409dbce54b
A few machines need to translate the ELF header addresses into physical addresses. Currently the only possibility is to add a value to the addresses. This patch replaces the addend argument by and a translation function and an opaque passed to the function. A NULL function does not translate the address. The patch also convert all machines that have an addend, simplify the PowerPC kernel loading and fix the MIPS kernel loading using this new feature. Other machines may benefit from this feature. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
214 lines
7 KiB
C
214 lines
7 KiB
C
/*
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* Model of Petalogix linux reference design targeting Xilinx Spartan 3ADSP-1800
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* boards.
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*
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* Copyright (c) 2009 Edgar E. Iglesias.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "sysbus.h"
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#include "hw.h"
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#include "net.h"
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#include "flash.h"
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#include "sysemu.h"
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#include "devices.h"
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#include "boards.h"
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#include "device_tree.h"
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#include "xilinx.h"
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#include "loader.h"
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#include "elf.h"
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#define LMB_BRAM_SIZE (128 * 1024)
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#define FLASH_SIZE (16 * 1024 * 1024)
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static struct
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{
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uint32_t bootstrap_pc;
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uint32_t cmdline;
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uint32_t fdt;
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} boot_info;
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static void main_cpu_reset(void *opaque)
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{
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CPUState *env = opaque;
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cpu_reset(env);
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env->regs[5] = boot_info.cmdline;
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env->regs[7] = boot_info.fdt;
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env->sregs[SR_PC] = boot_info.bootstrap_pc;
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}
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#define BINARY_DEVICE_TREE_FILE "petalogix-s3adsp1800.dtb"
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static int petalogix_load_device_tree(target_phys_addr_t addr,
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uint32_t ramsize,
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target_phys_addr_t initrd_base,
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target_phys_addr_t initrd_size,
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const char *kernel_cmdline)
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{
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char *path;
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int fdt_size;
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#ifdef CONFIG_FDT
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void *fdt;
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int r;
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/* Try the local "mb.dtb" override. */
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fdt = load_device_tree("mb.dtb", &fdt_size);
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if (!fdt) {
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path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
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if (path) {
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fdt = load_device_tree(path, &fdt_size);
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qemu_free(path);
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}
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if (!fdt)
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return 0;
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}
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r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
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if (r < 0)
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fprintf(stderr, "couldn't set /chosen/bootargs\n");
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cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
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#else
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/* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
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to the kernel. */
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fdt_size = load_image_targphys("mb.dtb", addr, 0x10000);
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if (fdt_size < 0) {
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path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
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if (path) {
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fdt_size = load_image_targphys(path, addr, 0x10000);
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qemu_free(path);
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}
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}
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if (kernel_cmdline) {
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fprintf(stderr,
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"Warning: missing libfdt, cannot pass cmdline to kernel!\n");
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}
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#endif
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return fdt_size;
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}
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static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
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{
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return addr - 0x30000000LL;
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}
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static void
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petalogix_s3adsp1800_init(ram_addr_t ram_size,
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const char *boot_device,
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const char *kernel_filename,
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const char *kernel_cmdline,
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const char *initrd_filename, const char *cpu_model)
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{
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DeviceState *dev;
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CPUState *env;
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int kernel_size;
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DriveInfo *dinfo;
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int i;
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target_phys_addr_t ddr_base = 0x90000000;
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ram_addr_t phys_lmb_bram;
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ram_addr_t phys_ram;
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ram_addr_t phys_flash;
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qemu_irq irq[32], *cpu_irq;
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/* init CPUs */
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if (cpu_model == NULL) {
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cpu_model = "microblaze";
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}
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env = cpu_init(cpu_model);
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env->pvr.regs[10] = 0x0c000000; /* spartan 3a dsp family. */
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qemu_register_reset(main_cpu_reset, env);
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/* Attach emulated BRAM through the LMB. */
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phys_lmb_bram = qemu_ram_alloc(LMB_BRAM_SIZE);
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cpu_register_physical_memory(0x00000000, LMB_BRAM_SIZE,
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phys_lmb_bram | IO_MEM_RAM);
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phys_ram = qemu_ram_alloc(ram_size);
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cpu_register_physical_memory(ddr_base, ram_size, phys_ram | IO_MEM_RAM);
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phys_flash = qemu_ram_alloc(FLASH_SIZE);
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dinfo = drive_get(IF_PFLASH, 0, 0);
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pflash_cfi01_register(0xa0000000, phys_flash,
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dinfo ? dinfo->bdrv : NULL, (64 * 1024),
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FLASH_SIZE >> 16,
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1, 0x89, 0x18, 0x0000, 0x0);
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cpu_irq = microblaze_pic_init_cpu(env);
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dev = xilinx_intc_create(0x81800000, cpu_irq[0], 2);
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for (i = 0; i < 32; i++) {
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irq[i] = qdev_get_gpio_in(dev, i);
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}
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sysbus_create_simple("xilinx,uartlite", 0x84000000, irq[3]);
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/* 2 timers at irq 2 @ 62 Mhz. */
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xilinx_timer_create(0x83c00000, irq[0], 2, 62 * 1000000);
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xilinx_ethlite_create(&nd_table[0], 0x81000000, irq[1], 0, 0);
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if (kernel_filename) {
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uint64_t entry, low, high;
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int kcmdline_len;
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uint32_t base32;
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/* Boots a kernel elf binary. */
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kernel_size = load_elf(kernel_filename, NULL, NULL,
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&entry, &low, &high,
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1, ELF_MACHINE, 0);
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base32 = entry;
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if (base32 == 0xc0000000) {
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kernel_size = load_elf(kernel_filename, translate_kernel_address,
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NULL, &entry, NULL, NULL,
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1, ELF_MACHINE, 0);
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}
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/* Always boot into physical ram. */
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boot_info.bootstrap_pc = ddr_base + (entry & 0x0fffffff);
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if (kernel_size < 0) {
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/* If we failed loading ELF's try a raw image. */
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kernel_size = load_image_targphys(kernel_filename, ddr_base,
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ram_size);
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boot_info.bootstrap_pc = ddr_base;
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}
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boot_info.cmdline = ddr_base + kernel_size + 8192;
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if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
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pstrcpy_targphys("cmdline", boot_info.cmdline, 256, kernel_cmdline);
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}
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/* Provide a device-tree. */
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boot_info.fdt = boot_info.cmdline + 256;
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petalogix_load_device_tree(boot_info.fdt, ram_size,
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0, 0,
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kernel_cmdline);
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}
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}
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static QEMUMachine petalogix_s3adsp1800_machine = {
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.name = "petalogix-s3adsp1800",
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.desc = "Petalogix linux refdesign for xilinx Spartan 3ADSP1800",
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.init = petalogix_s3adsp1800_init,
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.is_default = 1
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};
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static void petalogix_s3adsp1800_machine_init(void)
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{
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qemu_register_machine(&petalogix_s3adsp1800_machine);
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}
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machine_init(petalogix_s3adsp1800_machine_init);
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