Re: [Qemu-devel] [PATCH] sh4: Add R2D-PLUS FPGA support.

[Aurelien Jarno <aurelien@aurel32.net>]

On Tue, Sep 02, 2008 at 07:12:00PM +0900, Paul Mundt wrote:
> This adds trivial support for the R2D-PLUS FPGA, mostly just for the
> versioning information that the kernel uses for IRL mappings, in addition
> to handling the heartbeat and poweroff writes.
> 
> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
> 

Applied, thanks.

> ---
> 
>  hw/r2d.c |  111 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 111 insertions(+)
> 
> Index: hw/r2d.c
> ===================================================================
> --- hw/r2d.c	(revision 5132)
> +++ hw/r2d.c	(working copy)
> @@ -2,6 +2,7 @@
>   * Renesas SH7751R R2D-PLUS emulation
>   *
>   * Copyright (c) 2007 Magnus Damm
> + * Copyright (c) 2008 Paul Mundt
>   *
>   * Permission is hereby granted, free of charge, to any person obtaining a copy
>   * of this software and associated documentation files (the "Software"), to deal
> @@ -26,10 +27,119 @@
>  #include "sh.h"
>  #include "sysemu.h"
>  #include "boards.h"
> +#include "assert.h"
>  
>  #define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */
>  #define SDRAM_SIZE 0x04000000
>  
> +#define PA_POWOFF	0x30
> +#define PA_VERREG	0x32
> +#define PA_OUTPORT	0x36
> +
> +typedef struct {
> +    target_phys_addr_t base;
> +
> +    uint16_t bcr;
> +    uint16_t irlmon;
> +    uint16_t cfctl;
> +    uint16_t cfpow;
> +    uint16_t dispctl;
> +    uint16_t sdmpow;
> +    uint16_t rtcce;
> +    uint16_t pcicd;
> +    uint16_t voyagerrts;
> +    uint16_t cfrst;
> +    uint16_t admrts;
> +    uint16_t extrst;
> +    uint16_t cfcdintclr;
> +    uint16_t keyctlclr;
> +    uint16_t pad0;
> +    uint16_t pad1;
> +    uint16_t powoff;
> +    uint16_t verreg;
> +    uint16_t inport;
> +    uint16_t outport;
> +    uint16_t bverreg;
> +} r2d_fpga_t;
> +
> +static uint32_t r2d_fpga_read(void *opaque, target_phys_addr_t addr)
> +{
> +    r2d_fpga_t *s = opaque;
> +
> +    addr -= s->base;
> +
> +    switch (addr) {
> +    case PA_OUTPORT:
> +	return s->outport;
> +    case PA_POWOFF:
> +	return s->powoff;
> +    case PA_VERREG:
> +	return 0x10;
> +    }
> +
> +    return 0;
> +}
> +
> +static void
> +r2d_fpga_write(void *opaque, target_phys_addr_t addr, uint32_t value)
> +{
> +    r2d_fpga_t *s = opaque;
> +
> +    addr -= s->base;
> +
> +    switch (addr) {
> +    case PA_OUTPORT:
> +	s->outport = value;
> +	break;
> +    case PA_POWOFF:
> +	s->powoff = value;
> +	break;
> +    case PA_VERREG:
> +	/* Discard writes */
> +	break;
> +    }
> +}
> +
> +static uint32_t invalid_read(void *opaque, target_phys_addr_t addr)
> +{
> +    assert(0);
> +
> +    return 0;
> +}
> +
> +static void invalid_write(void *opaque, target_phys_addr_t addr,
> +			  uint32_t mem_value)
> +{
> +    assert(0);
> +}
> +
> +static CPUReadMemoryFunc *r2d_fpga_readfn[] = {
> +    r2d_fpga_read,
> +    r2d_fpga_read,
> +    invalid_read,
> +};
> +
> +static CPUWriteMemoryFunc *r2d_fpga_writefn[] = {
> +    r2d_fpga_write,
> +    r2d_fpga_write,
> +    invalid_write,
> +};
> +
> +static void r2d_fpga_init(uint32_t base)
> +{
> +    int iomemtype;
> +    r2d_fpga_t *s;
> +
> +    s = qemu_mallocz(sizeof(r2d_fpga_t));
> +    if (!s)
> +	return;
> +
> +    s->base = base;
> +    iomemtype = cpu_register_io_memory(0, r2d_fpga_readfn,
> +				       r2d_fpga_writefn, s);
> +    cpu_register_physical_memory(base, 0x40, iomemtype);
> +}
> +
>  static void r2d_init(ram_addr_t ram_size, int vga_ram_size,
>                const char *boot_device, DisplayState * ds,
>  	      const char *kernel_filename, const char *kernel_cmdline,
> @@ -50,6 +160,7 @@
>      /* Allocate memory space */
>      cpu_register_physical_memory(SDRAM_BASE, SDRAM_SIZE, 0);
>      /* Register peripherals */
> +    r2d_fpga_init(0x04000000);
>      s = sh7750_init(env);
>      /* Todo: register on board registers */
>      {
> 
> 
> 

-- 
  .''`.  Aurelien Jarno	            | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
 `. `'   aurel32@debian.org         | aurelien@aurel32.net
   `-    people.debian.org/~aurel32 | www.aurel32.net