Annotation of qemu/hw/etraxfs.c, revision 1.1.1.2

1.1       root        1: /*
                      2:  * QEMU ETRAX System Emulator
                      3:  *
                      4:  * Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB.
                      5:  *
                      6:  * Permission is hereby granted, free of charge, to any person obtaining a copy
                      7:  * of this software and associated documentation files (the "Software"), to deal
                      8:  * in the Software without restriction, including without limitation the rights
                      9:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
                     10:  * copies of the Software, and to permit persons to whom the Software is
                     11:  * furnished to do so, subject to the following conditions:
                     12:  *
                     13:  * The above copyright notice and this permission notice shall be included in
                     14:  * all copies or substantial portions of the Software.
                     15:  *
                     16:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
                     17:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
                     18:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
                     19:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
                     20:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
                     21:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
                     22:  * THE SOFTWARE.
                     23:  */
                     24: #include <time.h>
                     25: #include <sys/time.h>
                     26: #include "hw.h"
1.1.1.2 ! root       27: #include "net.h"
        !            28: #include "flash.h"
1.1       root       29: #include "sysemu.h"
1.1.1.2 ! root       30: #include "devices.h"
1.1       root       31: #include "boards.h"
                     32: 
1.1.1.2 ! root       33: #include "etraxfs.h"
        !            34: 
        !            35: #define FLASH_SIZE 0x2000000
        !            36: #define INTMEM_SIZE (128 * 1024)
        !            37: 
        !            38: static uint32_t bootstrap_pc;
1.1       root       39: 
                     40: static void main_cpu_reset(void *opaque)
                     41: {
                     42:     CPUState *env = opaque;
                     43:     cpu_reset(env);
                     44: 
1.1.1.2 ! root       45:     env->pc = bootstrap_pc;
1.1       root       46: }
                     47: 
                     48: static
1.1.1.2 ! root       49: void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
        !            50:                        const char *boot_device,
1.1       root       51:                        const char *kernel_filename, const char *kernel_cmdline,
                     52:                        const char *initrd_filename, const char *cpu_model)
                     53: {
                     54:     CPUState *env;
1.1.1.2 ! root       55:     struct etraxfs_pic *pic;
        !            56:     void *etraxfs_dmac;
        !            57:     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
1.1       root       58:     int kernel_size;
1.1.1.2 ! root       59:     int i;
        !            60:     ram_addr_t phys_ram;
        !            61:     ram_addr_t phys_flash;
        !            62:     ram_addr_t phys_intmem;
1.1       root       63: 
                     64:     /* init CPUs */
                     65:     if (cpu_model == NULL) {
                     66:         cpu_model = "crisv32";
                     67:     }
                     68:     env = cpu_init(cpu_model);
                     69:     qemu_register_reset(main_cpu_reset, env);
                     70: 
                     71:     /* allocate RAM */
1.1.1.2 ! root       72:     phys_ram = qemu_ram_alloc(ram_size);
        !            73:     cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
1.1       root       74: 
1.1.1.2 ! root       75:     /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the 
        !            76:        internal memory.  */
        !            77:     phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
        !            78:     cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
        !            79:                                  phys_intmem | IO_MEM_RAM);
        !            80: 
        !            81: 
        !            82:     phys_flash = qemu_ram_alloc(FLASH_SIZE);
        !            83:     i = drive_get_index(IF_PFLASH, 0, 0);
        !            84:     pflash_cfi02_register(0x0, phys_flash,
        !            85:                           i != -1 ? drives_table[i].bdrv : NULL, (64 * 1024),
        !            86:                           FLASH_SIZE >> 16,
        !            87:                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
        !            88:                           0x555, 0x2aa);
        !            89:     pic = etraxfs_pic_init(env, 0x3001c000);
        !            90:     etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10);
        !            91:     for (i = 0; i < 10; i++) {
        !            92:         /* On ETRAX, odd numbered channels are inputs.  */
        !            93:         etraxfs_dmac_connect(etraxfs_dmac, i, pic->irq + 7 + i, i & 1);
1.1       root       94:     }
                     95: 
1.1.1.2 ! root       96:     /* Add the two ethernet blocks.  */
        !            97:     eth[0] = etraxfs_eth_init(&nd_table[0], env, pic->irq + 25, 0x30034000, 1);
        !            98:     if (nb_nics > 1)
        !            99:         eth[1] = etraxfs_eth_init(&nd_table[1], env,
        !           100:                                   pic->irq + 26, 0x30036000, 2);
        !           101: 
        !           102:     /* The DMA Connector block is missing, hardwire things for now.  */
        !           103:     etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
        !           104:     etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
        !           105:     if (eth[1]) {
        !           106:         etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
        !           107:         etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
        !           108:     }
1.1       root      109: 
1.1.1.2 ! root      110:     /* 2 timers.  */
        !           111:     etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3001e000);
        !           112:     etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3005e000);
        !           113: 
        !           114:     for (i = 0; i < 4; i++) {
        !           115:         if (serial_hds[i]) {
        !           116:             etraxfs_ser_init(env, pic->irq + 0x14 + i,
        !           117:                              serial_hds[i], 0x30026000 + i * 0x2000);
        !           118:         }
        !           119:     }
1.1       root      120: 
1.1.1.2 ! root      121:     if (kernel_filename) {
        !           122:         uint64_t entry, high;
        !           123:         int kcmdline_len;
        !           124: 
        !           125:         /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis 
        !           126:            devboard SDK.  */
        !           127:         kernel_size = load_elf(kernel_filename, -0x80000000LL,
        !           128:                                &entry, NULL, &high);
        !           129:         bootstrap_pc = entry;
        !           130:         if (kernel_size < 0) {
        !           131:             /* Takes a kimage from the axis devboard SDK.  */
        !           132:             kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
        !           133:             bootstrap_pc = 0x40004000;
        !           134:             env->regs[9] = 0x40004000 + kernel_size;
        !           135:         }
        !           136:         env->regs[8] = 0x56902387; /* RAM init magic.  */
        !           137: 
        !           138:         if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
        !           139:             if (kcmdline_len > 256) {
        !           140:                 fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
        !           141:                 exit(1);
        !           142:             }
        !           143:             pstrcpy_targphys(high, 256, kernel_cmdline);
        !           144:             /* Let the kernel know we are modifying the cmdline.  */
        !           145:             env->regs[10] = 0x87109563;
        !           146:             env->regs[11] = high;
        !           147:         }
        !           148:     }
        !           149:     env->pc = bootstrap_pc;
1.1       root      150: 
1.1.1.2 ! root      151:     printf ("pc =%x\n", env->pc);
        !           152:     printf ("ram size =%ld\n", ram_size);
1.1       root      153: }
                    154: 
                    155: QEMUMachine bareetraxfs_machine = {
1.1.1.2 ! root      156:     .name = "bareetraxfs",
        !           157:     .desc = "Bare ETRAX FS board",
        !           158:     .init = bareetraxfs_init,
        !           159:     .ram_require = 0x8000000,
1.1       root      160: };

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