+
+/*
+ * Accessor functions replacing the "weak" functions in
+ * drivers/mtd/cfi_flash.c
+ *
+ * The NOR flash devices "behind" the FPGA's (Xilinx DS617)
+ * can only be read correctly in 16bit mode. We need to emulate
+ * 8bit and 32bit reads here in the board specific code.
+ */
+u8 flash_read8(void *addr)
+{
+ u16 val = __raw_readw((void *)((u32)addr & ~1));
+
+ if ((u32)addr & 1)
+ return val;
+
+ return val >> 8;
+}
+
+u32 flash_read32(void *addr)
+{
+ return (__raw_readw(addr) << 16) | __raw_readw((void *)((u32)addr + 2));
+}
+
+void flash_cmd_reset(flash_info_t *info)
+{
+ /*
+ * FLASH at address CONFIG_SYS_FLASH_BASE is a Spansion chip and
+ * needs the Spansion type reset commands. The other flash chip
+ * is located behind a FPGA (Xilinx DS617) and needs the Intel type
+ * reset command.
+ */
+ if (info->start[0] == CONFIG_SYS_FLASH_BASE)
+ flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
+ else
+ flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
+}