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c752bb079b
qemu-e2k/hw/arm/npcm7xx.c
Havard Skinnemoen c752bb079b hw/nvram: NPCM7xx OTP device model 
This supports reading and writing OTP fuses and keys. Only fuse reading
has been tested. Protection is not implemented.

Reviewed-by: Avi Fishman <avi.fishman@nuvoton.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com>
Message-id: 20200911052101.2602693-9-hskinnemoen@google.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-09-14 14:24:59 +01:00

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/*
* Nuvoton NPCM7xx SoC family.
*
* Copyright 2020 Google LLC
*
* 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.
*/
#include "qemu/osdep.h"
#include "exec/address-spaces.h"
#include "hw/arm/boot.h"
#include "hw/arm/npcm7xx.h"
#include "hw/char/serial.h"
#include "hw/loader.h"
#include "hw/misc/unimp.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
#include "qemu/units.h"
#include "sysemu/sysemu.h"
/*
* This covers the whole MMIO space. We'll use this to catch any MMIO accesses
* that aren't handled by any device.
*/
#define NPCM7XX_MMIO_BA (0x80000000)
#define NPCM7XX_MMIO_SZ (0x7ffd0000)
/* OTP key storage and fuse strap array */
#define NPCM7XX_OTP1_BA (0xf0189000)
#define NPCM7XX_OTP2_BA (0xf018a000)
/* Core system modules. */
#define NPCM7XX_L2C_BA (0xf03fc000)
#define NPCM7XX_CPUP_BA (0xf03fe000)
#define NPCM7XX_GCR_BA (0xf0800000)
#define NPCM7XX_CLK_BA (0xf0801000)
/* Internal AHB SRAM */
#define NPCM7XX_RAM3_BA (0xc0008000)
#define NPCM7XX_RAM3_SZ (4 * KiB)
/* Memory blocks at the end of the address space */
#define NPCM7XX_RAM2_BA (0xfffd0000)
#define NPCM7XX_RAM2_SZ (128 * KiB)
#define NPCM7XX_ROM_BA (0xffff0000)
#define NPCM7XX_ROM_SZ (64 * KiB)
/*
* Interrupt lines going into the GIC. This does not include internal Cortex-A9
* interrupts.
*/
enum NPCM7xxInterrupt {
NPCM7XX_UART0_IRQ = 2,
NPCM7XX_UART1_IRQ,
NPCM7XX_UART2_IRQ,
NPCM7XX_UART3_IRQ,
NPCM7XX_TIMER0_IRQ = 32, /* Timer Module 0 */
NPCM7XX_TIMER1_IRQ,
NPCM7XX_TIMER2_IRQ,
NPCM7XX_TIMER3_IRQ,
NPCM7XX_TIMER4_IRQ,
NPCM7XX_TIMER5_IRQ, /* Timer Module 1 */
NPCM7XX_TIMER6_IRQ,
NPCM7XX_TIMER7_IRQ,
NPCM7XX_TIMER8_IRQ,
NPCM7XX_TIMER9_IRQ,
NPCM7XX_TIMER10_IRQ, /* Timer Module 2 */
NPCM7XX_TIMER11_IRQ,
NPCM7XX_TIMER12_IRQ,
NPCM7XX_TIMER13_IRQ,
NPCM7XX_TIMER14_IRQ,
};
/* Total number of GIC interrupts, including internal Cortex-A9 interrupts. */
#define NPCM7XX_NUM_IRQ (160)
/* Register base address for each Timer Module */
static const hwaddr npcm7xx_tim_addr[] = {
0xf0008000,
0xf0009000,
0xf000a000,
};
/* Register base address for each 16550 UART */
static const hwaddr npcm7xx_uart_addr[] = {
0xf0001000,
0xf0002000,
0xf0003000,
0xf0004000,
};
static void npcm7xx_write_secondary_boot(ARMCPU *cpu,
const struct arm_boot_info *info)
{
/*
* The default smpboot stub halts the secondary CPU with a 'wfi'
* instruction, but the arch/arm/mach-npcm/platsmp.c in the Linux kernel
* does not send an IPI to wake it up, so the second CPU fails to boot. So
* we need to provide our own smpboot stub that can not use 'wfi', it has
* to spin the secondary CPU until the first CPU writes to the SCRPAD reg.
*/
uint32_t smpboot[] = {
0xe59f2018, /* ldr r2, bootreg_addr */
0xe3a00000, /* mov r0, #0 */
0xe5820000, /* str r0, [r2] */
0xe320f002, /* wfe */
0xe5921000, /* ldr r1, [r2] */
0xe1110001, /* tst r1, r1 */
0x0afffffb, /* beq <wfe> */
0xe12fff11, /* bx r1 */
NPCM7XX_SMP_BOOTREG_ADDR,
};
int i;
for (i = 0; i < ARRAY_SIZE(smpboot); i++) {
smpboot[i] = tswap32(smpboot[i]);
}
rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot),
NPCM7XX_SMP_LOADER_START);
}
static struct arm_boot_info npcm7xx_binfo = {
.loader_start = NPCM7XX_LOADER_START,
.smp_loader_start = NPCM7XX_SMP_LOADER_START,
.smp_bootreg_addr = NPCM7XX_SMP_BOOTREG_ADDR,
.gic_cpu_if_addr = NPCM7XX_GIC_CPU_IF_ADDR,
.write_secondary_boot = npcm7xx_write_secondary_boot,
.board_id = -1,
};
void npcm7xx_load_kernel(MachineState *machine, NPCM7xxState *soc)
{
NPCM7xxClass *sc = NPCM7XX_GET_CLASS(soc);
npcm7xx_binfo.ram_size = machine->ram_size;
npcm7xx_binfo.nb_cpus = sc->num_cpus;
arm_load_kernel(&soc->cpu[0], machine, &npcm7xx_binfo);
}
static void npcm7xx_init_fuses(NPCM7xxState *s)
{
NPCM7xxClass *nc = NPCM7XX_GET_CLASS(s);
uint32_t value;
/*
* The initial mask of disabled modules indicates the chip derivative (e.g.
* NPCM750 or NPCM730).
*/
value = tswap32(nc->disabled_modules);
npcm7xx_otp_array_write(&s->fuse_array, &value, NPCM7XX_FUSE_DERIVATIVE,
sizeof(value));
}
static qemu_irq npcm7xx_irq(NPCM7xxState *s, int n)
{
return qdev_get_gpio_in(DEVICE(&s->a9mpcore), n);
}
static void npcm7xx_init(Object *obj)
{
NPCM7xxState *s = NPCM7XX(obj);
int i;
for (i = 0; i < NPCM7XX_MAX_NUM_CPUS; i++) {
object_initialize_child(obj, "cpu[*]", &s->cpu[i],
ARM_CPU_TYPE_NAME("cortex-a9"));
}
object_initialize_child(obj, "a9mpcore", &s->a9mpcore, TYPE_A9MPCORE_PRIV);
object_initialize_child(obj, "gcr", &s->gcr, TYPE_NPCM7XX_GCR);
object_property_add_alias(obj, "power-on-straps", OBJECT(&s->gcr),
"power-on-straps");
object_initialize_child(obj, "clk", &s->clk, TYPE_NPCM7XX_CLK);
object_initialize_child(obj, "otp1", &s->key_storage,
TYPE_NPCM7XX_KEY_STORAGE);
object_initialize_child(obj, "otp2", &s->fuse_array,
TYPE_NPCM7XX_FUSE_ARRAY);
for (i = 0; i < ARRAY_SIZE(s->tim); i++) {
object_initialize_child(obj, "tim[*]", &s->tim[i], TYPE_NPCM7XX_TIMER);
}
}
static void npcm7xx_realize(DeviceState *dev, Error **errp)
{
NPCM7xxState *s = NPCM7XX(dev);
NPCM7xxClass *nc = NPCM7XX_GET_CLASS(s);
int i;
if (memory_region_size(s->dram) > NPCM7XX_DRAM_SZ) {
error_setg(errp, "%s: NPCM7xx cannot address more than %" PRIu64
" MiB of DRAM", __func__, NPCM7XX_DRAM_SZ / MiB);
return;
}
/* CPUs */
for (i = 0; i < nc->num_cpus; i++) {
object_property_set_int(OBJECT(&s->cpu[i]), "mp-affinity",
arm_cpu_mp_affinity(i, NPCM7XX_MAX_NUM_CPUS),
&error_abort);
object_property_set_int(OBJECT(&s->cpu[i]), "reset-cbar",
NPCM7XX_GIC_CPU_IF_ADDR, &error_abort);
object_property_set_bool(OBJECT(&s->cpu[i]), "reset-hivecs", true,
&error_abort);
/* Disable security extensions. */
object_property_set_bool(OBJECT(&s->cpu[i]), "has_el3", false,
&error_abort);
if (!qdev_realize(DEVICE(&s->cpu[i]), NULL, errp)) {
return;
}
}
/* A9MPCORE peripherals. Can only fail if we pass bad parameters here. */
object_property_set_int(OBJECT(&s->a9mpcore), "num-cpu", nc->num_cpus,
&error_abort);
object_property_set_int(OBJECT(&s->a9mpcore), "num-irq", NPCM7XX_NUM_IRQ,
&error_abort);
sysbus_realize(SYS_BUS_DEVICE(&s->a9mpcore), &error_abort);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->a9mpcore), 0, NPCM7XX_CPUP_BA);
for (i = 0; i < nc->num_cpus; i++) {
sysbus_connect_irq(SYS_BUS_DEVICE(&s->a9mpcore), i,
qdev_get_gpio_in(DEVICE(&s->cpu[i]), ARM_CPU_IRQ));
sysbus_connect_irq(SYS_BUS_DEVICE(&s->a9mpcore), i + nc->num_cpus,
qdev_get_gpio_in(DEVICE(&s->cpu[i]), ARM_CPU_FIQ));
}
/* L2 cache controller */
sysbus_create_simple("l2x0", NPCM7XX_L2C_BA, NULL);
/* System Global Control Registers (GCR). Can fail due to user input. */
object_property_set_int(OBJECT(&s->gcr), "disabled-modules",
nc->disabled_modules, &error_abort);
object_property_add_const_link(OBJECT(&s->gcr), "dram-mr", OBJECT(s->dram));
if (!sysbus_realize(SYS_BUS_DEVICE(&s->gcr), errp)) {
return;
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->gcr), 0, NPCM7XX_GCR_BA);
/* Clock Control Registers (CLK). Cannot fail. */
sysbus_realize(SYS_BUS_DEVICE(&s->clk), &error_abort);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->clk), 0, NPCM7XX_CLK_BA);
/* OTP key storage and fuse strap array. Cannot fail. */
sysbus_realize(SYS_BUS_DEVICE(&s->key_storage), &error_abort);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->key_storage), 0, NPCM7XX_OTP1_BA);
sysbus_realize(SYS_BUS_DEVICE(&s->fuse_array), &error_abort);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->fuse_array), 0, NPCM7XX_OTP2_BA);
npcm7xx_init_fuses(s);
/* Timer Modules (TIM). Cannot fail. */
QEMU_BUILD_BUG_ON(ARRAY_SIZE(npcm7xx_tim_addr) != ARRAY_SIZE(s->tim));
for (i = 0; i < ARRAY_SIZE(s->tim); i++) {
SysBusDevice *sbd = SYS_BUS_DEVICE(&s->tim[i]);
int first_irq;
int j;
sysbus_realize(sbd, &error_abort);
sysbus_mmio_map(sbd, 0, npcm7xx_tim_addr[i]);
first_irq = NPCM7XX_TIMER0_IRQ + i * NPCM7XX_TIMERS_PER_CTRL;
for (j = 0; j < NPCM7XX_TIMERS_PER_CTRL; j++) {
qemu_irq irq = npcm7xx_irq(s, first_irq + j);
sysbus_connect_irq(sbd, j, irq);
}
}
/* UART0..3 (16550 compatible) */
for (i = 0; i < ARRAY_SIZE(npcm7xx_uart_addr); i++) {
serial_mm_init(get_system_memory(), npcm7xx_uart_addr[i], 2,
npcm7xx_irq(s, NPCM7XX_UART0_IRQ + i), 115200,
serial_hd(i), DEVICE_LITTLE_ENDIAN);
}
/* RAM2 (SRAM) */
memory_region_init_ram(&s->sram, OBJECT(dev), "ram2",
NPCM7XX_RAM2_SZ, &error_abort);
memory_region_add_subregion(get_system_memory(), NPCM7XX_RAM2_BA, &s->sram);
/* RAM3 (SRAM) */
memory_region_init_ram(&s->ram3, OBJECT(dev), "ram3",
NPCM7XX_RAM3_SZ, &error_abort);
memory_region_add_subregion(get_system_memory(), NPCM7XX_RAM3_BA, &s->ram3);
/* Internal ROM */
memory_region_init_rom(&s->irom, OBJECT(dev), "irom", NPCM7XX_ROM_SZ,
&error_abort);
memory_region_add_subregion(get_system_memory(), NPCM7XX_ROM_BA, &s->irom);
create_unimplemented_device("npcm7xx.shm", 0xc0001000, 4 * KiB);
create_unimplemented_device("npcm7xx.vdmx", 0xe0800000, 4 * KiB);
create_unimplemented_device("npcm7xx.pcierc", 0xe1000000, 64 * KiB);
create_unimplemented_device("npcm7xx.kcs", 0xf0007000, 4 * KiB);
create_unimplemented_device("npcm7xx.rng", 0xf000b000, 4 * KiB);
create_unimplemented_device("npcm7xx.adc", 0xf000c000, 4 * KiB);
create_unimplemented_device("npcm7xx.gfxi", 0xf000e000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[0]", 0xf0010000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[1]", 0xf0011000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[2]", 0xf0012000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[3]", 0xf0013000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[4]", 0xf0014000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[5]", 0xf0015000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[6]", 0xf0016000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[7]", 0xf0017000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[0]", 0xf0080000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[1]", 0xf0081000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[2]", 0xf0082000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[3]", 0xf0083000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[4]", 0xf0084000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[5]", 0xf0085000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[6]", 0xf0086000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[7]", 0xf0087000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[8]", 0xf0088000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[9]", 0xf0089000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[10]", 0xf008a000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[11]", 0xf008b000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[12]", 0xf008c000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[13]", 0xf008d000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[14]", 0xf008e000, 4 * KiB);
create_unimplemented_device("npcm7xx.smbus[15]", 0xf008f000, 4 * KiB);
create_unimplemented_device("npcm7xx.espi", 0xf009f000, 4 * KiB);
create_unimplemented_device("npcm7xx.peci", 0xf0100000, 4 * KiB);
create_unimplemented_device("npcm7xx.siox[1]", 0xf0101000, 4 * KiB);
create_unimplemented_device("npcm7xx.siox[2]", 0xf0102000, 4 * KiB);
create_unimplemented_device("npcm7xx.pwm[0]", 0xf0103000, 4 * KiB);
create_unimplemented_device("npcm7xx.pwm[1]", 0xf0104000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[0]", 0xf0180000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[1]", 0xf0181000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[2]", 0xf0182000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[3]", 0xf0183000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[4]", 0xf0184000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[5]", 0xf0185000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[6]", 0xf0186000, 4 * KiB);
create_unimplemented_device("npcm7xx.mft[7]", 0xf0187000, 4 * KiB);
create_unimplemented_device("npcm7xx.pspi1", 0xf0200000, 4 * KiB);
create_unimplemented_device("npcm7xx.pspi2", 0xf0201000, 4 * KiB);
create_unimplemented_device("npcm7xx.ahbpci", 0xf0400000, 1 * MiB);
create_unimplemented_device("npcm7xx.mcphy", 0xf05f0000, 64 * KiB);
create_unimplemented_device("npcm7xx.gmac1", 0xf0802000, 8 * KiB);
create_unimplemented_device("npcm7xx.gmac2", 0xf0804000, 8 * KiB);
create_unimplemented_device("npcm7xx.ehci", 0xf0806000, 4 * KiB);
create_unimplemented_device("npcm7xx.ohci", 0xf0807000, 4 * KiB);
create_unimplemented_device("npcm7xx.vcd", 0xf0810000, 64 * KiB);
create_unimplemented_device("npcm7xx.ece", 0xf0820000, 8 * KiB);
create_unimplemented_device("npcm7xx.vdma", 0xf0822000, 8 * KiB);
create_unimplemented_device("npcm7xx.emc1", 0xf0825000, 4 * KiB);
create_unimplemented_device("npcm7xx.emc2", 0xf0826000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[0]", 0xf0830000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[1]", 0xf0831000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[2]", 0xf0832000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[3]", 0xf0833000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[4]", 0xf0834000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[5]", 0xf0835000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[6]", 0xf0836000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[7]", 0xf0837000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[8]", 0xf0838000, 4 * KiB);
create_unimplemented_device("npcm7xx.usbd[9]", 0xf0839000, 4 * KiB);
create_unimplemented_device("npcm7xx.sd", 0xf0840000, 8 * KiB);
create_unimplemented_device("npcm7xx.mmc", 0xf0842000, 8 * KiB);
create_unimplemented_device("npcm7xx.pcimbx", 0xf0848000, 512 * KiB);
create_unimplemented_device("npcm7xx.aes", 0xf0858000, 4 * KiB);
create_unimplemented_device("npcm7xx.des", 0xf0859000, 4 * KiB);
create_unimplemented_device("npcm7xx.sha", 0xf085a000, 4 * KiB);
create_unimplemented_device("npcm7xx.secacc", 0xf085b000, 4 * KiB);
create_unimplemented_device("npcm7xx.spixcs0", 0xf8000000, 16 * MiB);
create_unimplemented_device("npcm7xx.spixcs1", 0xf9000000, 16 * MiB);
create_unimplemented_device("npcm7xx.spix", 0xfb001000, 4 * KiB);
}
static Property npcm7xx_properties[] = {
DEFINE_PROP_LINK("dram-mr", NPCM7xxState, dram, TYPE_MEMORY_REGION,
MemoryRegion *),
DEFINE_PROP_END_OF_LIST(),
};
static void npcm7xx_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = npcm7xx_realize;
dc->user_creatable = false;
device_class_set_props(dc, npcm7xx_properties);
}
static void npcm730_class_init(ObjectClass *oc, void *data)
{
NPCM7xxClass *nc = NPCM7XX_CLASS(oc);
/* NPCM730 is optimized for data center use, so no graphics, etc. */
nc->disabled_modules = 0x00300395;
nc->num_cpus = 2;
}
static void npcm750_class_init(ObjectClass *oc, void *data)
{
NPCM7xxClass *nc = NPCM7XX_CLASS(oc);
/* NPCM750 has 2 cores and a full set of peripherals */
nc->disabled_modules = 0x00000000;
nc->num_cpus = 2;
}
static const TypeInfo npcm7xx_soc_types[] = {
{
.name = TYPE_NPCM7XX,
.parent = TYPE_DEVICE,
.instance_size = sizeof(NPCM7xxState),
.instance_init = npcm7xx_init,
.class_size = sizeof(NPCM7xxClass),
.class_init = npcm7xx_class_init,
.abstract = true,
}, {
.name = TYPE_NPCM730,
.parent = TYPE_NPCM7XX,
.class_init = npcm730_class_init,
}, {
.name = TYPE_NPCM750,
.parent = TYPE_NPCM7XX,
.class_init = npcm750_class_init,
},
};
DEFINE_TYPES(npcm7xx_soc_types);
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