Merge remote-tracking branch 'u-boot-atmel/master'

[platform/kernel/u-boot.git] / include / configs / sbc8548.h

diff --git a/include/configs/sbc8548.h b/include/configs/sbc8548.h
index 09245b5..2209ddf 100644 (file)
--- a/include/configs/sbc8548.h
+++ b/include/configs/sbc8548.h
@@ -124,7 +124,9 @@
  * A hardware errata caused the LBC SDRAM SPD and the DDR2 SPD
  * to collide, meaning you couldn't reliably read either. So
  * physically remove the LBC PC100 SDRAM module from the board
- * before enabling the two SPD options below.
+ * before enabling the two SPD options below, or check that you
+ * have the hardware fix on your board via "i2c probe" and looking
+ * for a device at 0x53.
  */
 #undef CONFIG_SPD_EEPROM               /* Use SPD EEPROM for DDR setup */
 #undef CONFIG_DDR_SPD
@@ -140,8 +142,13 @@
 #define CONFIG_DIMM_SLOTS_PER_CTLR     1
 #define CONFIG_CHIP_SELECTS_PER_CTRL   2
 
-/* I2C addresses of SPD EEPROMs */
+/*
+ * The hardware fix for the I2C address collision puts the DDR
+ * SPD at 0x53, but if we are running on an older board w/o the
+ * fix, it will still be at 0x51.  We check 0x53 1st.
+ */
 #define SPD_EEPROM_ADDRESS     0x51    /* CTLR 0 DIMM 0 */
+#define ALT_SPD_EEPROM_ADDRESS 0x53    /* CTLR 0 DIMM 0 */
 
 /*
  * Make sure required options are set
@@ -293,11 +300,10 @@
  * Note that most boards have a hardware errata where both the
  * LBC SDRAM and the DDR2 SDRAM decode at 0x51, making it impossible
  * to use CONFIG_DDR_SPD unless you physically remove the LBC DIMM.
+ * A hardware workaround is also available, see README.sbc8548 file.
  */
-#ifndef CONFIG_DDR_SPD
 #define CONFIG_SYS_LBC_SDRAM_BASE      0xf0000000      /* Localbus SDRAM */
 #define CONFIG_SYS_LBC_SDRAM_SIZE      128             /* LBC SDRAM is 128MB */
-#endif
 
 /*
  * Base Register 3 and Option Register 3 configure the 1st 1/2 SDRAM.
@@ -428,9 +434,6 @@
 
 /* Use the HUSH parser */
 #define CONFIG_SYS_HUSH_PARSER
-#ifdef CONFIG_SYS_HUSH_PARSER
-#define CONFIG_SYS_PROMPT_HUSH_PS2 "> "
-#endif
 
 /* pass open firmware flat tree */
 #define CONFIG_OF_LIBFDT               1
@@ -624,19 +627,19 @@
 #define CONFIG_BAUDRATE        115200
 
 #define        CONFIG_EXTRA_ENV_SETTINGS                               \
- "netdev=eth0\0"                                               \
- "uboot=" MK_STR(CONFIG_UBOOTPATH) "\0"                                \
- "tftpflash=tftpboot $loadaddr $uboot; "                       \
-       "protect off " MK_STR(CONFIG_SYS_TEXT_BASE) " +$filesize; "     \
-       "erase " MK_STR(CONFIG_SYS_TEXT_BASE) " +$filesize; "           \
-       "cp.b $loadaddr " MK_STR(CONFIG_SYS_TEXT_BASE) " $filesize; "   \
-       "protect on " MK_STR(CONFIG_SYS_TEXT_BASE) " +$filesize; "              \
-       "cmp.b $loadaddr " MK_STR(CONFIG_SYS_TEXT_BASE) " $filesize\0"  \
- "consoledev=ttyS0\0"                          \
- "ramdiskaddr=2000000\0"                       \
- "ramdiskfile=uRamdisk\0"                      \
- "fdtaddr=c00000\0"                            \
- "fdtfile=sbc8548.dtb\0"
+"netdev=eth0\0"                                                \
+"uboot=" __stringify(CONFIG_UBOOTPATH) "\0"                            \
+"tftpflash=tftpboot $loadaddr $uboot; "                        \
+       "protect off " __stringify(CONFIG_SYS_TEXT_BASE) " +$filesize; " \
+       "erase " __stringify(CONFIG_SYS_TEXT_BASE) " +$filesize; "      \
+       "cp.b $loadaddr " __stringify(CONFIG_SYS_TEXT_BASE) " $filesize; " \
+       "protect on " __stringify(CONFIG_SYS_TEXT_BASE) " +$filesize; " \
+       "cmp.b $loadaddr " __stringify(CONFIG_SYS_TEXT_BASE) " $filesize\0" \
+"consoledev=ttyS0\0"                           \
+"ramdiskaddr=2000000\0"                        \
+"ramdiskfile=uRamdisk\0"                       \
+"fdtaddr=c00000\0"                             \
+"fdtfile=sbc8548.dtb\0"
 
 #define CONFIG_NFSBOOTCOMMAND                                          \
    "setenv bootargs root=/dev/nfs rw "                                 \