diff options
Diffstat (limited to 'hw/etraxfs_ser.c')
| -rw-r--r-- | hw/etraxfs_ser.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/hw/etraxfs_ser.c b/hw/etraxfs_ser.c new file mode 100644 index 000000000..bb2aeb76a --- /dev/null +++ b/hw/etraxfs_ser.c @@ -0,0 +1,122 @@ +/* + * QEMU ETRAX System Emulator + * + * Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include <stdio.h> +#include <ctype.h> +#include "hw.h" + +#define RW_TR_DMA_EN 0xb0026004 +#define RW_DOUT 0xb002601c +#define RW_STAT_DIN 0xb0026020 +#define R_STAT_DIN 0xb0026024 + +static uint32_t ser_readb (void *opaque, target_phys_addr_t addr) +{ + CPUState *env = opaque; + uint32_t r = 0; + printf ("%s %x pc=%x\n", __func__, addr, env->pc); + return r; +} +static uint32_t ser_readw (void *opaque, target_phys_addr_t addr) +{ + CPUState *env = opaque; + uint32_t r = 0; + printf ("%s %x pc=%x\n", __func__, addr, env->pc); + return r; +} + +static uint32_t ser_readl (void *opaque, target_phys_addr_t addr) +{ + CPUState *env = opaque; + uint32_t r = 0; + + switch (addr) + { + case RW_TR_DMA_EN: + break; + case R_STAT_DIN: + r |= 1 << 24; /* set tr_rdy. */ + r |= 1 << 22; /* set tr_idle. */ + break; + + default: + printf ("%s %x p=%x\n", __func__, addr, env->pc); + break; + } + return r; +} + +static void +ser_writeb (void *opaque, target_phys_addr_t addr, uint32_t value) +{ + CPUState *env = opaque; + printf ("%s %x %x pc=%x\n", __func__, addr, value, env->pc); +} +static void +ser_writew (void *opaque, target_phys_addr_t addr, uint32_t value) +{ + CPUState *env = opaque; + printf ("%s %x %x pc=%x\n", __func__, addr, value, env->pc); +} +static void +ser_writel (void *opaque, target_phys_addr_t addr, uint32_t value) +{ + CPUState *env = opaque; + + switch (addr) + { + case RW_TR_DMA_EN: + break; + case RW_DOUT: + if (isprint(value) || isspace(value)) + putchar(value); + else + putchar('.'); + break; + default: + printf ("%s %x %x pc=%x\n", + __func__, addr, value, env->pc); + break; + } +} + +static CPUReadMemoryFunc *ser_read[] = { + &ser_readb, + &ser_readw, + &ser_readl, +}; + +static CPUWriteMemoryFunc *ser_write[] = { + &ser_writeb, + &ser_writew, + &ser_writel, +}; + +void etraxfs_ser_init(CPUState *env, qemu_irq *irqs) +{ + int ser_regs; + + ser_regs = cpu_register_io_memory(0, ser_read, ser_write, env); + cpu_register_physical_memory (0xb0026000, 0x3c, ser_regs); +} |