diff options
Diffstat (limited to 'hw/misc/zynq_slcr.c')
| -rw-r--r-- | hw/misc/zynq_slcr.c | 637 |
1 files changed, 637 insertions, 0 deletions
diff --git a/hw/misc/zynq_slcr.c b/hw/misc/zynq_slcr.c new file mode 100644 index 000000000..8b7028596 --- /dev/null +++ b/hw/misc/zynq_slcr.c @@ -0,0 +1,637 @@ +/* + * 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 "qemu/osdep.h" +#include "qemu/timer.h" +#include "sysemu/runstate.h" +#include "hw/sysbus.h" +#include "migration/vmstate.h" +#include "qemu/log.h" +#include "qemu/module.h" +#include "hw/registerfields.h" +#include "hw/qdev-clock.h" +#include "qom/object.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 + +REG32(SCL, 0x000) +REG32(LOCK, 0x004) +REG32(UNLOCK, 0x008) +REG32(LOCKSTA, 0x00c) + +REG32(ARM_PLL_CTRL, 0x100) +REG32(DDR_PLL_CTRL, 0x104) +REG32(IO_PLL_CTRL, 0x108) +/* fields for [ARM|DDR|IO]_PLL_CTRL registers */ + FIELD(xxx_PLL_CTRL, PLL_RESET, 0, 1) + FIELD(xxx_PLL_CTRL, PLL_PWRDWN, 1, 1) + FIELD(xxx_PLL_CTRL, PLL_BYPASS_QUAL, 3, 1) + FIELD(xxx_PLL_CTRL, PLL_BYPASS_FORCE, 4, 1) + FIELD(xxx_PLL_CTRL, PLL_FPDIV, 12, 7) +REG32(PLL_STATUS, 0x10c) +REG32(ARM_PLL_CFG, 0x110) +REG32(DDR_PLL_CFG, 0x114) +REG32(IO_PLL_CFG, 0x118) + +REG32(ARM_CLK_CTRL, 0x120) +REG32(DDR_CLK_CTRL, 0x124) +REG32(DCI_CLK_CTRL, 0x128) +REG32(APER_CLK_CTRL, 0x12c) +REG32(USB0_CLK_CTRL, 0x130) +REG32(USB1_CLK_CTRL, 0x134) +REG32(GEM0_RCLK_CTRL, 0x138) +REG32(GEM1_RCLK_CTRL, 0x13c) +REG32(GEM0_CLK_CTRL, 0x140) +REG32(GEM1_CLK_CTRL, 0x144) +REG32(SMC_CLK_CTRL, 0x148) +REG32(LQSPI_CLK_CTRL, 0x14c) +REG32(SDIO_CLK_CTRL, 0x150) +REG32(UART_CLK_CTRL, 0x154) + FIELD(UART_CLK_CTRL, CLKACT0, 0, 1) + FIELD(UART_CLK_CTRL, CLKACT1, 1, 1) + FIELD(UART_CLK_CTRL, SRCSEL, 4, 2) + FIELD(UART_CLK_CTRL, DIVISOR, 8, 6) +REG32(SPI_CLK_CTRL, 0x158) +REG32(CAN_CLK_CTRL, 0x15c) +REG32(CAN_MIOCLK_CTRL, 0x160) +REG32(DBG_CLK_CTRL, 0x164) +REG32(PCAP_CLK_CTRL, 0x168) +REG32(TOPSW_CLK_CTRL, 0x16c) + +#define FPGA_CTRL_REGS(n, start) \ + REG32(FPGA ## n ## _CLK_CTRL, (start)) \ + REG32(FPGA ## n ## _THR_CTRL, (start) + 0x4)\ + REG32(FPGA ## n ## _THR_CNT, (start) + 0x8)\ + REG32(FPGA ## n ## _THR_STA, (start) + 0xc) +FPGA_CTRL_REGS(0, 0x170) +FPGA_CTRL_REGS(1, 0x180) +FPGA_CTRL_REGS(2, 0x190) +FPGA_CTRL_REGS(3, 0x1a0) + +REG32(BANDGAP_TRIP, 0x1b8) +REG32(PLL_PREDIVISOR, 0x1c0) +REG32(CLK_621_TRUE, 0x1c4) + +REG32(PSS_RST_CTRL, 0x200) + FIELD(PSS_RST_CTRL, SOFT_RST, 0, 1) +REG32(DDR_RST_CTRL, 0x204) +REG32(TOPSW_RESET_CTRL, 0x208) +REG32(DMAC_RST_CTRL, 0x20c) +REG32(USB_RST_CTRL, 0x210) +REG32(GEM_RST_CTRL, 0x214) +REG32(SDIO_RST_CTRL, 0x218) +REG32(SPI_RST_CTRL, 0x21c) +REG32(CAN_RST_CTRL, 0x220) +REG32(I2C_RST_CTRL, 0x224) +REG32(UART_RST_CTRL, 0x228) +REG32(GPIO_RST_CTRL, 0x22c) +REG32(LQSPI_RST_CTRL, 0x230) +REG32(SMC_RST_CTRL, 0x234) +REG32(OCM_RST_CTRL, 0x238) +REG32(FPGA_RST_CTRL, 0x240) +REG32(A9_CPU_RST_CTRL, 0x244) + +REG32(RS_AWDT_CTRL, 0x24c) +REG32(RST_REASON, 0x250) + +REG32(REBOOT_STATUS, 0x258) +REG32(BOOT_MODE, 0x25c) + +REG32(APU_CTRL, 0x300) +REG32(WDT_CLK_SEL, 0x304) + +REG32(TZ_DMA_NS, 0x440) +REG32(TZ_DMA_IRQ_NS, 0x444) +REG32(TZ_DMA_PERIPH_NS, 0x448) + +REG32(PSS_IDCODE, 0x530) + +REG32(DDR_URGENT, 0x600) +REG32(DDR_CAL_START, 0x60c) +REG32(DDR_REF_START, 0x614) +REG32(DDR_CMD_STA, 0x618) +REG32(DDR_URGENT_SEL, 0x61c) +REG32(DDR_DFI_STATUS, 0x620) + +REG32(MIO, 0x700) +#define MIO_LENGTH 54 + +REG32(MIO_LOOPBACK, 0x804) +REG32(MIO_MST_TRI0, 0x808) +REG32(MIO_MST_TRI1, 0x80c) + +REG32(SD0_WP_CD_SEL, 0x830) +REG32(SD1_WP_CD_SEL, 0x834) + +REG32(LVL_SHFTR_EN, 0x900) +REG32(OCM_CFG, 0x910) + +REG32(CPU_RAM, 0xa00) + +REG32(IOU, 0xa30) + +REG32(DMAC_RAM, 0xa50) + +REG32(AFI0, 0xa60) +REG32(AFI1, 0xa6c) +REG32(AFI2, 0xa78) +REG32(AFI3, 0xa84) +#define AFI_LENGTH 3 + +REG32(OCM, 0xa90) + +REG32(DEVCI_RAM, 0xaa0) + +REG32(CSG_RAM, 0xab0) + +REG32(GPIOB_CTRL, 0xb00) +REG32(GPIOB_CFG_CMOS18, 0xb04) +REG32(GPIOB_CFG_CMOS25, 0xb08) +REG32(GPIOB_CFG_CMOS33, 0xb0c) +REG32(GPIOB_CFG_HSTL, 0xb14) +REG32(GPIOB_DRVR_BIAS_CTRL, 0xb18) + +REG32(DDRIOB, 0xb40) +#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" +OBJECT_DECLARE_SIMPLE_TYPE(ZynqSLCRState, ZYNQ_SLCR) + +struct ZynqSLCRState { + SysBusDevice parent_obj; + + MemoryRegion iomem; + + uint32_t regs[ZYNQ_SLCR_NUM_REGS]; + + Clock *ps_clk; + Clock *uart0_ref_clk; + Clock *uart1_ref_clk; +}; + +/* + * return the output frequency of ARM/DDR/IO pll + * using input frequency and PLL_CTRL register + */ +static uint64_t zynq_slcr_compute_pll(uint64_t input, uint32_t ctrl_reg) +{ + uint32_t mult = ((ctrl_reg & R_xxx_PLL_CTRL_PLL_FPDIV_MASK) >> + R_xxx_PLL_CTRL_PLL_FPDIV_SHIFT); + + /* first, check if pll is bypassed */ + if (ctrl_reg & R_xxx_PLL_CTRL_PLL_BYPASS_FORCE_MASK) { + return input; + } + + /* is pll disabled ? */ + if (ctrl_reg & (R_xxx_PLL_CTRL_PLL_RESET_MASK | + R_xxx_PLL_CTRL_PLL_PWRDWN_MASK)) { + return 0; + } + + /* Consider zero feedback as maximum divide ratio possible */ + if (!mult) { + mult = 1 << R_xxx_PLL_CTRL_PLL_FPDIV_LENGTH; + } + + /* frequency multiplier -> period division */ + return input / mult; +} + +/* + * return the output period of a clock given: + * + the periods in an array corresponding to input mux selector + * + the register xxx_CLK_CTRL value + * + enable bit index in ctrl register + * + * This function makes the assumption that the ctrl_reg value is organized as + * follows: + * + bits[13:8] clock frequency divisor + * + bits[5:4] clock mux selector (index in array) + * + bits[index] clock enable + */ +static uint64_t zynq_slcr_compute_clock(const uint64_t periods[], + uint32_t ctrl_reg, + unsigned index) +{ + uint32_t srcsel = extract32(ctrl_reg, 4, 2); /* bits [5:4] */ + uint32_t divisor = extract32(ctrl_reg, 8, 6); /* bits [13:8] */ + + /* first, check if clock is disabled */ + if (((ctrl_reg >> index) & 1u) == 0) { + return 0; + } + + /* + * according to the Zynq technical ref. manual UG585 v1.12.2 in + * Clocks chapter, section 25.10.1 page 705: + * "The 6-bit divider provides a divide range of 1 to 63" + * We follow here what is implemented in linux kernel and consider + * the 0 value as a bypass (no division). + */ + /* frequency divisor -> period multiplication */ + return periods[srcsel] * (divisor ? divisor : 1u); +} + +/* + * macro helper around zynq_slcr_compute_clock to avoid repeating + * the register name. + */ +#define ZYNQ_COMPUTE_CLK(state, plls, reg, enable_field) \ + zynq_slcr_compute_clock((plls), (state)->regs[reg], \ + reg ## _ ## enable_field ## _SHIFT) + +static void zynq_slcr_compute_clocks_internal(ZynqSLCRState *s, uint64_t ps_clk) +{ + uint64_t io_pll = zynq_slcr_compute_pll(ps_clk, s->regs[R_IO_PLL_CTRL]); + uint64_t arm_pll = zynq_slcr_compute_pll(ps_clk, s->regs[R_ARM_PLL_CTRL]); + uint64_t ddr_pll = zynq_slcr_compute_pll(ps_clk, s->regs[R_DDR_PLL_CTRL]); + + uint64_t uart_mux[4] = {io_pll, io_pll, arm_pll, ddr_pll}; + + /* compute uartX reference clocks */ + clock_set(s->uart0_ref_clk, + ZYNQ_COMPUTE_CLK(s, uart_mux, R_UART_CLK_CTRL, CLKACT0)); + clock_set(s->uart1_ref_clk, + ZYNQ_COMPUTE_CLK(s, uart_mux, R_UART_CLK_CTRL, CLKACT1)); +} + +/** + * Compute and set the ouputs clocks periods. + * But do not propagate them further. Connected clocks + * will not receive any updates (See zynq_slcr_compute_clocks()) + */ +static void zynq_slcr_compute_clocks(ZynqSLCRState *s) +{ + uint64_t ps_clk = clock_get(s->ps_clk); + + /* consider outputs clocks are disabled while in reset */ + if (device_is_in_reset(DEVICE(s))) { + ps_clk = 0; + } + + zynq_slcr_compute_clocks_internal(s, ps_clk); +} + +/** + * Propagate the outputs clocks. + * zynq_slcr_compute_clocks() should have been called before + * to configure them. + */ +static void zynq_slcr_propagate_clocks(ZynqSLCRState *s) +{ + clock_propagate(s->uart0_ref_clk); + clock_propagate(s->uart1_ref_clk); +} + +static void zynq_slcr_ps_clk_callback(void *opaque, ClockEvent event) +{ + ZynqSLCRState *s = (ZynqSLCRState *) opaque; + + zynq_slcr_compute_clocks(s); + zynq_slcr_propagate_clocks(s); +} + +static void zynq_slcr_reset_init(Object *obj, ResetType type) +{ + ZynqSLCRState *s = ZYNQ_SLCR(obj); + int i; + + DB_PRINT("RESET\n"); + + s->regs[R_LOCKSTA] = 1; + /* 0x100 - 0x11C */ + s->regs[R_ARM_PLL_CTRL] = 0x0001A008; + s->regs[R_DDR_PLL_CTRL] = 0x0001A008; + s->regs[R_IO_PLL_CTRL] = 0x0001A008; + s->regs[R_PLL_STATUS] = 0x0000003F; + s->regs[R_ARM_PLL_CFG] = 0x00014000; + s->regs[R_DDR_PLL_CFG] = 0x00014000; + s->regs[R_IO_PLL_CFG] = 0x00014000; + + /* 0x120 - 0x16C */ + s->regs[R_ARM_CLK_CTRL] = 0x1F000400; + s->regs[R_DDR_CLK_CTRL] = 0x18400003; + s->regs[R_DCI_CLK_CTRL] = 0x01E03201; + s->regs[R_APER_CLK_CTRL] = 0x01FFCCCD; + s->regs[R_USB0_CLK_CTRL] = s->regs[R_USB1_CLK_CTRL] = 0x00101941; + s->regs[R_GEM0_RCLK_CTRL] = s->regs[R_GEM1_RCLK_CTRL] = 0x00000001; + s->regs[R_GEM0_CLK_CTRL] = s->regs[R_GEM1_CLK_CTRL] = 0x00003C01; + s->regs[R_SMC_CLK_CTRL] = 0x00003C01; + s->regs[R_LQSPI_CLK_CTRL] = 0x00002821; + s->regs[R_SDIO_CLK_CTRL] = 0x00001E03; + s->regs[R_UART_CLK_CTRL] = 0x00003F03; + s->regs[R_SPI_CLK_CTRL] = 0x00003F03; + s->regs[R_CAN_CLK_CTRL] = 0x00501903; + s->regs[R_DBG_CLK_CTRL] = 0x00000F03; + s->regs[R_PCAP_CLK_CTRL] = 0x00000F01; + + /* 0x170 - 0x1AC */ + s->regs[R_FPGA0_CLK_CTRL] = s->regs[R_FPGA1_CLK_CTRL] + = s->regs[R_FPGA2_CLK_CTRL] + = s->regs[R_FPGA3_CLK_CTRL] = 0x00101800; + s->regs[R_FPGA0_THR_STA] = s->regs[R_FPGA1_THR_STA] + = s->regs[R_FPGA2_THR_STA] + = s->regs[R_FPGA3_THR_STA] = 0x00010000; + + /* 0x1B0 - 0x1D8 */ + s->regs[R_BANDGAP_TRIP] = 0x0000001F; + s->regs[R_PLL_PREDIVISOR] = 0x00000001; + s->regs[R_CLK_621_TRUE] = 0x00000001; + + /* 0x200 - 0x25C */ + s->regs[R_FPGA_RST_CTRL] = 0x01F33F0F; + s->regs[R_RST_REASON] = 0x00000040; + + s->regs[R_BOOT_MODE] = 0x00000001; + + /* 0x700 - 0x7D4 */ + for (i = 0; i < 54; i++) { + s->regs[R_MIO + i] = 0x00001601; + } + for (i = 2; i <= 8; i++) { + s->regs[R_MIO + i] = 0x00000601; + } + + s->regs[R_MIO_MST_TRI0] = s->regs[R_MIO_MST_TRI1] = 0xFFFFFFFF; + + s->regs[R_CPU_RAM + 0] = s->regs[R_CPU_RAM + 1] = s->regs[R_CPU_RAM + 3] + = s->regs[R_CPU_RAM + 4] = s->regs[R_CPU_RAM + 7] + = 0x00010101; + s->regs[R_CPU_RAM + 2] = s->regs[R_CPU_RAM + 5] = 0x01010101; + s->regs[R_CPU_RAM + 6] = 0x00000001; + + s->regs[R_IOU + 0] = s->regs[R_IOU + 1] = s->regs[R_IOU + 2] + = s->regs[R_IOU + 3] = 0x09090909; + s->regs[R_IOU + 4] = s->regs[R_IOU + 5] = 0x00090909; + s->regs[R_IOU + 6] = 0x00000909; + + s->regs[R_DMAC_RAM] = 0x00000009; + + s->regs[R_AFI0 + 0] = s->regs[R_AFI0 + 1] = 0x09090909; + s->regs[R_AFI1 + 0] = s->regs[R_AFI1 + 1] = 0x09090909; + s->regs[R_AFI2 + 0] = s->regs[R_AFI2 + 1] = 0x09090909; + s->regs[R_AFI3 + 0] = s->regs[R_AFI3 + 1] = 0x09090909; + s->regs[R_AFI0 + 2] = s->regs[R_AFI1 + 2] = s->regs[R_AFI2 + 2] + = s->regs[R_AFI3 + 2] = 0x00000909; + + s->regs[R_OCM + 0] = 0x01010101; + s->regs[R_OCM + 1] = s->regs[R_OCM + 2] = 0x09090909; + + s->regs[R_DEVCI_RAM] = 0x00000909; + s->regs[R_CSG_RAM] = 0x00000001; + + s->regs[R_DDRIOB + 0] = s->regs[R_DDRIOB + 1] = s->regs[R_DDRIOB + 2] + = s->regs[R_DDRIOB + 3] = 0x00000e00; + s->regs[R_DDRIOB + 4] = s->regs[R_DDRIOB + 5] = s->regs[R_DDRIOB + 6] + = 0x00000e00; + s->regs[R_DDRIOB + 12] = 0x00000021; +} + +static void zynq_slcr_reset_hold(Object *obj) +{ + ZynqSLCRState *s = ZYNQ_SLCR(obj); + + /* will disable all output clocks */ + zynq_slcr_compute_clocks_internal(s, 0); + zynq_slcr_propagate_clocks(s); +} + +static void zynq_slcr_reset_exit(Object *obj) +{ + ZynqSLCRState *s = ZYNQ_SLCR(obj); + + /* will compute output clocks according to ps_clk and registers */ + zynq_slcr_compute_clocks_internal(s, clock_get(s->ps_clk)); + zynq_slcr_propagate_clocks(s); +} + +static bool zynq_slcr_check_offset(hwaddr offset, bool rnw) +{ + switch (offset) { + case R_LOCK: + case R_UNLOCK: + case R_DDR_CAL_START: + case R_DDR_REF_START: + return !rnw; /* Write only */ + case R_LOCKSTA: + case R_FPGA0_THR_STA: + case R_FPGA1_THR_STA: + case R_FPGA2_THR_STA: + case R_FPGA3_THR_STA: + case R_BOOT_MODE: + case R_PSS_IDCODE: + case R_DDR_CMD_STA: + case R_DDR_DFI_STATUS: + case R_PLL_STATUS: + return rnw;/* read only */ + case R_SCL: + case R_ARM_PLL_CTRL ... R_IO_PLL_CTRL: + case R_ARM_PLL_CFG ... R_IO_PLL_CFG: + case R_ARM_CLK_CTRL ... R_TOPSW_CLK_CTRL: + case R_FPGA0_CLK_CTRL ... R_FPGA0_THR_CNT: + case R_FPGA1_CLK_CTRL ... R_FPGA1_THR_CNT: + case R_FPGA2_CLK_CTRL ... R_FPGA2_THR_CNT: + case R_FPGA3_CLK_CTRL ... R_FPGA3_THR_CNT: + case R_BANDGAP_TRIP: + case R_PLL_PREDIVISOR: + case R_CLK_621_TRUE: + case R_PSS_RST_CTRL ... R_A9_CPU_RST_CTRL: + case R_RS_AWDT_CTRL: + case R_RST_REASON: + case R_REBOOT_STATUS: + case R_APU_CTRL: + case R_WDT_CLK_SEL: + case R_TZ_DMA_NS ... R_TZ_DMA_PERIPH_NS: + case R_DDR_URGENT: + case R_DDR_URGENT_SEL: + case R_MIO ... R_MIO + MIO_LENGTH - 1: + case R_MIO_LOOPBACK ... R_MIO_MST_TRI1: + case R_SD0_WP_CD_SEL: + case R_SD1_WP_CD_SEL: + case R_LVL_SHFTR_EN: + case R_OCM_CFG: + case R_CPU_RAM: + case R_IOU: + case R_DMAC_RAM: + case R_AFI0 ... R_AFI3 + AFI_LENGTH - 1: + case R_OCM: + case R_DEVCI_RAM: + case R_CSG_RAM: + case R_GPIOB_CTRL ... R_GPIOB_CFG_CMOS33: + case R_GPIOB_CFG_HSTL: + case R_GPIOB_DRVR_BIAS_CTRL: + case R_DDRIOB ... R_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 R_SCL: + s->regs[R_SCL] = val & 0x1; + return; + case R_LOCK: + if ((val & 0xFFFF) == XILINX_LOCK_KEY) { + DB_PRINT("XILINX LOCK 0xF8000000 + 0x%x <= 0x%x\n", (int)offset, + (unsigned)val & 0xFFFF); + s->regs[R_LOCKSTA] = 1; + } else { + DB_PRINT("WRONG XILINX LOCK KEY 0xF8000000 + 0x%x <= 0x%x\n", + (int)offset, (unsigned)val & 0xFFFF); + } + return; + case R_UNLOCK: + if ((val & 0xFFFF) == XILINX_UNLOCK_KEY) { + DB_PRINT("XILINX UNLOCK 0xF8000000 + 0x%x <= 0x%x\n", (int)offset, + (unsigned)val & 0xFFFF); + s->regs[R_LOCKSTA] = 0; + } else { + DB_PRINT("WRONG XILINX UNLOCK KEY 0xF8000000 + 0x%x <= 0x%x\n", + (int)offset, (unsigned)val & 0xFFFF); + } + return; + } + + if (s->regs[R_LOCKSTA]) { + qemu_log_mask(LOG_GUEST_ERROR, + "SCLR registers are locked. Unlock them first\n"); + return; + } + s->regs[offset] = val; + + switch (offset) { + case R_PSS_RST_CTRL: + if (FIELD_EX32(val, PSS_RST_CTRL, SOFT_RST)) { + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); + } + break; + case R_IO_PLL_CTRL: + case R_ARM_PLL_CTRL: + case R_DDR_PLL_CTRL: + case R_UART_CLK_CTRL: + zynq_slcr_compute_clocks(s); + zynq_slcr_propagate_clocks(s); + break; + } +} + +static const MemoryRegionOps slcr_ops = { + .read = zynq_slcr_read, + .write = zynq_slcr_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static const ClockPortInitArray zynq_slcr_clocks = { + QDEV_CLOCK_IN(ZynqSLCRState, ps_clk, zynq_slcr_ps_clk_callback, ClockUpdate), + QDEV_CLOCK_OUT(ZynqSLCRState, uart0_ref_clk), + QDEV_CLOCK_OUT(ZynqSLCRState, uart1_ref_clk), + QDEV_CLOCK_END +}; + +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); + + qdev_init_clocks(DEVICE(obj), zynq_slcr_clocks); +} + +static const VMStateDescription vmstate_zynq_slcr = { + .name = "zynq_slcr", + .version_id = 3, + .minimum_version_id = 2, + .fields = (VMStateField[]) { + VMSTATE_UINT32_ARRAY(regs, ZynqSLCRState, ZYNQ_SLCR_NUM_REGS), + VMSTATE_CLOCK_V(ps_clk, ZynqSLCRState, 3), + VMSTATE_END_OF_LIST() + } +}; + +static void zynq_slcr_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + ResettableClass *rc = RESETTABLE_CLASS(klass); + + dc->vmsd = &vmstate_zynq_slcr; + rc->phases.enter = zynq_slcr_reset_init; + rc->phases.hold = zynq_slcr_reset_hold; + rc->phases.exit = zynq_slcr_reset_exit; +} + +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) |