Support variable-size SPI chip for dummy programmer.

flashchips.c

 /*
  * This file is part of the flashrom project.
  *
  * Copyright (C) 2000 Silicon Integrated System Corporation
  * Copyright (C) 2004 Tyan Corp
  * Copyright (C) 2005-2008 coresystems GmbH <stepan@openbios.org>
  * Copyright (C) 2006-2009 Carl-Daniel Hailfinger
  * Copyright (C) 2009 Sean Nelson <audiohacked@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ skipping 8057 matching lines @@
                 .page_size      = 256,
                 .tested         = TEST_BAD_PREW,
                 .probe          = probe_spi_rdid,
                 .probe_timing   = TIMING_ZERO,
                 .write          = NULL,
                 .read           = NULL,
         },
 
         {
                 .vendor         = "Generic",
+                .name           = "Variable Size SPI chip",
+                .bustype        = CHIP_BUSTYPE_SPI,
+                .manufacture_id = VARIABLE_SIZE_MANUF_ID,
+                .model_id       = VARIABLE_SIZE_DEVICE_ID,
+                .total_size     = 64,  /* This size is set temporarily */
+                .page_size      = 256,
+                .tested         = TEST_OK_PREW,
+                .probe          = probe_variable_size,
+                .block_erasers  =
+                {
+                        {
+                                .eraseblocks = { {4 * 1024, 16} },
+                                .block_erase = spi_block_erase_20,
+                        }, {
+                                .eraseblocks = { {64 * 1024, 1} },
+                                .block_erase = spi_block_erase_d8,
+                        }
+                },
+                .write          = spi_chip_write_256,
+                .read           = spi_chip_read,
+        },
+
+        {
+                .vendor         = "Generic",
                 .name           = "unknown SPI chip (RDID)",
                 .bustype        = CHIP_BUSTYPE_SPI,
                 .manufacture_id = GENERIC_MANUF_ID,
                 .model_id       = GENERIC_DEVICE_ID,
                 .total_size     = 0,
                 .page_size      = 256,
                 .tested         = TEST_BAD_PREW,
                 .probe          = probe_spi_rdid,
                 .write          = NULL,
         },
         {
                 .vendor         = "Generic",
                 .name           = "unknown SPI chip (REMS)",
                 .bustype        = CHIP_BUSTYPE_SPI,
                 .manufacture_id = GENERIC_MANUF_ID,
                 .model_id       = GENERIC_DEVICE_ID,
                 .total_size     = 0,
                 .page_size      = 256,
                 .tested         = TEST_BAD_PREW,
                 .probe          = probe_spi_rems,
                 .write          = NULL,
         },
 
         { NULL  }
 };