diff options
-rw-r--r-- | hw/m25p80.c | 61 | ||||
-rw-r--r-- | hw/xilinx_spips.c | 289 | ||||
-rw-r--r-- | hw/xilinx_zynq.c | 40 |
3 files changed, 340 insertions, 50 deletions
diff --git a/hw/m25p80.c b/hw/m25p80.c index 9a56de8023..3895e73957 100644 --- a/hw/m25p80.c +++ b/hw/m25p80.c @@ -72,6 +72,10 @@ typedef struct FlashPartInfo { .page_size = 256,\ .flags = (_flags),\ +#define JEDEC_NUMONYX 0x20 +#define JEDEC_WINBOND 0xEF +#define JEDEC_SPANSION 0x01 + static const FlashPartInfo known_devices[] = { /* Atmel -- some are (confusingly) marketed as "DataFlash" */ { INFO("at25fs010", 0x1f6601, 0, 32 << 10, 4, ER_4K) }, @@ -180,17 +184,26 @@ static const FlashPartInfo known_devices[] = { typedef enum { NOP = 0, - PP = 0x2, - READ = 0x3, WRDI = 0x4, RDSR = 0x5, WREN = 0x6, + JEDEC_READ = 0x9f, + BULK_ERASE = 0xc7, + + READ = 0x3, FAST_READ = 0xb, + DOR = 0x3b, + QOR = 0x6b, + DIOR = 0xbb, + QIOR = 0xeb, + + PP = 0x2, + DPP = 0xa2, + QPP = 0x32, + ERASE_4K = 0x20, ERASE_32K = 0x52, ERASE_SECTOR = 0xd8, - JEDEC_READ = 0x9f, - BULK_ERASE = 0xc7, } FlashCMD; typedef enum { @@ -346,11 +359,17 @@ static void complete_collecting_data(Flash *s) s->cur_addr |= s->data[2]; switch (s->cmd_in_progress) { + case DPP: + case QPP: case PP: s->state = STATE_PAGE_PROGRAM; break; case READ: case FAST_READ: + case DOR: + case QOR: + case DIOR: + case QIOR: s->state = STATE_READ; break; case ERASE_4K: @@ -374,6 +393,8 @@ static void decode_new_cmd(Flash *s, uint32_t value) case ERASE_32K: case ERASE_SECTOR: case READ: + case DPP: + case QPP: case PP: s->needed_bytes = 3; s->pos = 0; @@ -382,12 +403,44 @@ static void decode_new_cmd(Flash *s, uint32_t value) break; case FAST_READ: + case DOR: + case QOR: s->needed_bytes = 4; s->pos = 0; s->len = 0; s->state = STATE_COLLECTING_DATA; break; + case DIOR: + switch ((s->pi->jedec >> 16) & 0xFF) { + case JEDEC_WINBOND: + case JEDEC_SPANSION: + s->needed_bytes = 4; + break; + case JEDEC_NUMONYX: + default: + s->needed_bytes = 5; + } + s->pos = 0; + s->len = 0; + s->state = STATE_COLLECTING_DATA; + break; + + case QIOR: + switch ((s->pi->jedec >> 16) & 0xFF) { + case JEDEC_WINBOND: + case JEDEC_SPANSION: + s->needed_bytes = 6; + break; + case JEDEC_NUMONYX: + default: + s->needed_bytes = 8; + } + s->pos = 0; + s->len = 0; + s->state = STATE_COLLECTING_DATA; + break; + case WRDI: s->write_enable = false; break; diff --git a/hw/xilinx_spips.c b/hw/xilinx_spips.c index 93a4957010..ee7656d7d8 100644 --- a/hw/xilinx_spips.c +++ b/hw/xilinx_spips.c @@ -28,6 +28,7 @@ #include "qemu-log.h" #include "fifo.h" #include "ssi.h" +#include "bitops.h" #ifdef XILINX_SPIPS_ERR_DEBUG #define DB_PRINT(...) do { \ @@ -40,6 +41,8 @@ /* config register */ #define R_CONFIG (0x00 / 4) +#define IFMODE (1 << 31) +#define ENDIAN (1 << 26) #define MODEFAIL_GEN_EN (1 << 17) #define MAN_START_COM (1 << 16) #define MAN_START_EN (1 << 15) @@ -75,45 +78,101 @@ #define R_SLAVE_IDLE_COUNT (0x24 / 4) #define R_TX_THRES (0x28 / 4) #define R_RX_THRES (0x2C / 4) +#define R_TXD1 (0x80 / 4) +#define R_TXD2 (0x84 / 4) +#define R_TXD3 (0x88 / 4) + +#define R_LQSPI_CFG (0xa0 / 4) +#define R_LQSPI_CFG_RESET 0x03A002EB +#define LQSPI_CFG_LQ_MODE (1 << 31) +#define LQSPI_CFG_TWO_MEM (1 << 30) +#define LQSPI_CFG_SEP_BUS (1 << 30) +#define LQSPI_CFG_U_PAGE (1 << 28) +#define LQSPI_CFG_MODE_EN (1 << 25) +#define LQSPI_CFG_MODE_WIDTH 8 +#define LQSPI_CFG_MODE_SHIFT 16 +#define LQSPI_CFG_DUMMY_WIDTH 3 +#define LQSPI_CFG_DUMMY_SHIFT 8 +#define LQSPI_CFG_INST_CODE 0xFF + +#define R_LQSPI_STS (0xA4 / 4) +#define LQSPI_STS_WR_RECVD (1 << 1) + #define R_MOD_ID (0xFC / 4) #define R_MAX (R_MOD_ID+1) /* size of TXRX FIFOs */ -#define NUM_CS_LINES 4 #define RXFF_A 32 #define TXFF_A 32 +/* 16MB per linear region */ +#define LQSPI_ADDRESS_BITS 24 +/* Bite off 4k chunks at a time */ +#define LQSPI_CACHE_SIZE 1024 + +#define SNOOP_CHECKING 0xFF +#define SNOOP_NONE 0xFE +#define SNOOP_STRIPING 0 + typedef struct { SysBusDevice busdev; MemoryRegion iomem; + MemoryRegion mmlqspi; + qemu_irq irq; int irqline; - qemu_irq cs_lines[NUM_CS_LINES]; - SSIBus *spi; + uint8_t num_cs; + uint8_t num_busses; + + uint8_t snoop_state; + qemu_irq *cs_lines; + SSIBus **spi; Fifo8 rx_fifo; Fifo8 tx_fifo; + uint8_t num_txrx_bytes; + uint32_t regs[R_MAX]; + + uint32_t lqspi_buf[LQSPI_CACHE_SIZE]; + hwaddr lqspi_cached_addr; } XilinxSPIPS; +static inline int num_effective_busses(XilinxSPIPS *s) +{ + return (s->regs[R_LQSPI_STS] & LQSPI_CFG_SEP_BUS && + s->regs[R_LQSPI_STS] & LQSPI_CFG_TWO_MEM) ? s->num_busses : 1; +} + static void xilinx_spips_update_cs_lines(XilinxSPIPS *s) { - int i; + int i, j; bool found = false; int field = s->regs[R_CONFIG] >> CS_SHIFT; - for (i = 0; i < NUM_CS_LINES; i++) { - if (~field & (1 << i) && !found) { + for (i = 0; i < s->num_cs; i++) { + for (j = 0; j < num_effective_busses(s); j++) { + int upage = !!(s->regs[R_LQSPI_STS] & LQSPI_CFG_U_PAGE); + int cs_to_set = (j * s->num_cs + i + upage) % + (s->num_cs * s->num_busses); + + if (~field & (1 << i) && !found) { + DB_PRINT("selecting slave %d\n", i); + qemu_set_irq(s->cs_lines[cs_to_set], 0); + } else { + qemu_set_irq(s->cs_lines[cs_to_set], 1); + } + } + if (~field & (1 << i)) { found = true; - DB_PRINT("selecting slave %d\n", i); - qemu_set_irq(s->cs_lines[i], 0); - } else { - qemu_set_irq(s->cs_lines[i], 1); } - } + } + if (!found) { + s->snoop_state = SNOOP_CHECKING; + } } static void xilinx_spips_update_ixr(XilinxSPIPS *s) @@ -154,6 +213,8 @@ static void xilinx_spips_reset(DeviceState *d) s->regs[R_RX_THRES] = 1; /* FIXME: move magic number definition somewhere sensible */ s->regs[R_MOD_ID] = 0x01090106; + s->regs[R_LQSPI_CFG] = R_LQSPI_CFG_RESET; + s->snoop_state = SNOOP_CHECKING; xilinx_spips_update_ixr(s); xilinx_spips_update_cs_lines(s); } @@ -161,26 +222,68 @@ static void xilinx_spips_reset(DeviceState *d) static void xilinx_spips_flush_txfifo(XilinxSPIPS *s) { for (;;) { - uint32_t r; - uint8_t value; + int i; + uint8_t rx; + uint8_t tx = 0; + + for (i = 0; i < num_effective_busses(s); ++i) { + if (!i || s->snoop_state == SNOOP_STRIPING) { + if (fifo8_is_empty(&s->tx_fifo)) { + s->regs[R_INTR_STATUS] |= IXR_TX_FIFO_UNDERFLOW; + xilinx_spips_update_ixr(s); + return; + } else { + tx = fifo8_pop(&s->tx_fifo); + } + } + rx = ssi_transfer(s->spi[i], (uint32_t)tx); + DB_PRINT("tx = %02x rx = %02x\n", tx, rx); + if (!i || s->snoop_state == SNOOP_STRIPING) { + if (fifo8_is_full(&s->rx_fifo)) { + s->regs[R_INTR_STATUS] |= IXR_RX_FIFO_OVERFLOW; + DB_PRINT("rx FIFO overflow"); + } else { + fifo8_push(&s->rx_fifo, (uint8_t)rx); + } + } + } - if (fifo8_is_empty(&s->tx_fifo)) { - s->regs[R_INTR_STATUS] |= IXR_TX_FIFO_UNDERFLOW; + switch (s->snoop_state) { + case (SNOOP_CHECKING): + switch (tx) { /* new instruction code */ + case 0x0b: /* dual/quad output read DOR/QOR */ + case 0x6b: + s->snoop_state = 4; + break; + /* FIXME: these vary between vendor - set to spansion */ + case 0xbb: /* high performance dual read DIOR */ + s->snoop_state = 4; + break; + case 0xeb: /* high performance quad read QIOR */ + s->snoop_state = 6; + break; + default: + s->snoop_state = SNOOP_NONE; + } break; - } else { - value = fifo8_pop(&s->tx_fifo); + case (SNOOP_STRIPING): + case (SNOOP_NONE): + break; + default: + s->snoop_state--; } + } +} - r = ssi_transfer(s->spi, (uint32_t)value); - DB_PRINT("tx = %02x rx = %02x\n", value, r); - if (fifo8_is_full(&s->rx_fifo)) { - s->regs[R_INTR_STATUS] |= IXR_RX_FIFO_OVERFLOW; - DB_PRINT("rx FIFO overflow"); - } else { - fifo8_push(&s->rx_fifo, (uint8_t)r); - } +static inline void rx_data_bytes(XilinxSPIPS *s, uint32_t *value, int max) +{ + int i; + + *value = 0; + for (i = 0; i < max && !fifo8_is_empty(&s->rx_fifo); ++i) { + uint32_t next = fifo8_pop(&s->rx_fifo) & 0xFF; + *value |= next << 8 * (s->regs[R_CONFIG] & ENDIAN ? 3-i : i); } - xilinx_spips_update_ixr(s); } static uint64_t xilinx_spips_read(void *opaque, hwaddr addr, @@ -214,7 +317,7 @@ static uint64_t xilinx_spips_read(void *opaque, hwaddr addr, mask = 0; break; case R_RX_DATA: - ret = (uint32_t)fifo8_pop(&s->rx_fifo); + rx_data_bytes(s, &ret, s->num_txrx_bytes); DB_PRINT("addr=" TARGET_FMT_plx " = %x\n", addr * 4, ret); xilinx_spips_update_ixr(s); return ret; @@ -224,6 +327,20 @@ static uint64_t xilinx_spips_read(void *opaque, hwaddr addr, } +static inline void tx_data_bytes(XilinxSPIPS *s, uint32_t value, int num) +{ + int i; + for (i = 0; i < num && !fifo8_is_full(&s->tx_fifo); ++i) { + if (s->regs[R_CONFIG] & ENDIAN) { + fifo8_push(&s->tx_fifo, (uint8_t)(value >> 24)); + value <<= 8; + } else { + fifo8_push(&s->tx_fifo, (uint8_t)value); + value >>= 8; + } + } +} + static void xilinx_spips_write(void *opaque, hwaddr addr, uint64_t value, unsigned size) { @@ -264,7 +381,16 @@ static void xilinx_spips_write(void *opaque, hwaddr addr, mask = 0; break; case R_TX_DATA: - fifo8_push(&s->tx_fifo, (uint8_t)value); + tx_data_bytes(s, (uint32_t)value, s->num_txrx_bytes); + goto no_reg_update; + case R_TXD1: + tx_data_bytes(s, (uint32_t)value, 1); + goto no_reg_update; + case R_TXD2: + tx_data_bytes(s, (uint32_t)value, 2); + goto no_reg_update; + case R_TXD3: + tx_data_bytes(s, (uint32_t)value, 3); goto no_reg_update; } s->regs[addr] = (s->regs[addr] & ~mask) | (value & mask); @@ -282,6 +408,81 @@ static const MemoryRegionOps spips_ops = { .endianness = DEVICE_LITTLE_ENDIAN, }; +#define LQSPI_CACHE_SIZE 1024 + +static uint64_t +lqspi_read(void *opaque, hwaddr addr, unsigned int size) +{ + int i; + XilinxSPIPS *s = opaque; + + if (addr >= s->lqspi_cached_addr && + addr <= s->lqspi_cached_addr + LQSPI_CACHE_SIZE - 4) { + return s->lqspi_buf[(addr - s->lqspi_cached_addr) >> 2]; + } else { + int flash_addr = (addr / num_effective_busses(s)); + int slave = flash_addr >> LQSPI_ADDRESS_BITS; + int cache_entry = 0; + + DB_PRINT("config reg status: %08x\n", s->regs[R_LQSPI_CFG]); + + fifo8_reset(&s->tx_fifo); + fifo8_reset(&s->rx_fifo); + + s->regs[R_CONFIG] &= ~CS; + s->regs[R_CONFIG] |= (~(1 << slave) << CS_SHIFT) & CS; + xilinx_spips_update_cs_lines(s); + + /* instruction */ + DB_PRINT("pushing read instruction: %02x\n", + (uint8_t)(s->regs[R_LQSPI_CFG] & LQSPI_CFG_INST_CODE)); + fifo8_push(&s->tx_fifo, s->regs[R_LQSPI_CFG] & LQSPI_CFG_INST_CODE); + /* read address */ + DB_PRINT("pushing read address %06x\n", flash_addr); + fifo8_push(&s->tx_fifo, (uint8_t)(flash_addr >> 16)); + fifo8_push(&s->tx_fifo, (uint8_t)(flash_addr >> 8)); + fifo8_push(&s->tx_fifo, (uint8_t)flash_addr); + /* mode bits */ + if (s->regs[R_LQSPI_CFG] & LQSPI_CFG_MODE_EN) { + fifo8_push(&s->tx_fifo, extract32(s->regs[R_LQSPI_CFG], + LQSPI_CFG_MODE_SHIFT, + LQSPI_CFG_MODE_WIDTH)); + } + /* dummy bytes */ + for (i = 0; i < (extract32(s->regs[R_LQSPI_CFG], LQSPI_CFG_DUMMY_SHIFT, + LQSPI_CFG_DUMMY_WIDTH)); ++i) { + DB_PRINT("pushing dummy byte\n"); + fifo8_push(&s->tx_fifo, 0); + } + xilinx_spips_flush_txfifo(s); + fifo8_reset(&s->rx_fifo); + + DB_PRINT("starting QSPI data read\n"); + + for (i = 0; i < LQSPI_CACHE_SIZE / 4; ++i) { + tx_data_bytes(s, 0, 4); + xilinx_spips_flush_txfifo(s); + rx_data_bytes(s, &s->lqspi_buf[cache_entry], 4); + cache_entry++; + } + + s->regs[R_CONFIG] |= CS; + xilinx_spips_update_cs_lines(s); + + s->lqspi_cached_addr = addr; + return lqspi_read(opaque, addr, size); + } +} + +static const MemoryRegionOps lqspi_ops = { + .read = lqspi_read, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 4, + .max_access_size = 4 + } +}; + static int xilinx_spips_init(SysBusDevice *dev) { XilinxSPIPS *s = FROM_SYSBUS(typeof(*s), dev); @@ -289,18 +490,30 @@ static int xilinx_spips_init(SysBusDevice *dev) DB_PRINT("inited device model\n"); - s->spi = ssi_create_bus(&dev->qdev, "spi"); + s->spi = g_new(SSIBus *, s->num_busses); + for (i = 0; i < s->num_busses; ++i) { + char bus_name[16]; + snprintf(bus_name, 16, "spi%d", i); + s->spi[i] = ssi_create_bus(&dev->qdev, bus_name); + } - ssi_auto_connect_slaves(DEVICE(s), s->cs_lines, s->spi); + s->cs_lines = g_new(qemu_irq, s->num_cs * s->num_busses); + ssi_auto_connect_slaves(DEVICE(s), s->cs_lines, s->spi[0]); + ssi_auto_connect_slaves(DEVICE(s), s->cs_lines, s->spi[1]); sysbus_init_irq(dev, &s->irq); - for (i = 0; i < NUM_CS_LINES; ++i) { + for (i = 0; i < s->num_cs * s->num_busses; ++i) { sysbus_init_irq(dev, &s->cs_lines[i]); } memory_region_init_io(&s->iomem, &spips_ops, s, "spi", R_MAX*4); sysbus_init_mmio(dev, &s->iomem); + memory_region_init_io(&s->mmlqspi, &lqspi_ops, s, "lqspi", + (1 << LQSPI_ADDRESS_BITS) * 2); + sysbus_init_mmio(dev, &s->mmlqspi); + s->irqline = -1; + s->lqspi_cached_addr = ~0ULL; fifo8_create(&s->rx_fifo, RXFF_A); fifo8_create(&s->tx_fifo, TXFF_A); @@ -317,18 +530,25 @@ static int xilinx_spips_post_load(void *opaque, int version_id) static const VMStateDescription vmstate_xilinx_spips = { .name = "xilinx_spips", - .version_id = 1, - .minimum_version_id = 1, - .minimum_version_id_old = 1, + .version_id = 2, + .minimum_version_id = 2, + .minimum_version_id_old = 2, .post_load = xilinx_spips_post_load, .fields = (VMStateField[]) { VMSTATE_FIFO8(tx_fifo, XilinxSPIPS), VMSTATE_FIFO8(rx_fifo, XilinxSPIPS), VMSTATE_UINT32_ARRAY(regs, XilinxSPIPS, R_MAX), + VMSTATE_UINT8(snoop_state, XilinxSPIPS), VMSTATE_END_OF_LIST() } }; +static Property xilinx_spips_properties[] = { + DEFINE_PROP_UINT8("num-busses", XilinxSPIPS, num_busses, 1), + DEFINE_PROP_UINT8("num-ss-bits", XilinxSPIPS, num_cs, 4), + DEFINE_PROP_UINT8("num-txrx-bytes", XilinxSPIPS, num_txrx_bytes, 1), + DEFINE_PROP_END_OF_LIST(), +}; static void xilinx_spips_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -336,6 +556,7 @@ static void xilinx_spips_class_init(ObjectClass *klass, void *data) sdc->init = xilinx_spips_init; dc->reset = xilinx_spips_reset; + dc->props = xilinx_spips_properties; dc->vmsd = &vmstate_xilinx_spips; } diff --git a/hw/xilinx_zynq.c b/hw/xilinx_zynq.c index c55dafba6b..00262350b6 100644 --- a/hw/xilinx_zynq.c +++ b/hw/xilinx_zynq.c @@ -27,6 +27,8 @@ #include "ssi.h" #define NUM_SPI_FLASHES 4 +#define NUM_QSPI_FLASHES 2 +#define NUM_QSPI_BUSSES 2 #define FLASH_SIZE (64 * 1024 * 1024) #define FLASH_SECTOR_SIZE (128 * 1024) @@ -49,30 +51,43 @@ static void gem_init(NICInfo *nd, uint32_t base, qemu_irq irq) sysbus_connect_irq(s, 0, irq); } -static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq) +static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq, + bool is_qspi) { DeviceState *dev; SysBusDevice *busdev; SSIBus *spi; - int i; + int i, j; + int num_busses = is_qspi ? NUM_QSPI_BUSSES : 1; + int num_ss = is_qspi ? NUM_QSPI_FLASHES : NUM_SPI_FLASHES; dev = qdev_create(NULL, "xilinx,spips"); + qdev_prop_set_uint8(dev, "num-txrx-bytes", is_qspi ? 4 : 1); + qdev_prop_set_uint8(dev, "num-ss-bits", num_ss); + qdev_prop_set_uint8(dev, "num-busses", num_busses); qdev_init_nofail(dev); busdev = sysbus_from_qdev(dev); sysbus_mmio_map(busdev, 0, base_addr); + if (is_qspi) { + sysbus_mmio_map(busdev, 1, 0xFC000000); + } sysbus_connect_irq(busdev, 0, irq); - spi = (SSIBus *)qdev_get_child_bus(dev, "spi"); - - for (i = 0; i < NUM_SPI_FLASHES; ++i) { + for (i = 0; i < num_busses; ++i) { + char bus_name[16]; qemu_irq cs_line; - dev = ssi_create_slave_no_init(spi, "m25p80"); - qdev_prop_set_string(dev, "partname", "n25q128"); - qdev_init_nofail(dev); + snprintf(bus_name, 16, "spi%d", i); + spi = (SSIBus *)qdev_get_child_bus(dev, bus_name); - cs_line = qdev_get_gpio_in(dev, 0); - sysbus_connect_irq(busdev, i+1, cs_line); + for (j = 0; j < num_ss; ++j) { + dev = ssi_create_slave_no_init(spi, "m25p80"); + qdev_prop_set_string(dev, "partname", "n25q128"); + qdev_init_nofail(dev); + + cs_line = qdev_get_gpio_in(dev, 0); + sysbus_connect_irq(busdev, i * num_ss + j + 1, cs_line); + } } } @@ -147,8 +162,9 @@ static void zynq_init(QEMUMachineInitArgs *args) pic[n] = qdev_get_gpio_in(dev, n); } - zynq_init_spi_flashes(0xE0006000, pic[58-IRQ_OFFSET]); - zynq_init_spi_flashes(0xE0007000, pic[81-IRQ_OFFSET]); + zynq_init_spi_flashes(0xE0006000, pic[58-IRQ_OFFSET], false); + zynq_init_spi_flashes(0xE0007000, pic[81-IRQ_OFFSET], false); + zynq_init_spi_flashes(0xE000D000, pic[51-IRQ_OFFSET], true); sysbus_create_simple("cadence_uart", 0xE0000000, pic[59-IRQ_OFFSET]); sysbus_create_simple("cadence_uart", 0xE0001000, pic[82-IRQ_OFFSET]); |