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xemu/hw/petalogix_ml605_mmu.c
Blue Swirl d81e54de59 petalogix_ml605_mmu: remove unused variable 
Remove a write-only variable, spotted by GCC 4.6.0:
/src/qemu/hw/petalogix_ml605_mmu.c: In function 'petalogix_ml605_init':
/src/qemu/hw/petalogix_ml605_mmu.c:153:11: error: variable 'serial' set but not used [-Werror=unused-but-set-variable]

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-03-19 08:43:22 +00:00

267 lines
8.8 KiB
C
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/*
* Model of Petalogix linux reference design targeting Xilinx Spartan ml605
* board.
*
* Copyright (c) 2011 Michal Simek <monstr@monstr.eu>
* Copyright (c) 2011 PetaLogix
* Copyright (c) 2009 Edgar E. Iglesias.
*
* 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 "sysbus.h"
#include "hw.h"
#include "net.h"
#include "flash.h"
#include "sysemu.h"
#include "devices.h"
#include "boards.h"
#include "device_tree.h"
#include "xilinx.h"
#include "loader.h"
#include "elf.h"
#include "blockdev.h"
#include "pc.h"
#include "xilinx_axidma.h"
#define LMB_BRAM_SIZE (128 * 1024)
#define FLASH_SIZE (32 * 1024 * 1024)
static struct
{
uint32_t bootstrap_pc;
uint32_t cmdline;
uint32_t fdt;
} boot_info;
static void main_cpu_reset(void *opaque)
{
CPUState *env = opaque;
cpu_reset(env);
env->regs[5] = boot_info.cmdline;
env->regs[7] = boot_info.fdt;
env->sregs[SR_PC] = boot_info.bootstrap_pc;
env->pvr.regs[10] = 0x0e000000; /* virtex 6 */
/* setup pvr to match kernel setting */
env->pvr.regs[5] |= PVR5_DCACHE_WRITEBACK_MASK;
env->pvr.regs[0] |= PVR0_USE_FPU_MASK | PVR0_ENDI;
env->pvr.regs[0] = (env->pvr.regs[0] & ~PVR0_VERSION_MASK) | (0x14 << 8);
env->pvr.regs[2] ^= PVR2_USE_FPU2_MASK;
env->pvr.regs[4] = 0xc56b8000;
env->pvr.regs[5] = 0xc56be000;
}
#define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb"
static int petalogix_load_device_tree(target_phys_addr_t addr,
uint32_t ramsize,
target_phys_addr_t initrd_base,
target_phys_addr_t initrd_size,
const char *kernel_cmdline)
{
char *path;
int fdt_size;
#ifdef CONFIG_FDT
void *fdt;
int r;
/* Try the local "mb.dtb" override. */
fdt = load_device_tree("mb.dtb", &fdt_size);
if (!fdt) {
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (path) {
fdt = load_device_tree(path, &fdt_size);
qemu_free(path);
}
if (!fdt) {
return 0;
}
}
r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
if (r < 0) {
fprintf(stderr, "couldn't set /chosen/bootargs\n");
}
cpu_physical_memory_write(addr, (void *)fdt, fdt_size);
#else
/* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
to the kernel. */
fdt_size = load_image_targphys("mb.dtb", addr, 0x10000);
if (fdt_size < 0) {
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (path) {
fdt_size = load_image_targphys(path, addr, 0x10000);
qemu_free(path);
}
}
if (kernel_cmdline) {
fprintf(stderr,
"Warning: missing libfdt, cannot pass cmdline to kernel!\n");
}
#endif
return fdt_size;
}
static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
{
return addr - 0x30000000LL;
}
#define MEMORY_BASEADDR 0x50000000
#define FLASH_BASEADDR 0x86000000
#define INTC_BASEADDR 0x81800000
#define TIMER_BASEADDR 0x83c00000
#define UART16550_BASEADDR 0x83e00000
#define AXIENET_BASEADDR 0x82780000
#define AXIDMA_BASEADDR 0x84600000
static void
petalogix_ml605_init(ram_addr_t ram_size,
const char *boot_device,
const char *kernel_filename,
const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
DeviceState *dev;
CPUState *env;
int kernel_size;
DriveInfo *dinfo;
int i;
target_phys_addr_t ddr_base = MEMORY_BASEADDR;
ram_addr_t phys_lmb_bram;
ram_addr_t phys_ram;
ram_addr_t phys_flash;
qemu_irq irq[32], *cpu_irq;
/* init CPUs */
if (cpu_model == NULL) {
cpu_model = "microblaze";
}
env = cpu_init(cpu_model);
qemu_register_reset(main_cpu_reset, env);
/* Attach emulated BRAM through the LMB. */
phys_lmb_bram = qemu_ram_alloc(NULL, "petalogix_ml605.lmb_bram",
LMB_BRAM_SIZE);
cpu_register_physical_memory(0x00000000, LMB_BRAM_SIZE,
phys_lmb_bram | IO_MEM_RAM);
phys_ram = qemu_ram_alloc(NULL, "petalogix_ml605.ram", ram_size);
cpu_register_physical_memory(ddr_base, ram_size, phys_ram | IO_MEM_RAM);
phys_flash = qemu_ram_alloc(NULL, "petalogix_ml605.flash", FLASH_SIZE);
dinfo = drive_get(IF_PFLASH, 0, 0);
/* 5th parameter 2 means bank-width
* 10th paremeter 0 means little-endian */
pflash_cfi01_register(FLASH_BASEADDR, phys_flash,
dinfo ? dinfo->bdrv : NULL, (64 * 1024),
FLASH_SIZE >> 16,
2, 0x89, 0x18, 0x0000, 0x0, 0);
cpu_irq = microblaze_pic_init_cpu(env);
dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 4);
for (i = 0; i < 32; i++) {
irq[i] = qdev_get_gpio_in(dev, i);
}
serial_mm_init(UART16550_BASEADDR + 0x1000, 2, irq[5], 115200,
serial_hds[0], 1, 0);
/* 2 timers at irq 2 @ 100 Mhz. */
xilinx_timer_create(TIMER_BASEADDR, irq[2], 2, 100 * 1000000);
/* axi ethernet and dma initialization. TODO: Dynamically connect them. */
{
static struct XilinxDMAConnection dmach;
xilinx_axiethernet_create(&dmach, &nd_table[0], 0x82780000,
irq[3], 0x1000, 0x1000);
xilinx_axiethernetdma_create(&dmach, 0x84600000,
irq[1], irq[0], 100 * 1000000);
}
if (kernel_filename) {
uint64_t entry, low, high;
uint32_t base32;
int big_endian = 0;
#ifdef TARGET_WORDS_BIGENDIAN
big_endian = 1;
#endif
/* Boots a kernel elf binary. */
kernel_size = load_elf(kernel_filename, NULL, NULL,
&entry, &low, &high,
big_endian, ELF_MACHINE, 0);
base32 = entry;
if (base32 == 0xc0000000) {
kernel_size = load_elf(kernel_filename, translate_kernel_address,
NULL, &entry, NULL, NULL,
big_endian, ELF_MACHINE, 0);
}
/* Always boot into physical ram. */
boot_info.bootstrap_pc = ddr_base + (entry & 0x0fffffff);
/* If it wasn't an ELF image, try an u-boot image. */
if (kernel_size < 0) {
target_phys_addr_t uentry, loadaddr;
kernel_size = load_uimage(kernel_filename, &uentry, &loadaddr, 0);
boot_info.bootstrap_pc = uentry;
high = (loadaddr + kernel_size + 3) & ~3;
}
/* Not an ELF image nor an u-boot image, try a RAW image. */
if (kernel_size < 0) {
kernel_size = load_image_targphys(kernel_filename, ddr_base,
ram_size);
boot_info.bootstrap_pc = ddr_base;
high = (ddr_base + kernel_size + 3) & ~3;
}
boot_info.cmdline = high + 4096;
if (kernel_cmdline && strlen(kernel_cmdline)) {
pstrcpy_targphys("cmdline", boot_info.cmdline, 256, kernel_cmdline);
}
/* Provide a device-tree. */
boot_info.fdt = boot_info.cmdline + 4096;
petalogix_load_device_tree(boot_info.fdt, ram_size,
0, 0,
kernel_cmdline);
}
}
static QEMUMachine petalogix_ml605_machine = {
.name = "petalogix-ml605",
.desc = "PetaLogix linux refdesign for xilinx ml605 little endian",
.init = petalogix_ml605_init,
.is_default = 0
};
static void petalogix_ml605_machine_init(void)
{
qemu_register_machine(&petalogix_ml605_machine);
}
machine_init(petalogix_ml605_machine_init);
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