Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 1 | #include <stdio.h>
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| 2 | #include <stdlib.h>
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| 3 | #include <string.h>
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| 4 | #include <fcntl.h>
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| 5 | #include <sys/mman.h>
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| 6 | #include <sys/types.h>
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| 7 | #include <sys/stat.h>
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| 8 | #include <unistd.h>
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| 9 | #include <byteswap.h>
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| 10 | #include <stdint.h>
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| 11 | #include <stdbool.h>
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| 12 | #include <getopt.h>
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| 13 | #include <limits.h>
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| 14 | #include <arpa/inet.h>
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| 15 | #include <assert.h>
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| 16 |
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| 17 | #include <libflash/libflash.h>
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| 18 | #include <libflash/libffs.h>
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| 19 | #include "progress.h"
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| 20 | #include "io.h"
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| 21 | #include "ast.h"
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| 22 | #include "sfc-ctrl.h"
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| 23 | #include "interfaces/openbmc_intf.h"
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| 24 | #include "includes/openbmc.h"
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| 25 |
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| 26 | static const gchar* dbus_object_path = "/org/openbmc/control";
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| 27 | static const gchar* dbus_object_name = "Flasher_0";
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| 28 | static const gchar* dbus_name = "org.openbmc.control.Flasher";
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| 29 |
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| 30 | static GDBusObjectManagerServer *manager = NULL;
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| 31 |
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| 32 | #define __aligned(x) __attribute__((aligned(x)))
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| 33 |
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| 34 | #define PFLASH_VERSION "0.8.6"
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| 35 |
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| 36 | static bool must_confirm = false;
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| 37 | static bool dummy_run;
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| 38 | static bool need_relock;
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| 39 | static bool bmc_flash;
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| 40 | #ifdef __powerpc__
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| 41 | static bool using_sfc;
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| 42 | #endif
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| 43 |
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| 44 | #define FILE_BUF_SIZE 0x10000
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| 45 | static uint8_t file_buf[FILE_BUF_SIZE] __aligned(0x1000);
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| 46 |
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| 47 | static struct spi_flash_ctrl *fl_ctrl;
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| 48 | static struct flash_chip *fl_chip;
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| 49 | static struct ffs_handle *ffsh;
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| 50 | static uint32_t fl_total_size, fl_erase_granule;
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| 51 | static const char *fl_name;
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| 52 | static int32_t ffs_index = -1;
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| 53 |
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 54 | static uint8_t FLASH_OK = 0;
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 55 | static uint8_t FLASH_ERROR = 0x01;
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| 56 | static uint8_t FLASH_SETUP_ERROR = 0x02;
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Norman James | 7b1afb6 | 2015-10-28 20:28:37 -0500 | [diff] [blame] | 57 | static struct blocklevel_device *bl;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 58 |
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| 59 | static int erase_chip(void)
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| 60 | {
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| 61 | int rc = 0;
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| 62 |
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| 63 | printf("Erasing... (may take a while !) ");
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| 64 | fflush(stdout);
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| 65 |
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| 66 | rc = flash_erase_chip(fl_chip);
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| 67 | if (rc) {
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| 68 | fprintf(stderr, "Error %d erasing chip\n", rc);
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| 69 | return(rc);
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| 70 | }
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| 71 |
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| 72 | printf("done !\n");
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| 73 | return (rc);
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| 74 | }
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| 75 |
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Norman James | 7b1afb6 | 2015-10-28 20:28:37 -0500 | [diff] [blame] | 76 |
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 77 | void flash_message(GDBusConnection* connection,char* obj_path,char* method, char* error_msg)
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| 78 | {
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| 79 | GDBusProxy *proxy;
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| 80 | GError *error;
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| 81 | GVariant *parm = NULL;
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| 82 | GVariant *result;
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| 83 | error = NULL;
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| 84 | proxy = g_dbus_proxy_new_sync (connection,
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| 85 | G_DBUS_PROXY_FLAGS_NONE,
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| 86 | NULL, /* GDBusInterfaceInfo* */
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| 87 | "org.openbmc.control.Flash", /* name */
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| 88 | obj_path, /* object path */
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| 89 | "org.openbmc.Flash", /* interface name */
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| 90 | NULL, /* GCancellable */
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| 91 | &error);
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| 92 | g_assert_no_error (error);
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| 93 |
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| 94 | error = NULL;
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| 95 | if (strcmp(method,"error")==0) {
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| 96 | parm = g_variant_new("(s)",error_msg);
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| 97 | }
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| 98 | result = g_dbus_proxy_call_sync (proxy,
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| 99 | method,
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| 100 | parm,
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| 101 | G_DBUS_CALL_FLAGS_NONE,
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| 102 | -1,
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| 103 | NULL,
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| 104 | &error);
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| 105 |
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| 106 | g_assert_no_error (error);
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| 107 | }
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| 108 |
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| 109 |
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 110 | static int program_file(FlashControl* flash_control, const char *file, uint32_t start, uint32_t size)
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| 111 | {
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| 112 | int fd, rc;
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| 113 | ssize_t len;
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| 114 | uint32_t actual_size = 0;
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| 115 |
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| 116 | fd = open(file, O_RDONLY);
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| 117 | if (fd == -1) {
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| 118 | perror("Failed to open file");
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| 119 | return(fd);
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| 120 | }
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| 121 | printf("About to program \"%s\" at 0x%08x..0x%08x !\n",
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| 122 | file, start, size);
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| 123 |
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| 124 | printf("Programming & Verifying...\n");
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| 125 | //progress_init(size >> 8);
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| 126 | unsigned int save_size = size;
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| 127 | uint8_t last_progress = 0;
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| 128 | while(size) {
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| 129 | len = read(fd, file_buf, FILE_BUF_SIZE);
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| 130 | if (len < 0) {
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| 131 | perror("Error reading file");
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| 132 | return(1);
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| 133 | }
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| 134 | if (len == 0)
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| 135 | break;
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| 136 | if (len > size)
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| 137 | len = size;
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| 138 | size -= len;
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| 139 | actual_size += len;
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| 140 | rc = flash_write(fl_chip, start, file_buf, len, true);
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| 141 | if (rc) {
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| 142 | if (rc == FLASH_ERR_VERIFY_FAILURE)
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| 143 | fprintf(stderr, "Verification failed for"
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| 144 | " chunk at 0x%08x\n", start);
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| 145 | else
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| 146 | fprintf(stderr, "Flash write error %d for"
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| 147 | " chunk at 0x%08x\n", rc, start);
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| 148 | return(rc);
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| 149 | }
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| 150 | start += len;
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| 151 | unsigned int percent = (100*actual_size/save_size);
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| 152 | uint8_t progress = (uint8_t) (percent);
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| 153 | if (progress != last_progress) {
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| 154 | flash_control_emit_progress(flash_control,file,progress);
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| 155 | last_progress = progress;
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| 156 | }
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| 157 | }
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| 158 | close(fd);
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| 159 |
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| 160 | /* If this is a flash partition, adjust its size */
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| 161 | if (ffsh && ffs_index >= 0) {
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| 162 | printf("Updating actual size in partition header...\n");
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| 163 | ffs_update_act_size(ffsh, ffs_index, actual_size);
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| 164 | }
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| 165 | return(0);
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| 166 | }
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| 167 |
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| 168 | static void do_read_file(const char *file, uint32_t start, uint32_t size)
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| 169 | {
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| 170 | int fd, rc;
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| 171 | ssize_t len;
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| 172 | uint32_t done = 0;
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| 173 |
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| 174 | fd = open(file, O_WRONLY | O_TRUNC | O_CREAT, 00666);
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| 175 | if (fd == -1) {
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| 176 | perror("Failed to open file");
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| 177 | exit(1);
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| 178 | }
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| 179 | printf("Reading to \"%s\" from 0x%08x..0x%08x !\n",
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| 180 | file, start, size);
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| 181 |
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| 182 | progress_init(size >> 8);
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| 183 | while(size) {
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| 184 | len = size > FILE_BUF_SIZE ? FILE_BUF_SIZE : size;
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| 185 | rc = flash_read(fl_chip, start, file_buf, len);
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| 186 | if (rc) {
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| 187 | fprintf(stderr, "Flash read error %d for"
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| 188 | " chunk at 0x%08x\n", rc, start);
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| 189 | exit(1);
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| 190 | }
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| 191 | rc = write(fd, file_buf, len);
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| 192 | if (rc < 0) {
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| 193 | perror("Error writing file");
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| 194 | exit(1);
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| 195 | }
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| 196 | start += len;
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| 197 | size -= len;
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| 198 | done += len;
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| 199 | progress_tick(done >> 8);
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| 200 | }
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| 201 | progress_end();
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| 202 | close(fd);
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| 203 | }
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| 204 | static void flash_access_cleanup_bmc(void)
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| 205 | {
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| 206 | if (ffsh)
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| 207 | ffs_close(ffsh);
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| 208 | flash_exit(fl_chip);
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| 209 | ast_sf_close(fl_ctrl);
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| 210 | close_devs();
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| 211 | }
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| 212 |
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 213 | static int flash_access_setup_bmc(bool use_lpc, bool need_write)
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 214 | {
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| 215 | int rc;
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 216 | printf("Setting up BMC flash\n");
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 217 | /* Open and map devices */
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| 218 | open_devs(use_lpc, true);
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| 219 |
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| 220 | /* Create the AST flash controller */
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| 221 | rc = ast_sf_open(AST_SF_TYPE_BMC, &fl_ctrl);
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| 222 | if (rc) {
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| 223 | fprintf(stderr, "Failed to open controller\n");
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 224 | return FLASH_SETUP_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 225 | }
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| 226 |
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| 227 | /* Open flash chip */
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| 228 | rc = flash_init(fl_ctrl, &fl_chip);
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| 229 | if (rc) {
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| 230 | fprintf(stderr, "Failed to open flash chip\n");
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 231 | return FLASH_SETUP_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 232 | }
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| 233 |
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| 234 | /* Setup cleanup function */
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| 235 | atexit(flash_access_cleanup_bmc);
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 236 | return FLASH_OK;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 237 | }
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| 238 |
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| 239 | static void flash_access_cleanup_pnor(void)
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| 240 | {
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| 241 | /* Re-lock flash */
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| 242 | if (need_relock)
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| 243 | set_wrprotect(true);
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| 244 |
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| 245 | if (ffsh)
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| 246 | ffs_close(ffsh);
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| 247 | flash_exit(fl_chip);
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| 248 | #ifdef __powerpc__
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| 249 | if (using_sfc)
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| 250 | sfc_close(fl_ctrl);
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| 251 | else
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| 252 | ast_sf_close(fl_ctrl);
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| 253 | #else
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| 254 | ast_sf_close(fl_ctrl);
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| 255 | #endif
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| 256 | close_devs();
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| 257 | }
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| 258 |
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 259 | static int flash_access_setup_pnor(bool use_lpc, bool use_sfc, bool need_write)
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 260 | {
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| 261 | int rc;
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 262 | printf("Setting up BIOS flash\n");
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 263 |
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| 264 | /* Open and map devices */
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| 265 | open_devs(use_lpc, false);
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| 266 |
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| 267 | #ifdef __powerpc__
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| 268 | if (use_sfc) {
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| 269 | /* Create the SFC flash controller */
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| 270 | rc = sfc_open(&fl_ctrl);
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| 271 | if (rc) {
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| 272 | fprintf(stderr, "Failed to open controller\n");
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 273 | return FLASH_SETUP_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 274 | }
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| 275 | using_sfc = true;
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| 276 | } else {
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| 277 | #endif
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| 278 | /* Create the AST flash controller */
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| 279 | rc = ast_sf_open(AST_SF_TYPE_PNOR, &fl_ctrl);
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| 280 | if (rc) {
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| 281 | fprintf(stderr, "Failed to open controller\n");
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 282 | return FLASH_SETUP_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 283 | }
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| 284 | #ifdef __powerpc__
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| 285 | }
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| 286 | #endif
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| 287 |
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| 288 | /* Open flash chip */
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| 289 | rc = flash_init(fl_ctrl, &fl_chip);
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| 290 | if (rc) {
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| 291 | fprintf(stderr, "Failed to open flash chip\n");
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 292 | return FLASH_SETUP_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 293 | }
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| 294 |
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| 295 | /* Unlock flash (PNOR only) */
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| 296 | if (need_write)
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| 297 | need_relock = set_wrprotect(false);
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| 298 |
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| 299 | /* Setup cleanup function */
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| 300 | atexit(flash_access_cleanup_pnor);
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 301 | return FLASH_OK;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 302 | }
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| 303 |
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Norman James | 15aaa80 | 2015-10-28 06:54:48 -0500 | [diff] [blame] | 304 | uint8_t flash(FlashControl* flash_control,bool bmc_flash, uint32_t address, char* write_file, char* obj_path)
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 305 | {
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| 306 | bool has_sfc = false, has_ast = false, use_lpc = true;
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| 307 | bool erase = true, program = true;
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Norman James | 15aaa80 | 2015-10-28 06:54:48 -0500 | [diff] [blame] | 308 |
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 309 | int rc;
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Norman James | 15aaa80 | 2015-10-28 06:54:48 -0500 | [diff] [blame] | 310 | printf("flasher: %s, BMC = %d, address = 0x%x\n",write_file,bmc_flash,address);
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 311 | #ifdef __arm__
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| 312 | /* Check platform */
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| 313 | check_platform(&has_sfc, &has_ast);
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| 314 |
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| 315 | /* Prepare for access */
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| 316 | if (bmc_flash) {
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| 317 | if (!has_ast) {
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| 318 | fprintf(stderr, "No BMC on this platform\n");
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 319 | return FLASH_SETUP_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 320 | }
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 321 | rc = flash_access_setup_bmc(use_lpc, erase || program);
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| 322 | if (rc) {
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| 323 | return FLASH_SETUP_ERROR;
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| 324 | }
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 325 | } else {
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| 326 | if (!has_ast && !has_sfc) {
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| 327 | fprintf(stderr, "No BMC nor SFC on this platform\n");
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 328 | return FLASH_SETUP_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 329 | }
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 330 | rc = flash_access_setup_pnor(use_lpc, has_sfc, erase || program);
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| 331 | if (rc) {
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| 332 | return FLASH_SETUP_ERROR;
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| 333 | }
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 334 | }
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| 335 |
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| 336 | rc = flash_get_info(fl_chip, &fl_name,
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| 337 | &fl_total_size, &fl_erase_granule);
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| 338 | if (rc) {
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| 339 | fprintf(stderr, "Error %d getting flash info\n", rc);
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 340 | return FLASH_SETUP_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 341 | }
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| 342 | #endif
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| 343 | if (strcmp(write_file,"")!=0)
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| 344 | {
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| 345 | // If file specified but not size, get size from file
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| 346 | struct stat stbuf;
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| 347 | if (stat(write_file, &stbuf)) {
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| 348 | perror("Failed to get file size");
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 349 | return FLASH_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 350 | }
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| 351 | uint32_t write_size = stbuf.st_size;
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| 352 | #ifdef __arm__
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| 353 | rc = erase_chip();
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| 354 | if (rc) {
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 355 | return FLASH_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 356 | }
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| 357 | rc = program_file(flash_control, write_file, address, write_size);
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| 358 | if (rc) {
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 359 | return FLASH_ERROR;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 360 | }
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| 361 | #endif
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| 362 |
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 363 | printf("Flash done\n");
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| 364 | }
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| 365 | else
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| 366 | {
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 367 | printf("Flash tuned\n");
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 368 | //tune twice
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| 369 | if (!bmc_flash) {
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| 370 | flash_access_setup_pnor(use_lpc, has_sfc, erase || program);
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| 371 | }
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 372 | }
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 373 | return FLASH_OK;
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 374 | }
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| 375 |
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| 376 | static void
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| 377 | on_bus_acquired (GDBusConnection *connection,
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| 378 | const gchar *name,
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| 379 | gpointer user_data)
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| 380 | {
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| 381 |
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| 382 | cmdline *cmd = user_data;
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 383 | if (cmd->argc < 4)
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 384 | {
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 385 | g_print("flasher [flash name] [filename] [source object]\n");
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Norman James | bb145c9 | 2015-11-01 07:37:47 -0600 | [diff] [blame] | 386 | g_main_loop_quit(cmd->loop);
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 387 | return;
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| 388 | }
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 389 | printf("Starting flasher: %s,%s,%s,\n",cmd->argv[1],cmd->argv[2],cmd->argv[3]);
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 390 | ObjectSkeleton *object;
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| 391 | manager = g_dbus_object_manager_server_new (dbus_object_path);
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| 392 | gchar *s;
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| 393 | s = g_strdup_printf ("%s/%s",dbus_object_path,cmd->argv[1]);
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| 394 |
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| 395 | object = object_skeleton_new (s);
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| 396 | g_free (s);
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| 397 |
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| 398 | FlashControl* flash_control = flash_control_skeleton_new ();
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| 399 | object_skeleton_set_flash_control (object, flash_control);
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| 400 | g_object_unref (flash_control);
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| 401 |
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| 402 | /* Export the object (@manager takes its own reference to @object) */
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| 403 | g_dbus_object_manager_server_export (manager, G_DBUS_OBJECT_SKELETON (object));
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| 404 | g_object_unref (object);
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| 405 |
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| 406 | /* Export all objects */
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| 407 | g_dbus_object_manager_server_set_connection (manager, connection);
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 408 | bool bmc_flash = false;
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Norman James | 15aaa80 | 2015-10-28 06:54:48 -0500 | [diff] [blame] | 409 | uint32_t address = 0;
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 410 | if (strcmp(cmd->argv[1],"bmc")==0) {
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| 411 | bmc_flash = true;
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| 412 | }
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Norman James | 15aaa80 | 2015-10-28 06:54:48 -0500 | [diff] [blame] | 413 | if (strcmp(cmd->argv[1],"bmc_ramdisk")==0) {
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| 414 | bmc_flash = true;
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| 415 | address = 0x20300000;
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| 416 | }
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| 417 | if (strcmp(cmd->argv[1],"bmc_kernel")==0) {
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| 418 | bmc_flash = true;
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| 419 | address = 0x20080000;
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| 420 | }
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| 421 |
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| 422 | int rc = flash(flash_control,bmc_flash,address,cmd->argv[2],cmd->argv[3]);
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Norman James | 05028c9 | 2015-11-01 19:14:25 -0600 | [diff] [blame] | 423 | if (rc) {
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Norman James | 166acf4 | 2015-10-22 07:11:51 -0500 | [diff] [blame] | 424 | flash_message(connection,cmd->argv[3],"error","Flash Error");
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| 425 | } else {
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| 426 | flash_message(connection,cmd->argv[3],"done","");
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| 427 | }
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Norman James | c0d94e0 | 2015-10-13 10:06:12 -0500 | [diff] [blame] | 428 |
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| 429 | //Object exits when done flashing
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| 430 | g_main_loop_quit(cmd->loop);
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| 431 | }
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| 432 |
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| 433 | int main(int argc, char *argv[])
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| 434 | {
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| 435 |
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| 436 | GMainLoop *loop;
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| 437 | cmdline cmd;
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| 438 | cmd.argc = argc;
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| 439 | cmd.argv = argv;
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| 440 |
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| 441 | guint id;
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| 442 | loop = g_main_loop_new (NULL, FALSE);
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| 443 | cmd.loop = loop;
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| 444 |
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| 445 | id = g_bus_own_name (DBUS_TYPE,
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| 446 | dbus_name,
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| 447 | G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT |
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| 448 | G_BUS_NAME_OWNER_FLAGS_REPLACE,
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| 449 | on_bus_acquired,
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| 450 | NULL,
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| 451 | NULL,
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| 452 | &cmd,
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| 453 | NULL);
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| 454 |
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| 455 | g_main_loop_run (loop);
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| 456 |
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| 457 | g_bus_unown_name (id);
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| 458 | g_main_loop_unref (loop);
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| 459 |
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| 460 | return 0;
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| 461 | }
|