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zynq_slcr.c
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/
zynq_slcr.c
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/*
* Status and system control registers for Xilinx Zynq Platform
*
* Copyright (c) 2011 Michal Simek <monstr@monstr.eu>
* Copyright (c) 2012 PetaLogix Pty Ltd.
* Based on hw/arm_sysctl.c, written by Paul Brook
*
* 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.
*
* 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 "hw/hw.h"
#include "qemu/timer.h"
#include "hw/sysbus.h"
#include "sysemu/sysemu.h"
#ifndef ZYNQ_SLCR_ERR_DEBUG
#define ZYNQ_SLCR_ERR_DEBUG 0
#endif
#define DB_PRINT(...) do { \
if (ZYNQ_SLCR_ERR_DEBUG) { \
fprintf(stderr, ": %s: ", __func__); \
fprintf(stderr, ## __VA_ARGS__); \
} \
} while (0);
#define XILINX_LOCK_KEY 0x767b
#define XILINX_UNLOCK_KEY 0xdf0d
#define R_PSS_RST_CTRL_SOFT_RST 0x1
enum {
SCL = 0x000 / 4,
LOCK,
UNLOCK,
LOCKSTA,
ARM_PLL_CTRL = 0x100 / 4,
DDR_PLL_CTRL,
IO_PLL_CTRL,
PLL_STATUS,
ARM_PLL_CFG,
DDR_PLL_CFG,
IO_PLL_CFG,
ARM_CLK_CTRL = 0x120 / 4,
DDR_CLK_CTRL,
DCI_CLK_CTRL,
APER_CLK_CTRL,
USB0_CLK_CTRL,
USB1_CLK_CTRL,
GEM0_RCLK_CTRL,
GEM1_RCLK_CTRL,
GEM0_CLK_CTRL,
GEM1_CLK_CTRL,
SMC_CLK_CTRL,
LQSPI_CLK_CTRL,
SDIO_CLK_CTRL,
UART_CLK_CTRL,
SPI_CLK_CTRL,
CAN_CLK_CTRL,
CAN_MIOCLK_CTRL,
DBG_CLK_CTRL,
PCAP_CLK_CTRL,
TOPSW_CLK_CTRL,
#define FPGA_CTRL_REGS(n, start) \
FPGA ## n ## _CLK_CTRL = (start) / 4, \
FPGA ## n ## _THR_CTRL, \
FPGA ## n ## _THR_CNT, \
FPGA ## n ## _THR_STA,
FPGA_CTRL_REGS(0, 0x170)
FPGA_CTRL_REGS(1, 0x180)
FPGA_CTRL_REGS(2, 0x190)
FPGA_CTRL_REGS(3, 0x1a0)
BANDGAP_TRIP = 0x1b8 / 4,
PLL_PREDIVISOR = 0x1c0 / 4,
CLK_621_TRUE,
PSS_RST_CTRL = 0x200 / 4,
DDR_RST_CTRL,
TOPSW_RESET_CTRL,
DMAC_RST_CTRL,
USB_RST_CTRL,
GEM_RST_CTRL,
SDIO_RST_CTRL,
SPI_RST_CTRL,
CAN_RST_CTRL,
I2C_RST_CTRL,
UART_RST_CTRL,
GPIO_RST_CTRL,
LQSPI_RST_CTRL,
SMC_RST_CTRL,
OCM_RST_CTRL,
FPGA_RST_CTRL = 0x240 / 4,
A9_CPU_RST_CTRL,
RS_AWDT_CTRL = 0x24c / 4,
RST_REASON,
REBOOT_STATUS = 0x258 / 4,
BOOT_MODE,
APU_CTRL = 0x300 / 4,
WDT_CLK_SEL,
TZ_DMA_NS = 0x440 / 4,
TZ_DMA_IRQ_NS,
TZ_DMA_PERIPH_NS,
PSS_IDCODE = 0x530 / 4,
DDR_URGENT = 0x600 / 4,
DDR_CAL_START = 0x60c / 4,
DDR_REF_START = 0x614 / 4,
DDR_CMD_STA,
DDR_URGENT_SEL,
DDR_DFI_STATUS,
MIO = 0x700 / 4,
#define MIO_LENGTH 54
MIO_LOOPBACK = 0x804 / 4,
MIO_MST_TRI0,
MIO_MST_TRI1,
SD0_WP_CD_SEL = 0x830 / 4,
SD1_WP_CD_SEL,
LVL_SHFTR_EN = 0x900 / 4,
OCM_CFG = 0x910 / 4,
CPU_RAM = 0xa00 / 4,
IOU = 0xa30 / 4,
DMAC_RAM = 0xa50 / 4,
AFI0 = 0xa60 / 4,
AFI1 = AFI0 + 3,
AFI2 = AFI1 + 3,
AFI3 = AFI2 + 3,
#define AFI_LENGTH 3
OCM = 0xa90 / 4,
DEVCI_RAM = 0xaa0 / 4,
CSG_RAM = 0xab0 / 4,
GPIOB_CTRL = 0xb00 / 4,
GPIOB_CFG_CMOS18,
GPIOB_CFG_CMOS25,
GPIOB_CFG_CMOS33,
GPIOB_CFG_HSTL = 0xb14 / 4,
GPIOB_DRVR_BIAS_CTRL,
DDRIOB = 0xb40 / 4,
#define DDRIOB_LENGTH 14
};
#define ZYNQ_SLCR_MMIO_SIZE 0x1000
#define ZYNQ_SLCR_NUM_REGS (ZYNQ_SLCR_MMIO_SIZE / 4)
#define TYPE_ZYNQ_SLCR "xilinx,zynq_slcr"
#define ZYNQ_SLCR(obj) OBJECT_CHECK(ZynqSLCRState, (obj), TYPE_ZYNQ_SLCR)
typedef struct ZynqSLCRState {
SysBusDevice parent_obj;
MemoryRegion iomem;
uint32_t regs[ZYNQ_SLCR_NUM_REGS];
} ZynqSLCRState;
static void zynq_slcr_reset(DeviceState *d)
{
ZynqSLCRState *s = ZYNQ_SLCR(d);
int i;
DB_PRINT("RESET\n");
s->regs[LOCKSTA] = 1;
/* 0x100 - 0x11C */
s->regs[ARM_PLL_CTRL] = 0x0001A008;
s->regs[DDR_PLL_CTRL] = 0x0001A008;
s->regs[IO_PLL_CTRL] = 0x0001A008;
s->regs[PLL_STATUS] = 0x0000003F;
s->regs[ARM_PLL_CFG] = 0x00014000;
s->regs[DDR_PLL_CFG] = 0x00014000;
s->regs[IO_PLL_CFG] = 0x00014000;
/* 0x120 - 0x16C */
s->regs[ARM_CLK_CTRL] = 0x1F000400;
s->regs[DDR_CLK_CTRL] = 0x18400003;
s->regs[DCI_CLK_CTRL] = 0x01E03201;
s->regs[APER_CLK_CTRL] = 0x01FFCCCD;
s->regs[USB0_CLK_CTRL] = s->regs[USB1_CLK_CTRL] = 0x00101941;
s->regs[GEM0_RCLK_CTRL] = s->regs[GEM1_RCLK_CTRL] = 0x00000001;
s->regs[GEM0_CLK_CTRL] = s->regs[GEM1_CLK_CTRL] = 0x00003C01;
s->regs[SMC_CLK_CTRL] = 0x00003C01;
s->regs[LQSPI_CLK_CTRL] = 0x00002821;
s->regs[SDIO_CLK_CTRL] = 0x00001E03;
s->regs[UART_CLK_CTRL] = 0x00003F03;
s->regs[SPI_CLK_CTRL] = 0x00003F03;
s->regs[CAN_CLK_CTRL] = 0x00501903;
s->regs[DBG_CLK_CTRL] = 0x00000F03;
s->regs[PCAP_CLK_CTRL] = 0x00000F01;
/* 0x170 - 0x1AC */
s->regs[FPGA0_CLK_CTRL] = s->regs[FPGA1_CLK_CTRL] = s->regs[FPGA2_CLK_CTRL]
= s->regs[FPGA3_CLK_CTRL] = 0x00101800;
s->regs[FPGA0_THR_STA] = s->regs[FPGA1_THR_STA] = s->regs[FPGA2_THR_STA]
= s->regs[FPGA3_THR_STA] = 0x00010000;
/* 0x1B0 - 0x1D8 */
s->regs[BANDGAP_TRIP] = 0x0000001F;
s->regs[PLL_PREDIVISOR] = 0x00000001;
s->regs[CLK_621_TRUE] = 0x00000001;
/* 0x200 - 0x25C */
s->regs[FPGA_RST_CTRL] = 0x01F33F0F;
s->regs[RST_REASON] = 0x00000040;
s->regs[BOOT_MODE] = 0x00000001;
/* 0x700 - 0x7D4 */
for (i = 0; i < 54; i++) {
s->regs[MIO + i] = 0x00001601;
}
for (i = 2; i <= 8; i++) {
s->regs[MIO + i] = 0x00000601;
}
s->regs[MIO_MST_TRI0] = s->regs[MIO_MST_TRI1] = 0xFFFFFFFF;
s->regs[CPU_RAM + 0] = s->regs[CPU_RAM + 1] = s->regs[CPU_RAM + 3]
= s->regs[CPU_RAM + 4] = s->regs[CPU_RAM + 7]
= 0x00010101;
s->regs[CPU_RAM + 2] = s->regs[CPU_RAM + 5] = 0x01010101;
s->regs[CPU_RAM + 6] = 0x00000001;
s->regs[IOU + 0] = s->regs[IOU + 1] = s->regs[IOU + 2] = s->regs[IOU + 3]
= 0x09090909;
s->regs[IOU + 4] = s->regs[IOU + 5] = 0x00090909;
s->regs[IOU + 6] = 0x00000909;
s->regs[DMAC_RAM] = 0x00000009;
s->regs[AFI0 + 0] = s->regs[AFI0 + 1] = 0x09090909;
s->regs[AFI1 + 0] = s->regs[AFI1 + 1] = 0x09090909;
s->regs[AFI2 + 0] = s->regs[AFI2 + 1] = 0x09090909;
s->regs[AFI3 + 0] = s->regs[AFI3 + 1] = 0x09090909;
s->regs[AFI0 + 2] = s->regs[AFI1 + 2] = s->regs[AFI2 + 2]
= s->regs[AFI3 + 2] = 0x00000909;
s->regs[OCM + 0] = 0x01010101;
s->regs[OCM + 1] = s->regs[OCM + 2] = 0x09090909;
s->regs[DEVCI_RAM] = 0x00000909;
s->regs[CSG_RAM] = 0x00000001;
s->regs[DDRIOB + 0] = s->regs[DDRIOB + 1] = s->regs[DDRIOB + 2]
= s->regs[DDRIOB + 3] = 0x00000e00;
s->regs[DDRIOB + 4] = s->regs[DDRIOB + 5] = s->regs[DDRIOB + 6]
= 0x00000e00;
s->regs[DDRIOB + 12] = 0x00000021;
}
static bool zynq_slcr_check_offset(hwaddr offset, bool rnw)
{
switch (offset) {
case LOCK:
case UNLOCK:
case DDR_CAL_START:
case DDR_REF_START:
return !rnw; /* Write only */
case LOCKSTA:
case FPGA0_THR_STA:
case FPGA1_THR_STA:
case FPGA2_THR_STA:
case FPGA3_THR_STA:
case BOOT_MODE:
case PSS_IDCODE:
case DDR_CMD_STA:
case DDR_DFI_STATUS:
case PLL_STATUS:
return rnw;/* read only */
case SCL:
case ARM_PLL_CTRL ... IO_PLL_CTRL:
case ARM_PLL_CFG ... IO_PLL_CFG:
case ARM_CLK_CTRL ... TOPSW_CLK_CTRL:
case FPGA0_CLK_CTRL ... FPGA0_THR_CNT:
case FPGA1_CLK_CTRL ... FPGA1_THR_CNT:
case FPGA2_CLK_CTRL ... FPGA2_THR_CNT:
case FPGA3_CLK_CTRL ... FPGA3_THR_CNT:
case BANDGAP_TRIP:
case PLL_PREDIVISOR:
case CLK_621_TRUE:
case PSS_RST_CTRL ... A9_CPU_RST_CTRL:
case RS_AWDT_CTRL:
case RST_REASON:
case REBOOT_STATUS:
case APU_CTRL:
case WDT_CLK_SEL:
case TZ_DMA_NS ... TZ_DMA_PERIPH_NS:
case DDR_URGENT:
case DDR_URGENT_SEL:
case MIO ... MIO + MIO_LENGTH - 1:
case MIO_LOOPBACK ... MIO_MST_TRI1:
case SD0_WP_CD_SEL:
case SD1_WP_CD_SEL:
case LVL_SHFTR_EN:
case OCM_CFG:
case CPU_RAM:
case IOU:
case DMAC_RAM:
case AFI0 ... AFI3 + AFI_LENGTH - 1:
case OCM:
case DEVCI_RAM:
case CSG_RAM:
case GPIOB_CTRL ... GPIOB_CFG_CMOS33:
case GPIOB_CFG_HSTL:
case GPIOB_DRVR_BIAS_CTRL:
case DDRIOB ... DDRIOB + DDRIOB_LENGTH - 1:
return true;
default:
return false;
}
}
static uint64_t zynq_slcr_read(void *opaque, hwaddr offset,
unsigned size)
{
ZynqSLCRState *s = opaque;
offset /= 4;
uint32_t ret = s->regs[offset];
if (!zynq_slcr_check_offset(offset, true)) {
qemu_log_mask(LOG_GUEST_ERROR, "zynq_slcr: Invalid read access to "
" addr %" HWADDR_PRIx "\n", offset * 4);
}
DB_PRINT("addr: %08" HWADDR_PRIx " data: %08" PRIx32 "\n", offset * 4, ret);
return ret;
}
static void zynq_slcr_write(void *opaque, hwaddr offset,
uint64_t val, unsigned size)
{
ZynqSLCRState *s = (ZynqSLCRState *)opaque;
offset /= 4;
DB_PRINT("addr: %08" HWADDR_PRIx " data: %08" PRIx64 "\n", offset * 4, val);
if (!zynq_slcr_check_offset(offset, false)) {
qemu_log_mask(LOG_GUEST_ERROR, "zynq_slcr: Invalid write access to "
"addr %" HWADDR_PRIx "\n", offset * 4);
return;
}
switch (offset) {
case SCL:
s->regs[SCL] = val & 0x1;
return;
case LOCK:
if ((val & 0xFFFF) == XILINX_LOCK_KEY) {
DB_PRINT("XILINX LOCK 0xF8000000 + 0x%x <= 0x%x\n", (int)offset,
(unsigned)val & 0xFFFF);
s->regs[LOCKSTA] = 1;
} else {
DB_PRINT("WRONG XILINX LOCK KEY 0xF8000000 + 0x%x <= 0x%x\n",
(int)offset, (unsigned)val & 0xFFFF);
}
return;
case UNLOCK:
if ((val & 0xFFFF) == XILINX_UNLOCK_KEY) {
DB_PRINT("XILINX UNLOCK 0xF8000000 + 0x%x <= 0x%x\n", (int)offset,
(unsigned)val & 0xFFFF);
s->regs[LOCKSTA] = 0;
} else {
DB_PRINT("WRONG XILINX UNLOCK KEY 0xF8000000 + 0x%x <= 0x%x\n",
(int)offset, (unsigned)val & 0xFFFF);
}
return;
}
if (!s->regs[LOCKSTA]) {
s->regs[offset / 4] = val;
} else {
DB_PRINT("SCLR registers are locked. Unlock them first\n");
return;
}
switch (offset) {
case PSS_RST_CTRL:
if (val & R_PSS_RST_CTRL_SOFT_RST) {
qemu_system_reset_request();
}
break;
}
}
static const MemoryRegionOps slcr_ops = {
.read = zynq_slcr_read,
.write = zynq_slcr_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void zynq_slcr_init(Object *obj)
{
ZynqSLCRState *s = ZYNQ_SLCR(obj);
memory_region_init_io(&s->iomem, obj, &slcr_ops, s, "slcr",
ZYNQ_SLCR_MMIO_SIZE);
sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->iomem);
}
static const VMStateDescription vmstate_zynq_slcr = {
.name = "zynq_slcr",
.version_id = 2,
.minimum_version_id = 2,
.minimum_version_id_old = 2,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(regs, ZynqSLCRState, ZYNQ_SLCR_NUM_REGS),
VMSTATE_END_OF_LIST()
}
};
static void zynq_slcr_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->vmsd = &vmstate_zynq_slcr;
dc->reset = zynq_slcr_reset;
}
static const TypeInfo zynq_slcr_info = {
.class_init = zynq_slcr_class_init,
.name = TYPE_ZYNQ_SLCR,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(ZynqSLCRState),
.instance_init = zynq_slcr_init,
};
static void zynq_slcr_register_types(void)
{
type_register_static(&zynq_slcr_info);
}
type_init(zynq_slcr_register_types)