Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20190816' into staging

target-arm queue:
 * target/arm: generate a custom MIDR for -cpu max
 * hw/misc/zynq_slcr: refactor to use standard register definition
 * Set ENET_BD_BDU in I.MX FEC controller
 * target/arm: Fix routing of singlestep exceptions
 * refactor a32/t32 decoder handling of PC
 * minor optimisations/cleanups of some a32/t32 codegen
 * target/arm/cpu64: Ensure kvm really supports aarch64=off
 * target/arm/cpu: Ensure we can use the pmu with kvm
 * target/arm: Minor cleanups preparatory to KVM SVE support

# gpg: Signature made Fri 16 Aug 2019 14:15:55 BST
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20190816: (29 commits)
  target/arm: Use tcg_gen_extrh_i64_i32 to extract the high word
  target/arm: Simplify SMMLA, SMMLAR, SMMLS, SMMLSR
  target/arm: Use tcg_gen_rotri_i32 for gen_swap_half
  target/arm: Use ror32 instead of open-coding the operation
  target/arm: Remove redundant shift tests
  target/arm: Use tcg_gen_deposit_i32 for PKHBT, PKHTB
  target/arm: Use tcg_gen_extract_i32 for shifter_out_im
  target/arm/kvm64: Move the get/put of fpsimd registers out
  target/arm/kvm64: Fix error returns
  target/arm/cpu: Use div-round-up to determine predicate register array size
  target/arm/helper: zcr: Add build bug next to value range assumption
  target/arm/cpu: Ensure we can use the pmu with kvm
  target/arm/cpu64: Ensure kvm really supports aarch64=off
  target/arm: Remove helper_double_saturate
  target/arm: Use unallocated_encoding for aarch32
  target/arm: Remove offset argument to gen_exception_bkpt_insn
  target/arm: Replace offset with pc in gen_exception_internal_insn
  target/arm: Replace offset with pc in gen_exception_insn
  target/arm: Replace s->pc with s->base.pc_next
  target/arm: Remove redundant s->pc & ~1
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2 files changed, 240 insertions, 236 deletions

diff --git a/hw/misc/zynq_slcr.c b/hw/misc/zynq_slcr.c
index 04adf618e5..b9a38272d9 100644
--- a/hw/misc/zynq_slcr.c
+++ b/hw/misc/zynq_slcr.c
@@ -21,6 +21,7 @@
 #include "migration/vmstate.h"
 #include "qemu/log.h"
 #include "qemu/module.h"
+#include "hw/registerfields.h"
 
 #ifndef ZYNQ_SLCR_ERR_DEBUG
 #define ZYNQ_SLCR_ERR_DEBUG 0
@@ -36,138 +37,135 @@
 #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,
+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)
+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)
+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) \
-    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,
+    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
 
-    MIO_LOOPBACK    = 0x804 / 4,
-    MIO_MST_TRI0,
-    MIO_MST_TRI1,
+REG32(MIO_LOOPBACK, 0x804)
+REG32(MIO_MST_TRI0, 0x808)
+REG32(MIO_MST_TRI1, 0x80c)
 
-    SD0_WP_CD_SEL   = 0x830 / 4,
-    SD1_WP_CD_SEL,
+REG32(SD0_WP_CD_SEL, 0x830)
+REG32(SD1_WP_CD_SEL, 0x834)
 
-    LVL_SHFTR_EN    = 0x900 / 4,
-    OCM_CFG         = 0x910 / 4,
+REG32(LVL_SHFTR_EN, 0x900)
+REG32(OCM_CFG, 0x910)
 
-    CPU_RAM         = 0xa00 / 4,
+REG32(CPU_RAM, 0xa00)
 
-    IOU             = 0xa30 / 4,
+REG32(IOU, 0xa30)
 
-    DMAC_RAM        = 0xa50 / 4,
+REG32(DMAC_RAM, 0xa50)
 
-    AFI0            = 0xa60 / 4,
-    AFI1 = AFI0 + 3,
-    AFI2 = AFI1 + 3,
-    AFI3 = AFI2 + 3,
+REG32(AFI0, 0xa60)
+REG32(AFI1, 0xa6c)
+REG32(AFI2, 0xa78)
+REG32(AFI3, 0xa84)
 #define AFI_LENGTH 3
 
-    OCM             = 0xa90 / 4,
+REG32(OCM, 0xa90)
 
-    DEVCI_RAM       = 0xaa0 / 4,
+REG32(DEVCI_RAM, 0xaa0)
 
-    CSG_RAM         = 0xab0 / 4,
+REG32(CSG_RAM, 0xab0)
 
-    GPIOB_CTRL      = 0xb00 / 4,
-    GPIOB_CFG_CMOS18,
-    GPIOB_CFG_CMOS25,
-    GPIOB_CFG_CMOS33,
-    GPIOB_CFG_HSTL  = 0xb14 / 4,
-    GPIOB_DRVR_BIAS_CTRL,
+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)
 
-    DDRIOB          = 0xb40 / 4,
+REG32(DDRIOB, 0xb40)
 #define DDRIOB_LENGTH 14
-};
 
 #define ZYNQ_SLCR_MMIO_SIZE     0x1000
 #define ZYNQ_SLCR_NUM_REGS      (ZYNQ_SLCR_MMIO_SIZE / 4)
@@ -190,150 +188,152 @@ static void zynq_slcr_reset(DeviceState *d)
 
     DB_PRINT("RESET\n");
 
-    s->regs[LOCKSTA] = 1;
+    s->regs[R_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;
+    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[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;
+    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[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;
+    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[BANDGAP_TRIP]   = 0x0000001F;
-    s->regs[PLL_PREDIVISOR] = 0x00000001;
-    s->regs[CLK_621_TRUE]   = 0x00000001;
+    s->regs[R_BANDGAP_TRIP]   = 0x0000001F;
+    s->regs[R_PLL_PREDIVISOR] = 0x00000001;
+    s->regs[R_CLK_621_TRUE]   = 0x00000001;
 
     /* 0x200 - 0x25C */
-    s->regs[FPGA_RST_CTRL]  = 0x01F33F0F;
-    s->regs[RST_REASON]     = 0x00000040;
+    s->regs[R_FPGA_RST_CTRL]  = 0x01F33F0F;
+    s->regs[R_RST_REASON]     = 0x00000040;
 
-    s->regs[BOOT_MODE]      = 0x00000001;
+    s->regs[R_BOOT_MODE]      = 0x00000001;
 
     /* 0x700 - 0x7D4 */
     for (i = 0; i < 54; i++) {
-        s->regs[MIO + i] = 0x00001601;
+        s->regs[R_MIO + i] = 0x00001601;
     }
     for (i = 2; i <= 8; i++) {
-        s->regs[MIO + i] = 0x00000601;
+        s->regs[R_MIO + i] = 0x00000601;
     }
 
-    s->regs[MIO_MST_TRI0] = s->regs[MIO_MST_TRI1] = 0xFFFFFFFF;
+    s->regs[R_MIO_MST_TRI0] = s->regs[R_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[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[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[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[DMAC_RAM] = 0x00000009;
+    s->regs[R_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[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[OCM + 0]    = 0x01010101;
-    s->regs[OCM + 1]    = s->regs[OCM + 2] = 0x09090909;
+    s->regs[R_OCM + 0] = 0x01010101;
+    s->regs[R_OCM + 1] = s->regs[R_OCM + 2] = 0x09090909;
 
-    s->regs[DEVCI_RAM]  = 0x00000909;
-    s->regs[CSG_RAM]    = 0x00000001;
+    s->regs[R_DEVCI_RAM] = 0x00000909;
+    s->regs[R_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;
+    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 bool zynq_slcr_check_offset(hwaddr offset, bool rnw)
 {
     switch (offset) {
-    case LOCK:
-    case UNLOCK:
-    case DDR_CAL_START:
-    case DDR_REF_START:
+    case R_LOCK:
+    case R_UNLOCK:
+    case R_DDR_CAL_START:
+    case R_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:
+    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 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:
+    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;
@@ -371,24 +371,24 @@ static void zynq_slcr_write(void *opaque, hwaddr offset,
     }
 
     switch (offset) {
-    case SCL:
-        s->regs[SCL] = val & 0x1;
+    case R_SCL:
+        s->regs[R_SCL] = val & 0x1;
         return;
-    case LOCK:
+    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[LOCKSTA] = 1;
+            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 UNLOCK:
+    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[LOCKSTA] = 0;
+            s->regs[R_LOCKSTA] = 0;
         } else {
             DB_PRINT("WRONG XILINX UNLOCK KEY 0xF8000000 + 0x%x <= 0x%x\n",
                 (int)offset, (unsigned)val & 0xFFFF);
@@ -396,7 +396,7 @@ static void zynq_slcr_write(void *opaque, hwaddr offset,
         return;
     }
 
-    if (s->regs[LOCKSTA]) {
+    if (s->regs[R_LOCKSTA]) {
         qemu_log_mask(LOG_GUEST_ERROR,
                       "SCLR registers are locked. Unlock them first\n");
         return;
@@ -404,8 +404,8 @@ static void zynq_slcr_write(void *opaque, hwaddr offset,
     s->regs[offset] = val;
 
     switch (offset) {
-    case PSS_RST_CTRL:
-        if (val & R_PSS_RST_CTRL_SOFT_RST) {
+    case R_PSS_RST_CTRL:
+        if (FIELD_EX32(val, PSS_RST_CTRL, SOFT_RST)) {
             qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
         }
         break;
diff --git a/hw/net/imx_fec.c b/hw/net/imx_fec.c
index 7ac4ed7c12..bd99236864 100644
--- a/hw/net/imx_fec.c
+++ b/hw/net/imx_fec.c
@@ -593,6 +593,8 @@ static void imx_enet_do_tx(IMXFECState *s, uint32_t index)
             if (bd.option & ENET_BD_TX_INT) {
                 s->regs[ENET_EIR] |= int_txf;
             }
+            /* Indicate that we've updated the last buffer descriptor. */
+            bd.last_buffer = ENET_BD_BDU;
         }
         if (bd.option & ENET_BD_TX_INT) {
             s->regs[ENET_EIR] |= int_txb;
@@ -1242,6 +1244,8 @@ static ssize_t imx_enet_receive(NetClientState *nc, const uint8_t *buf,
             /* Last buffer in frame.  */
             bd.flags |= flags | ENET_BD_L;
             FEC_PRINTF("rx frame flags %04x\n", bd.flags);
+            /* Indicate that we've updated the last buffer descriptor. */
+            bd.last_buffer = ENET_BD_BDU;
             if (bd.option & ENET_BD_RX_INT) {
                 s->regs[ENET_EIR] |= ENET_INT_RXF;
             }