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qemu-patch-raspberry4/hw/rx/rx62n.c
Paolo Bonzini ac6dd9b9f3 rx: move BIOS load from MCU to board 
The ROM loader state is global and not part of the MCU, and the
BIOS is in machine->firmware.  So just like the kernel case,
load it in the board.

Due to the ordering between CPU reset and ROM reset, the ROM
has to be registered before the CPU is realized, otherwise
the reset vector is loaded before the ROM is there.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-10 12:15:06 -05:00

315 lines
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/*
* RX62N Microcontroller
*
* Datasheet: RX62N Group, RX621 Group User's Manual: Hardware
* (Rev.1.40 R01UH0033EJ0140)
*
* Copyright (c) 2019 Yoshinori Sato
* Copyright (c) 2020 Philippe Mathieu-Daudé
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 "qapi/error.h"
#include "qemu/error-report.h"
#include "hw/hw.h"
#include "hw/rx/rx62n.h"
#include "hw/loader.h"
#include "hw/sysbus.h"
#include "hw/qdev-properties.h"
#include "sysemu/sysemu.h"
#include "sysemu/qtest.h"
#include "cpu.h"
#include "qom/object.h"
/*
* RX62N Internal Memory
*/
#define RX62N_IRAM_BASE 0x00000000
#define RX62N_DFLASH_BASE 0x00100000
#define RX62N_CFLASH_BASE 0xfff80000
/*
* RX62N Peripheral Address
* See users manual section 5
*/
#define RX62N_ICU_BASE 0x00087000
#define RX62N_TMR_BASE 0x00088200
#define RX62N_CMT_BASE 0x00088000
#define RX62N_SCI_BASE 0x00088240
/*
* RX62N Peripheral IRQ
* See users manual section 11
*/
#define RX62N_TMR_IRQ 174
#define RX62N_CMT_IRQ 28
#define RX62N_SCI_IRQ 214
#define RX62N_XTAL_MIN_HZ (8 * 1000 * 1000)
#define RX62N_XTAL_MAX_HZ (14 * 1000 * 1000)
#define RX62N_PCLK_MAX_HZ (50 * 1000 * 1000)
struct RX62NClass {
/*< private >*/
DeviceClass parent_class;
/*< public >*/
const char *name;
uint64_t ram_size;
uint64_t rom_flash_size;
uint64_t data_flash_size;
};
typedef struct RX62NClass RX62NClass;
DECLARE_CLASS_CHECKERS(RX62NClass, RX62N_MCU,
TYPE_RX62N_MCU)
/*
* IRQ -> IPR mapping table
* 0x00 - 0x91: IPR no (IPR00 to IPR91)
* 0xff: IPR not assigned
* See "11.3.1 Interrupt Vector Table" in hardware manual.
*/
static const uint8_t ipr_table[NR_IRQS] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 15 */
0x00, 0xff, 0xff, 0xff, 0xff, 0x01, 0xff, 0x02,
0xff, 0xff, 0xff, 0x03, 0x04, 0x05, 0x06, 0x07, /* 31 */
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x14, 0x14, 0x14, /* 47 */
0x15, 0x15, 0x15, 0x15, 0xff, 0xff, 0xff, 0xff,
0x18, 0x18, 0x18, 0x18, 0x18, 0x1d, 0x1e, 0x1f, /* 63 */
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* 79 */
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x3a, 0x3b, 0x3c, 0xff, 0xff, 0xff, /* 95 */
0x40, 0xff, 0x44, 0x45, 0xff, 0xff, 0x48, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 111 */
0xff, 0xff, 0x51, 0x51, 0x51, 0x51, 0x52, 0x52,
0x52, 0x53, 0x53, 0x54, 0x54, 0x55, 0x55, 0x56, /* 127 */
0x56, 0x57, 0x57, 0x57, 0x57, 0x58, 0x59, 0x59,
0x59, 0x59, 0x5a, 0x5b, 0x5b, 0x5b, 0x5c, 0x5c, /* 143 */
0x5c, 0x5c, 0x5d, 0x5d, 0x5d, 0x5e, 0x5e, 0x5f,
0x5f, 0x60, 0x60, 0x61, 0x61, 0x62, 0x62, 0x62, /* 159 */
0x62, 0x63, 0x64, 0x64, 0x64, 0x64, 0x65, 0x66,
0x66, 0x66, 0x67, 0x67, 0x67, 0x67, 0x68, 0x68, /* 175 */
0x68, 0x69, 0x69, 0x69, 0x6a, 0x6a, 0x6a, 0x6b,
0x6b, 0x6b, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 191 */
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x70, 0x71,
0x72, 0x73, 0x74, 0x75, 0xff, 0xff, 0xff, 0xff, /* 207 */
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x80,
0x80, 0x80, 0x81, 0x81, 0x81, 0x81, 0x82, 0x82, /* 223 */
0x82, 0x82, 0x83, 0x83, 0x83, 0x83, 0xff, 0xff,
0xff, 0xff, 0x85, 0x85, 0x85, 0x85, 0x86, 0x86, /* 239 */
0x86, 0x86, 0xff, 0xff, 0xff, 0xff, 0x88, 0x89,
0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, /* 255 */
};
/*
* Level triggerd IRQ list
* Not listed IRQ is Edge trigger.
* See "11.3.1 Interrupt Vector Table" in hardware manual.
*/
static const uint8_t levelirq[] = {
16, 21, 32, 44, 47, 48, 51, 64, 65, 66,
67, 68, 69, 70, 71, 72, 73, 74, 75, 76,
77, 78, 79, 90, 91, 170, 171, 172, 173, 214,
217, 218, 221, 222, 225, 226, 229, 234, 237, 238,
241, 246, 249, 250, 253,
};
static void register_icu(RX62NState *s)
{
int i;
SysBusDevice *icu;
object_initialize_child(OBJECT(s), "icu", &s->icu, TYPE_RX_ICU);
icu = SYS_BUS_DEVICE(&s->icu);
qdev_prop_set_uint32(DEVICE(icu), "len-ipr-map", NR_IRQS);
for (i = 0; i < NR_IRQS; i++) {
char propname[32];
snprintf(propname, sizeof(propname), "ipr-map[%d]", i);
qdev_prop_set_uint32(DEVICE(icu), propname, ipr_table[i]);
}
qdev_prop_set_uint32(DEVICE(icu), "len-trigger-level",
ARRAY_SIZE(levelirq));
for (i = 0; i < ARRAY_SIZE(levelirq); i++) {
char propname[32];
snprintf(propname, sizeof(propname), "trigger-level[%d]", i);
qdev_prop_set_uint32(DEVICE(icu), propname, levelirq[i]);
}
for (i = 0; i < NR_IRQS; i++) {
s->irq[i] = qdev_get_gpio_in(DEVICE(icu), i);
}
sysbus_realize(icu, &error_abort);
sysbus_connect_irq(icu, 0, qdev_get_gpio_in(DEVICE(&s->cpu), RX_CPU_IRQ));
sysbus_connect_irq(icu, 1, qdev_get_gpio_in(DEVICE(&s->cpu), RX_CPU_FIR));
sysbus_connect_irq(icu, 2, s->irq[SWI]);
sysbus_mmio_map(SYS_BUS_DEVICE(icu), 0, RX62N_ICU_BASE);
}
static void register_tmr(RX62NState *s, int unit)
{
SysBusDevice *tmr;
int i, irqbase;
object_initialize_child(OBJECT(s), "tmr[*]",
&s->tmr[unit], TYPE_RENESAS_TMR);
tmr = SYS_BUS_DEVICE(&s->tmr[unit]);
qdev_prop_set_uint64(DEVICE(tmr), "input-freq", s->pclk_freq_hz);
sysbus_realize(tmr, &error_abort);
irqbase = RX62N_TMR_IRQ + TMR_NR_IRQ * unit;
for (i = 0; i < TMR_NR_IRQ; i++) {
sysbus_connect_irq(tmr, i, s->irq[irqbase + i]);
}
sysbus_mmio_map(tmr, 0, RX62N_TMR_BASE + unit * 0x10);
}
static void register_cmt(RX62NState *s, int unit)
{
SysBusDevice *cmt;
int i, irqbase;
object_initialize_child(OBJECT(s), "cmt[*]",
&s->cmt[unit], TYPE_RENESAS_CMT);
cmt = SYS_BUS_DEVICE(&s->cmt[unit]);
qdev_prop_set_uint64(DEVICE(cmt), "input-freq", s->pclk_freq_hz);
sysbus_realize(cmt, &error_abort);
irqbase = RX62N_CMT_IRQ + CMT_NR_IRQ * unit;
for (i = 0; i < CMT_NR_IRQ; i++) {
sysbus_connect_irq(cmt, i, s->irq[irqbase + i]);
}
sysbus_mmio_map(cmt, 0, RX62N_CMT_BASE + unit * 0x10);
}
static void register_sci(RX62NState *s, int unit)
{
SysBusDevice *sci;
int i, irqbase;
object_initialize_child(OBJECT(s), "sci[*]",
&s->sci[unit], TYPE_RENESAS_SCI);
sci = SYS_BUS_DEVICE(&s->sci[unit]);
qdev_prop_set_chr(DEVICE(sci), "chardev", serial_hd(unit));
qdev_prop_set_uint64(DEVICE(sci), "input-freq", s->pclk_freq_hz);
sysbus_realize(sci, &error_abort);
irqbase = RX62N_SCI_IRQ + SCI_NR_IRQ * unit;
for (i = 0; i < SCI_NR_IRQ; i++) {
sysbus_connect_irq(sci, i, s->irq[irqbase + i]);
}
sysbus_mmio_map(sci, 0, RX62N_SCI_BASE + unit * 0x08);
}
static void rx62n_realize(DeviceState *dev, Error **errp)
{
RX62NState *s = RX62N_MCU(dev);
RX62NClass *rxc = RX62N_MCU_GET_CLASS(dev);
if (s->xtal_freq_hz == 0) {
error_setg(errp, "\"xtal-frequency-hz\" property must be provided.");
return;
}
/* XTAL range: 8-14 MHz */
if (s->xtal_freq_hz < RX62N_XTAL_MIN_HZ
|| s->xtal_freq_hz > RX62N_XTAL_MAX_HZ) {
error_setg(errp, "\"xtal-frequency-hz\" property in incorrect range.");
return;
}
/* Use a 4x fixed multiplier */
s->pclk_freq_hz = 4 * s->xtal_freq_hz;
/* PCLK range: 8-50 MHz */
assert(s->pclk_freq_hz <= RX62N_PCLK_MAX_HZ);
memory_region_init_ram(&s->iram, OBJECT(dev), "iram",
rxc->ram_size, &error_abort);
memory_region_add_subregion(s->sysmem, RX62N_IRAM_BASE, &s->iram);
memory_region_init_rom(&s->d_flash, OBJECT(dev), "flash-data",
rxc->data_flash_size, &error_abort);
memory_region_add_subregion(s->sysmem, RX62N_DFLASH_BASE, &s->d_flash);
memory_region_init_rom(&s->c_flash, OBJECT(dev), "flash-code",
rxc->rom_flash_size, &error_abort);
memory_region_add_subregion(s->sysmem, RX62N_CFLASH_BASE, &s->c_flash);
/* Initialize CPU */
object_initialize_child(OBJECT(s), "cpu", &s->cpu, TYPE_RX62N_CPU);
qdev_realize(DEVICE(&s->cpu), NULL, &error_abort);
register_icu(s);
s->cpu.env.ack = qdev_get_gpio_in_named(DEVICE(&s->icu), "ack", 0);
register_tmr(s, 0);
register_tmr(s, 1);
register_cmt(s, 0);
register_cmt(s, 1);
register_sci(s, 0);
}
static Property rx62n_properties[] = {
DEFINE_PROP_LINK("main-bus", RX62NState, sysmem, TYPE_MEMORY_REGION,
MemoryRegion *),
DEFINE_PROP_BOOL("load-kernel", RX62NState, kernel, false),
DEFINE_PROP_UINT32("xtal-frequency-hz", RX62NState, xtal_freq_hz, 0),
DEFINE_PROP_END_OF_LIST(),
};
static void rx62n_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = rx62n_realize;
device_class_set_props(dc, rx62n_properties);
}
static void r5f562n7_class_init(ObjectClass *oc, void *data)
{
RX62NClass *rxc = RX62N_MCU_CLASS(oc);
rxc->ram_size = 64 * KiB;
rxc->rom_flash_size = 384 * KiB;
rxc->data_flash_size = 32 * KiB;
};
static void r5f562n8_class_init(ObjectClass *oc, void *data)
{
RX62NClass *rxc = RX62N_MCU_CLASS(oc);
rxc->ram_size = 96 * KiB;
rxc->rom_flash_size = 512 * KiB;
rxc->data_flash_size = 32 * KiB;
};
static const TypeInfo rx62n_types[] = {
{
.name = TYPE_R5F562N7_MCU,
.parent = TYPE_RX62N_MCU,
.class_init = r5f562n7_class_init,
}, {
.name = TYPE_R5F562N8_MCU,
.parent = TYPE_RX62N_MCU,
.class_init = r5f562n8_class_init,
}, {
.name = TYPE_RX62N_MCU,
.parent = TYPE_DEVICE,
.instance_size = sizeof(RX62NState),
.class_size = sizeof(RX62NClass),
.class_init = rx62n_class_init,
.abstract = true,
}
};
DEFINE_TYPES(rx62n_types)
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