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@@ -81,9 +81,14 @@
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"net_nfs=tftp 200000 ${bootfile};run nfsargs addip;bootm\0" \
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"rootpath=/opt/eldk/ppc_8xx\0" \
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"bootfile=/tftpboot/TQM866M/uImage\0" \
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- "fdt_addr=40080000\0" \
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- "kernel_addr=400A0000\0" \
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+ "fdt_addr=400C0000\0" \
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+ "kernel_addr=40100000\0" \
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"ramdisk_addr=40280000\0" \
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+ "load=tftp 200000 ${u-boot}\0" \
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+ "update=protect off 40000000 +${filesize};" \
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+ "erase 40000000 +${filesize};" \
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+ "cp.b 200000 40000000 ${filesize};" \
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+ "protect on 40000000 +${filesize}\0" \
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""
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#define CONFIG_BOOTCOMMAND "run flash_self"
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@@ -215,7 +220,7 @@
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#define CFG_FLASH_BASE 0x40000000
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#define CFG_MONITOR_LEN (256 << 10) /* Reserve 256 kB for Monitor */
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#define CFG_MONITOR_BASE CFG_FLASH_BASE
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-#define CFG_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */
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+#define CFG_MALLOC_LEN (256 << 10) /* Reserve 256 kB for malloc() */
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/*
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* For booting Linux, the board info and command line data
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@@ -236,7 +241,7 @@
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#define CFG_ENV_IS_IN_FLASH 1
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#define CFG_ENV_OFFSET 0x40000 /* Offset of Environment Sector */
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#define CFG_ENV_SIZE 0x08000 /* Total Size of Environment Sector */
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-#define CFG_ENV_SECT_SIZE 0x20000 /* Total Size of Environment Sector */
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+#define CFG_ENV_SECT_SIZE 0x40000 /* Total Size of Environment Sector */
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/* Address and size of Redundant Environment Sector */
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#define CFG_ENV_OFFSET_REDUND (CFG_ENV_OFFSET+CFG_ENV_SECT_SIZE)
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@@ -421,26 +426,30 @@
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#define CFG_PTA_PER_CLK ((4096 * 64 * 1000) / (4 * 64))
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/*
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- * Memory Periodic Timer Prescaler
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- * Periodic timer for refresh, start with refresh rate for 40 MHz clock
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- * (CFG_8xx_CPUCLK_MIN / CFG_PTA_PER_CLK)
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+ * Periodic timer (MAMR[PTx]) for 4 * 7.8 us refresh (= 31.2 us per quad)
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+ *
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+ * CPUclock(MHz) * 31.2
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+ * CFG_MAMR_PTA = ----------------------------------- with DFBRG = 0
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+ * 2^(2*SCCR[DFBRG]) * MPTPR_PTP_DIV16
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+ *
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+ * CPU clock = 15 MHz: CFG_MAMR_PTA = 29 -> 4 * 7.73 us
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+ * CPU clock = 50 MHz: CFG_MAMR_PTA = 97 -> 4 * 7.76 us
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+ * CPU clock = 66 MHz: CFG_MAMR_PTA = 128 -> 4 * 7.75 us
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+ * CPU clock = 133 MHz: CFG_MAMR_PTA = 255 -> 4 * 7.67 us
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+ *
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+ * Value 97 is for 4 * 7.8 us at 50 MHz. So the refresh cycle requirement will
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+ * be met also in the default configuration, i.e. if environment variable
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+ * 'cpuclk' is not set.
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*/
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-#define CFG_MAMR_PTA 39
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+#define CFG_MAMR_PTA 97
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/*
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- * For 16 MBit, refresh rates could be 31.3 us
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- * (= 64 ms / 2K = 125 / quad bursts).
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- * For a simpler initialization, 15.6 us is used instead.
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- *
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- * #define CFG_MPTPR_2BK_2K MPTPR_PTP_DIV32 for 2 banks
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- * #define CFG_MPTPR_1BK_2K MPTPR_PTP_DIV64 for 1 bank
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+ * Memory Periodic Timer Prescaler Register (MPTPR) values.
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*/
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-#define CFG_MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */
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-#define CFG_MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */
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-
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-/* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit */
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-#define CFG_MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */
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-#define CFG_MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */
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+/* 4 * 7.8 us refresh (= 31.2 us per quad) at 50 MHz and PTA = 97 */
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+#define CFG_MPTPR_2BK_4K MPTPR_PTP_DIV16
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+/* 4 * 3.9 us refresh (= 15.6 us per quad) at 50 MHz and PTA = 97 */
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+#define CFG_MPTPR_2BK_8K MPTPR_PTP_DIV8
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/*
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* MAMR settings for SDRAM
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