SUN8I_EMAC);
}
static void allwinner_h3_realize(DeviceState *dev, Error **errp)
{
AwH3State *s = AW_H3(dev);
unsigned i;
/* CPUs */
for (i = 0; i < AW_H3_NUM_CPUS; i++) {
/* Provide Power State Coordination Interface */
qdev_prop_set_int32(DEVICE(&s->cpus[i]), "psci-conduit",
QEMU_PSCI_CONDUIT_HVC);
/* Disable secondary CPUs */
qdev_prop_set_bit(DEVICE(&s->cpus[i]), "start-powered-off",
i > 0);
/* All exception levels required */
qdev_prop_set_bit(DEVICE(&s->cpus[i]), "has_el3", true);
qdev_prop_set_bit(DEVICE(&s->cpus[i]), "has_el2", true);
/* Mark realized */
qdev_init_nofail(DEVICE(&s->cpus[i]));
}
/* Generic Interrupt Controller */
qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", AW_H3_GIC_NUM_SPI +
GIC_INTERNAL);
qdev_prop_set_uint32(DEVICE(&s->gic), "revision", 2);
qdev_prop_set_uint32(DEVICE(&s->gic), "num-cpu", AW_H3_NUM_CPUS);
qdev_prop_set_bit(DEVICE(&s->gic), "has-security-extensions", false);
qdev_prop_set_bit(DEVICE(&s->gic), "has-virtualization-extensions", true);
qdev_init_nofail(DEVICE(&s->gic));
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 0, s->memmap[AW_H3_GIC_DIST]);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 1, s->memmap[AW_H3_GIC_CPU]);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 2, s->memmap[AW_H3_GIC_HYP]);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gic), 3, s->memmap[AW_H3_GIC_VCPU]);
/*
* Wire the outputs from each CPU's generic timer and the GICv3
* maintenance interrupt signal to the appropriate GIC PPI inputs,
* and the GIC's IRQ/FIQ/VIRQ/VFIQ interrupt outputs to the CPU's inputs.
*/
for (i = 0; i < AW_H3_NUM_CPUS; i++) {
DeviceState *cpudev = DEVICE(&s->cpus[i]);
int ppibase = AW_H3_GIC_NUM_SPI + i * GIC_INTERNAL + GIC_NR_SGIS;
int irq;
/*
* Mapping from the output timer irq lines from the CPU to the
* GIC PPI inputs used for this board.
*/
const int timer_irq[] = {
[GTIMER_PHYS] = AW_H3_GIC_PPI_PHYSTIMER,
[GTIMER_VIRT] = AW_H3_GIC_PPI_VIRTTIMER,
[GTIMER_HYP] = AW_H3_GIC_PPI_HYPTIMER,
[GTIMER_SEC] = AW_H3_GIC_PPI_SECTIMER,
};
/* Connect CPU timer outputs to GIC PPI inputs */
for (irq = 0; irq < ARRAY_SIZE(timer_irq); irq++) {
qdev_connect_gpio_out(cpudev, irq,
qdev_get_gpio_in(DEVICE(&s->gic),
ppibase + timer_irq[irq]));
}
/* Connect GIC outputs to CPU interrupt inputs */
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), i,
qdev_get_gpio_in(cpudev, ARM_CPU_IRQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), i + AW_H3_NUM_CPUS,
qdev_get_gpio_in(cpudev, ARM_CPU_FIQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), i + (2 * AW_H3_NUM_CPUS),
qdev_get_gpio_in(cpudev, ARM_CPU_VIRQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), i + (3 * AW_H3_NUM_CPUS),
qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ));
/* GIC maintenance signal */
sysbus_connect_irq(SYS_BUS_DEVICE(&s->gic), i + (4 * AW_H3_NUM_CPUS),
qdev_get_gpio_in(DEVICE(&s->gic),
ppibase + AW_H3_GIC_PPI_MAINT));
}
/* Timer */
qdev_init_nofail(DEVICE(&s->timer));
sysbus_mmio_map(SYS_BUS_DEVICE(&s->timer), 0, s->memmap[AW_H3_PIT]);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->timer), 0,
qdev_get_gpio_in(DEVICE(&s->gic), AW_H3_GIC_SPI_TIMER0));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->timer), 1,
qdev_get_gpio_in(DEVICE(&s->gic), AW_H3_GIC_SPI_TIMER1));
/* SRAM */
memory_region_init_ram(&s->sram_a1, OBJECT(dev), "sram A1",
64 * KiB, &error_abort);
memory_region_init_ram(&s->sram_a2, OBJECT(dev), "sram A2",
32 * KiB, &error_abort);
memory_region_init_ram(&s->sram_c, OBJECT(dev), "sram C",
44 * KiB, &error_abort);
memory_region_add_subregion(get_system_memory(), s->memmap[AW_H3_SRAM_A1],
&s->sram_a1);
memory_region_add_subregion(get_system_memory(), s->memmap[AW_H3_SRAM_A2],
&s->sram_a2);
memory_region_add_subregion(get_system_memory(), s->memmap[AW_H3_SRAM_C],
&s->sram_c);
/* Clock Control Unit */
qdev_init_nofail(DEVICE(&s->ccu));
sysbus_mmio_map(SYS_BUS_DEVICE(&s->ccu), 0, s->memmap[AW_H3_CCU]);
/* System Control */
qdev_init_nofail(DEVICE(&s->sysctrl));
sysbus_mmio_map(SYS_BUS_DEVICE(&s->sysctrl), 0, s->memmap[AW_H3_SYSCTRL]);
/* CPU Configuration */
qdev_init_nofail(DEVICE(&s->cpucfg));
sysbus_mmio_map(SYS_BUS_DEVICE(&s->cpucfg), 0, s->memmap[AW_H3_CPUCFG]);
/* Security Identifier */
qdev_init_nofail(DEVICE(&s->sid));
sysbus_mmio_map(SYS_BUS_DEVICE(&s->sid), 0, s->memmap[AW_H3_SID]);
/* SD/MMC */
qdev_init_nofail(DEVICE(&s->mmc0));
sysbus_mmio_map(SYS_BUS_DEVICE(&s->mmc0), 0, s->memmap[AW_H3_MMC0]);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->mmc0), 0,
qdev_get_gpio_in(DEVICE(&s->gic), AW_H3_GIC_SPI_MMC0));
object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->mmc0),
"sd-bus", &error_abort);
/* EMAC */
if (nd_table[0].used) {
qemu_check_nic_model(&nd_table[0], TYPE_AW_SUN8I_EMAC);
qdev_set_nic_properties(DEVICE(&s->emac), &nd_table[0]);
}
qdev_init_nofail(DEVICE(&s->emac));
sysbus_mmio_map(SYS_BUS_DEVICE(&s->emac), 0, s->memmap[AW_H3_EMAC]);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->emac), 0,
qdev_get_gpio_in(DEVICE(&s->gic), AW_H3_GIC_SPI_EMAC));
/* Universal Serial Bus */
sysbus_create_simple(TYPE_AW_H3_EHCI, s->memmap[AW_H3_EHCI0],
qdev_get_gpio_in(DEVICE(&s->gic),
AW_H3_GIC_SPI_EHCI0));
sysbus_create_simple(TYPE_AW_H3_EHCI, s->memmap[AW_H3_EHCI1],
qdev_get_gpio_in(DEVICE(&s->gic),
AW_H3_GIC_SPI_EHCI1));
sysbus_create_simple(TYPE_AW_H3_EHCI, s->memmap[AW_H3_EHCI2],
qdev_get_gpio_in(DEVICE(&s->gic),
AW_H3_GIC_SPI_EHCI2));
sysbus_create_simple(TYPE_AW_H3_EHCI, s->memmap[AW_H3_EHCI3],
qdev_get_gpio_in(DEVICE(&s->gic),
AW_H3_GIC_SPI_EHCI3));
sysbus_create_simple("sysbus-ohci", s->memmap[AW_H3_OHCI0],
qdev_get_gpio_in(DEVICE(&s->gic),
AW_H3_GIC_SPI_OHCI0));
sysbus_create_simple("sysbus-ohci", s->memmap[AW_H3_OHCI1],
qdev_get_gpio_in(DEVICE(&s->gic),
AW_H3_GIC_SPI_OHCI1));
sysbus_create_simple("sysbus-ohci", s->memmap[AW_H3_OHCI2],
qdev_get_gpio_in(DEVICE(&s->gic),
AW_H3_GIC_SPI_OHCI2));
sysbus_create_simple("sysbus-ohci", s->memmap[AW_H3_OHCI3],
qdev_get_gpio_in(DEVICE(&s->gic),
AW_H3_GIC_SPI_OHCI3));
/* UART0. For future clocktree API: All UARTS are connected to APB2_CLK. */
serial_mm_init(get_system_memory(), s->memmap[AW_H3_UART0], 2,
qdev_get_gpio_in(DEVICE(&s->gic), AW_H3_GIC_SPI_UART0),
115200, serial_hd(0), DEVICE_NATIVE_ENDIAN);
/* UART1 */
serial_mm_init(get_system_memory(), s->memmap[AW_H3_UART1], 2,
qdev_get_gpio_in(DEVICE(&s->gic), AW_H3_GIC_SPI_UART1),
115200, serial_hd(1), DEVICE_NATIVE_ENDIAN);
/* UART2 */
serial_mm_init(get_system_memory(), s->memmap[AW_H3_UART2], 2,
qdev_get_gpio_in(DEVICE(&s->gic), AW_H3_GIC_SPI_UART2),
115200, serial_hd(2), DEVICE_NATIVE_ENDIAN);
/* UART3 */
serial_mm_init(get_system_memory(), s->memmap[AW_H3_UART3], 2,
qdev_get_gpio_in(DEVICE(&s->gic), AW_H3_GIC_SPI_UART3),
115200, serial_hd(3), DEVICE_NATIVE_ENDIAN);
/* Unimplemented devices */
for (i = 0; i < ARRAY_SIZE(unimplemented); i++) {
create_unimplemented_device(unimplemented[i].device_name,
unimplemented[i].base,
unimplemented[i].size);
}
}
static void allwinner_h3_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = allwinner_h3_realize;
/* Reason: uses serial_hd() in realize function */
dc->user_creatable = false;
}
static const TypeInfo allwinner_h3_type_info = {
.name = TYPE_AW_H3,
.parent = TYPE_DEVICE,
.instance_size = sizeof(AwH3State),
.instance_init = allwinner_h3_init,
.class_init = allwinner_h3_class_init,
};
static void allwinner_h3_register_types(void)
{
type_register_static(&allwinner_h3_type_info);
}
type_init(allwinner_h3_register_types)
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