/* * 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" #ifdef ZYNQ_ARM_SLCR_ERR_DEBUG #define DB_PRINT(...) do { \ fprintf(stderr, ": %s: ", __func__); \ fprintf(stderr, ## __VA_ARGS__); \ } while (0); #else #define DB_PRINT(...) #endif #define XILINX_LOCK_KEY 0x767b #define XILINX_UNLOCK_KEY 0xdf0d typedef enum { ARM_PLL_CTRL, DDR_PLL_CTRL, IO_PLL_CTRL, PLL_STATUS, ARM_PPL_CFG, DDR_PLL_CFG, IO_PLL_CFG, PLL_BG_CTRL, PLL_MAX } PLLValues; typedef enum { ARM_CLK_CTRL, 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, CLK_MAX } ClkValues; typedef enum { CLK_CTRL, THR_CTRL, THR_CNT, THR_STA, FPGA_MAX } FPGAValues; typedef enum { SYNC_CTRL, SYNC_STATUS, BANDGAP_TRIP, CC_TEST, PLL_PREDIVISOR, CLK_621_TRUE, PICTURE_DBG, PICTURE_DBG_UCNT, PICTURE_DBG_LCNT, MISC_MAX } MiscValues; typedef enum { PSS, DDDR, DMAC = 3, USB, GEM, SDIO, SPI, CAN, I2C, UART, GPIO, LQSPI, SMC, OCM, DEVCI, FPGA, A9_CPU, RS_AWDT, RST_REASON, RST_REASON_CLR, REBOOT_STATUS, BOOT_MODE, RESET_MAX } ResetValues; typedef struct { SysBusDevice busdev; MemoryRegion iomem; union { struct { uint16_t scl; uint16_t lockval; uint32_t pll[PLL_MAX]; /* 0x100 - 0x11C */ uint32_t clk[CLK_MAX]; /* 0x120 - 0x16C */ uint32_t fpga[4][FPGA_MAX]; /* 0x170 - 0x1AC */ uint32_t misc[MISC_MAX]; /* 0x1B0 - 0x1D8 */ uint32_t reset[RESET_MAX]; /* 0x200 - 0x25C */ uint32_t apu_ctrl; /* 0x300 */ uint32_t wdt_clk_sel; /* 0x304 */ uint32_t tz_ocm[3]; /* 0x400 - 0x408 */ uint32_t tz_ddr; /* 0x430 */ uint32_t tz_dma[3]; /* 0x440 - 0x448 */ uint32_t tz_misc[3]; /* 0x450 - 0x458 */ uint32_t tz_fpga[2]; /* 0x484 - 0x488 */ uint32_t dbg_ctrl; /* 0x500 */ uint32_t pss_idcode; /* 0x530 */ uint32_t ddr[8]; /* 0x600 - 0x620 - 0x604-missing */ uint32_t mio[54]; /* 0x700 - 0x7D4 */ uint32_t mio_func[4]; /* 0x800 - 0x810 */ uint32_t sd[2]; /* 0x830 - 0x834 */ uint32_t lvl_shftr_en; /* 0x900 */ uint32_t ocm_cfg; /* 0x910 */ uint32_t cpu_ram[8]; /* 0xA00 - 0xA1C */ uint32_t iou[7]; /* 0xA30 - 0xA48 */ uint32_t dmac_ram; /* 0xA50 */ uint32_t afi[4][3]; /* 0xA60 - 0xA8C */ uint32_t ocm[3]; /* 0xA90 - 0xA98 */ uint32_t devci_ram; /* 0xAA0 */ uint32_t csg_ram; /* 0xAB0 */ uint32_t gpiob[12]; /* 0xB00 - 0xB2C */ uint32_t ddriob[14]; /* 0xB40 - 0xB74 */ }; uint8_t data[0x1000]; }; } ZynqSLCRState; static void zynq_slcr_reset(DeviceState *d) { int i; ZynqSLCRState *s = FROM_SYSBUS(ZynqSLCRState, SYS_BUS_DEVICE(d)); DB_PRINT("RESET\n"); s->lockval = 1; /* 0x100 - 0x11C */ s->pll[ARM_PLL_CTRL] = 0x0001A008; s->pll[DDR_PLL_CTRL] = 0x0001A008; s->pll[IO_PLL_CTRL] = 0x0001A008; s->pll[PLL_STATUS] = 0x0000003F; s->pll[ARM_PPL_CFG] = 0x00014000; s->pll[DDR_PLL_CFG] = 0x00014000; s->pll[IO_PLL_CFG] = 0x00014000; /* 0x120 - 0x16C */ s->clk[ARM_CLK_CTRL] = 0x1F000400; s->clk[DDR_CLK_CTRL] = 0x18400003; s->clk[DCI_CLK_CTRL] = 0x01E03201; s->clk[APER_CLK_CTRL] = 0x01FFCCCD; s->clk[USB0_CLK_CTRL] = s->clk[USB1_CLK_CTRL] = 0x00101941; s->clk[GEM0_RCLK_CTRL] = s->clk[GEM1_RCLK_CTRL] = 0x00000001; s->clk[GEM0_CLK_CTRL] = s->clk[GEM1_CLK_CTRL] = 0x00003C01; s->clk[SMC_CLK_CTRL] = 0x00003C01; s->clk[LQSPI_CLK_CTRL] = 0x00002821; s->clk[SDIO_CLK_CTRL] = 0x00001E03; s->clk[UART_CLK_CTRL] = 0x00003F03; s->clk[SPI_CLK_CTRL] = 0x00003F03; s->clk[CAN_CLK_CTRL] = 0x00501903; s->clk[DBG_CLK_CTRL] = 0x00000F03; s->clk[PCAP_CLK_CTRL] = 0x00000F01; /* 0x170 - 0x1AC */ s->fpga[0][CLK_CTRL] = s->fpga[1][CLK_CTRL] = s->fpga[2][CLK_CTRL] = s->fpga[3][CLK_CTRL] = 0x00101800; s->fpga[0][THR_STA] = s->fpga[1][THR_STA] = s->fpga[2][THR_STA] = s->fpga[3][THR_STA] = 0x00010000; /* 0x1B0 - 0x1D8 */ s->misc[BANDGAP_TRIP] = 0x0000001F; s->misc[PLL_PREDIVISOR] = 0x00000001; s->misc[CLK_621_TRUE] = 0x00000001; /* 0x200 - 0x25C */ s->reset[FPGA] = 0x01F33F0F; s->reset[RST_REASON] = 0x00000040; /* 0x700 - 0x7D4 */ for (i = 0; i < 54; i++) { s->mio[i] = 0x00001601; } for (i = 2; i <= 8; i++) { s->mio[i] = 0x00000601; } /* MIO_MST_TRI0, MIO_MST_TRI1 */ s->mio_func[2] = s->mio_func[3] = 0xFFFFFFFF; s->cpu_ram[0] = s->cpu_ram[1] = s->cpu_ram[3] = s->cpu_ram[4] = s->cpu_ram[7] = 0x00010101; s->cpu_ram[2] = s->cpu_ram[5] = 0x01010101; s->cpu_ram[6] = 0x00000001; s->iou[0] = s->iou[1] = s->iou[2] = s->iou[3] = 0x09090909; s->iou[4] = s->iou[5] = 0x00090909; s->iou[6] = 0x00000909; s->dmac_ram = 0x00000009; s->afi[0][0] = s->afi[0][1] = 0x09090909; s->afi[1][0] = s->afi[1][1] = 0x09090909; s->afi[2][0] = s->afi[2][1] = 0x09090909; s->afi[3][0] = s->afi[3][1] = 0x09090909; s->afi[0][2] = s->afi[1][2] = s->afi[2][2] = s->afi[3][2] = 0x00000909; s->ocm[0] = 0x01010101; s->ocm[1] = s->ocm[2] = 0x09090909; s->devci_ram = 0x00000909; s->csg_ram = 0x00000001; s->ddriob[0] = s->ddriob[1] = s->ddriob[2] = s->ddriob[3] = 0x00000e00; s->ddriob[4] = s->ddriob[5] = s->ddriob[6] = 0x00000e00; s->ddriob[12] = 0x00000021; } static inline uint32_t zynq_slcr_read_imp(void *opaque, hwaddr offset) { ZynqSLCRState *s = (ZynqSLCRState *)opaque; switch (offset) { case 0x0: /* SCL */ return s->scl; case 0x4: /* LOCK */ case 0x8: /* UNLOCK */ DB_PRINT("Reading SCLR_LOCK/UNLOCK is not enabled\n"); return 0; case 0x0C: /* LOCKSTA */ return s->lockval; case 0x100 ... 0x11C: return s->pll[(offset - 0x100) / 4]; case 0x120 ... 0x16C: return s->clk[(offset - 0x120) / 4]; case 0x170 ... 0x1AC: return s->fpga[0][(offset - 0x170) / 4]; case 0x1B0 ... 0x1D8: return s->misc[(offset - 0x1B0) / 4]; case 0x200 ... 0x258: return s->reset[(offset - 0x200) / 4]; case 0x25c: return 1; case 0x300: return s->apu_ctrl; case 0x304: return s->wdt_clk_sel; case 0x400 ... 0x408: return s->tz_ocm[(offset - 0x400) / 4]; case 0x430: return s->tz_ddr; case 0x440 ... 0x448: return s->tz_dma[(offset - 0x440) / 4]; case 0x450 ... 0x458: return s->tz_misc[(offset - 0x450) / 4]; case 0x484 ... 0x488: return s->tz_fpga[(offset - 0x484) / 4]; case 0x500: return s->dbg_ctrl; case 0x530: return s->pss_idcode; case 0x600 ... 0x620: if (offset == 0x604) { goto bad_reg; } return s->ddr[(offset - 0x600) / 4]; case 0x700 ... 0x7D4: return s->mio[(offset - 0x700) / 4]; case 0x800 ... 0x810: return s->mio_func[(offset - 0x800) / 4]; case 0x830 ... 0x834: return s->sd[(offset - 0x830) / 4]; case 0x900: return s->lvl_shftr_en; case 0x910: return s->ocm_cfg; case 0xA00 ... 0xA1C: return s->cpu_ram[(offset - 0xA00) / 4]; case 0xA30 ... 0xA48: return s->iou[(offset - 0xA30) / 4]; case 0xA50: return s->dmac_ram; case 0xA60 ... 0xA8C: return s->afi[0][(offset - 0xA60) / 4]; case 0xA90 ... 0xA98: return s->ocm[(offset - 0xA90) / 4]; case 0xAA0: return s->devci_ram; case 0xAB0: return s->csg_ram; case 0xB00 ... 0xB2C: return s->gpiob[(offset - 0xB00) / 4]; case 0xB40 ... 0xB74: return s->ddriob[(offset - 0xB40) / 4]; default: bad_reg: DB_PRINT("Bad register offset 0x%x\n", (int)offset); return 0; } } static uint64_t zynq_slcr_read(void *opaque, hwaddr offset, unsigned size) { uint32_t ret = zynq_slcr_read_imp(opaque, offset); DB_PRINT("addr: %08x data: %08x\n", (unsigned)offset, (unsigned)ret); return ret; } static void zynq_slcr_write(void *opaque, hwaddr offset, uint64_t val, unsigned size) { ZynqSLCRState *s = (ZynqSLCRState *)opaque; DB_PRINT("offset: %08x data: %08x\n", (unsigned)offset, (unsigned)val); switch (offset) { case 0x00: /* SCL */ s->scl = val & 0x1; return; case 0x4: /* SLCR_LOCK */ if ((val & 0xFFFF) == XILINX_LOCK_KEY) { DB_PRINT("XILINX LOCK 0xF8000000 + 0x%x <= 0x%x\n", (int)offset, (unsigned)val & 0xFFFF); s->lockval = 1; } else { DB_PRINT("WRONG XILINX LOCK KEY 0xF8000000 + 0x%x <= 0x%x\n", (int)offset, (unsigned)val & 0xFFFF); } return; case 0x8: /* SLCR_UNLOCK */ if ((val & 0xFFFF) == XILINX_UNLOCK_KEY) { DB_PRINT("XILINX UNLOCK 0xF8000000 + 0x%x <= 0x%x\n", (int)offset, (unsigned)val & 0xFFFF); s->lockval = 0; } else { DB_PRINT("WRONG XILINX UNLOCK KEY 0xF8000000 + 0x%x <= 0x%x\n", (int)offset, (unsigned)val & 0xFFFF); } return; case 0xc: /* LOCKSTA */ DB_PRINT("Writing SCLR_LOCKSTA is not enabled\n"); return; } if (!s->lockval) { switch (offset) { case 0x100 ... 0x11C: if (offset == 0x10C) { goto bad_reg; } s->pll[(offset - 0x100) / 4] = val; break; case 0x120 ... 0x16C: s->clk[(offset - 0x120) / 4] = val; break; case 0x170 ... 0x1AC: s->fpga[0][(offset - 0x170) / 4] = val; break; case 0x1B0 ... 0x1D8: s->misc[(offset - 0x1B0) / 4] = val; break; case 0x200 ... 0x25C: if (offset == 0x250) { goto bad_reg; } s->reset[(offset - 0x200) / 4] = val; break; case 0x300: s->apu_ctrl = val; break; case 0x304: s->wdt_clk_sel = val; break; case 0x400 ... 0x408: s->tz_ocm[(offset - 0x400) / 4] = val; break; case 0x430: s->tz_ddr = val; break; case 0x440 ... 0x448: s->tz_dma[(offset - 0x440) / 4] = val; break; case 0x450 ... 0x458: s->tz_misc[(offset - 0x450) / 4] = val; break; case 0x484 ... 0x488: s->tz_fpga[(offset - 0x484) / 4] = val; break; case 0x500: s->dbg_ctrl = val; break; case 0x530: s->pss_idcode = val; break; case 0x600 ... 0x620: if (offset == 0x604) { goto bad_reg; } s->ddr[(offset - 0x600) / 4] = val; break; case 0x700 ... 0x7D4: s->mio[(offset - 0x700) / 4] = val; break; case 0x800 ... 0x810: s->mio_func[(offset - 0x800) / 4] = val; break; case 0x830 ... 0x834: s->sd[(offset - 0x830) / 4] = val; break; case 0x900: s->lvl_shftr_en = val; break; case 0x910: break; case 0xA00 ... 0xA1C: s->cpu_ram[(offset - 0xA00) / 4] = val; break; case 0xA30 ... 0xA48: s->iou[(offset - 0xA30) / 4] = val; break; case 0xA50: s->dmac_ram = val; break; case 0xA60 ... 0xA8C: s->afi[0][(offset - 0xA60) / 4] = val; break; case 0xA90: s->ocm[0] = val; break; case 0xAA0: s->devci_ram = val; break; case 0xAB0: s->csg_ram = val; break; case 0xB00 ... 0xB2C: if (offset == 0xB20 || offset == 0xB2C) { goto bad_reg; } s->gpiob[(offset - 0xB00) / 4] = val; break; case 0xB40 ... 0xB74: s->ddriob[(offset - 0xB40) / 4] = val; break; default: bad_reg: DB_PRINT("Bad register write %x <= %08x\n", (int)offset, (unsigned)val); } } else { DB_PRINT("SCLR registers are locked. Unlock them first\n"); } } static const MemoryRegionOps slcr_ops = { .read = zynq_slcr_read, .write = zynq_slcr_write, .endianness = DEVICE_NATIVE_ENDIAN, }; static int zynq_slcr_init(SysBusDevice *dev) { ZynqSLCRState *s = FROM_SYSBUS(ZynqSLCRState, dev); memory_region_init_io(&s->iomem, &slcr_ops, s, "slcr", 0x1000); sysbus_init_mmio(dev, &s->iomem); return 0; } static const VMStateDescription vmstate_zynq_slcr = { .name = "zynq_slcr", .version_id = 1, .minimum_version_id = 1, .minimum_version_id_old = 1, .fields = (VMStateField[]) { VMSTATE_UINT8_ARRAY(data, ZynqSLCRState, 0x1000), VMSTATE_END_OF_LIST() } }; static void zynq_slcr_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass); sdc->init = zynq_slcr_init; dc->vmsd = &vmstate_zynq_slcr; dc->reset = zynq_slcr_reset; } static const TypeInfo zynq_slcr_info = { .class_init = zynq_slcr_class_init, .name = "xilinx,zynq_slcr", .parent = TYPE_SYS_BUS_DEVICE, .instance_size = sizeof(ZynqSLCRState), }; static void zynq_slcr_register_types(void) { type_register_static(&zynq_slcr_info); } type_init(zynq_slcr_register_types)