Patches by Jon Loeliger, 11 May 2004:
(partially, as they contained a lot of crap)
diff --git a/doc/README.mpc85xxads b/doc/README.mpc85xxads
index f78c9c6..4c1686f 100644
--- a/doc/README.mpc85xxads
+++ b/doc/README.mpc85xxads
@@ -13,36 +13,44 @@
shipped with your board. Then apply the following changes:
SW3[1-6]="all OFF" (boot from 32bit flash, no boot sequence is used)
SW10[2-6]="all OFF" (turn on CPM SCC for serial port,works for 8540/8560)
- SW11[2]='OFF for dracom, ON for draco' (single switch to toggle draco.dracom mode)
+ SW11[2]='OFF for 8560, ON for 8540' (single switch to toggle 8540.8560 mode)
+ SW11[7]='ON' (rev2), 'OFF' (rev1)
SW4[7-8]="OFF OFF" (enable serial ports,I'm using the top serial connector)
SW22[1-4]="OFF OFF ON OFF"
SW5[1-10[="ON ON OFF OFF OFF OFF OFF OFF OFF OFF"
J1 = "Enable Prog" (Make sure your flash is programmable for development)
- Ethernet PHY connectors(J47,J56) should be removed if you want to use the ethernet.
-1.2 If you want to test PCI functionality with a 33Mhz PCI card, you will have to change
- the system clock from the default 66Mhz to 33Mhz by setting SW15[1]="OFF" and
- SW17[8]="OFF". After that you may also need double your platform clock(SW6) because
- the system clock is now only half of its original value.
-1.3 SW6 is a very important switch, it decides your platform clock and CPU clock based on
- the on-board system clock(default 66MHz). Check the document along with your board
- for details.
+1.2 If you want to test PCI functionality with a 33Mhz PCI card, you will
+ have to change the system clock from the default 66Mhz to 33Mhz by
+ setting SW15[1]="OFF" and SW17[8]="OFF". After that you may also need
+ double your platform clock(SW6) because the system clock is now only
+ half of its original value.
+1.3 SW6 is a very important switch, it decides your platform clock and CPU
+ clock based on the on-board system clock(default 66MHz). Check the
+ document along with your board for details.
+
2. MEMORY MAP TO WORK WITH LINUX KERNEL
-2.1. For the initial bringup, we adopted a consistent memory scheme between u-boot and
- linux kernel, you can customize it based on your system requirements:
- DDR: 0x00000000-0x1fffffff (max 512MB)
- PCI: 0xe0000000-0xefffffff (256MB)
- RIO: 0xf0000000-0xf7ffffff (128MB)
- Local SDRAM: 0xf8000000-0xfbffffff (64MB)
- Local CSx: 0xfc000000-0xfdefffff (31MB) BCSR,RTC,ATM config,etc.
- CCSRBAR: 0xfdf00000-0xfdffffff (1MB)
- Flash: 0xfe000000-0xffffffff (max 32MB)
-2.2 We are submitting Linux kernel patches for MPC8540 and MPC8560. Hope you will be
- able to download them from linuxppc-2.4 public source by the time you are reading
- this. Please make sure the kernel's ppcboot.h is consistent with U-Boot's u-boot.h,
- then you can use two default configuration files in the kernel source as a test:
- arch/ppc/configs/mpc8540ads_defconfig
- arch/ppc/configs/mpc8560ads_defconfig
+
+2.1. For the initial bringup, we adopted a consistent memory scheme
+ between u-boot and linux kernel, you can customize it based on your
+ system requirements:
+
+ 0x0000_0000 0x7fff_ffff DDR 2G
+ 0x8000_0000 0x9fff_ffff PCI MEM 512M
+ 0xc000_0000 0xdfff_ffff Rapid IO 512M
+ 0xe000_0000 0xe000_ffff CCSR 1M
+ 0xe200_0000 0xe2ff_ffff PCI IO 16M
+ 0xf000_0000 0xf7ff_ffff SDRAM 128M
+ 0xf800_0000 0xf80f_ffff BCSR 1M
+ 0xff00_0000 0xffff_ffff FLASH (boot bank) 16M
+
+2.2 We are submitting Linux kernel patches for MPC8540 and MPC8560. You
+ can download them from linuxppc-2.4 public source. Please make sure the
+ kernel's ppcboot.h is consistent with U-Boot's u-boot.h. You can use two
+ default configuration files as your starting points to configure the
+ kernel:
+ arch/ppc/configs/mpc8540_ads_defconfig
+ arch/ppc/configs/mpc8560_ads_defconfig
3. DEFINITIONS AND COMPILATION
3.1 Explanation on NEW definitions in include/configs/MPC8540ADS.h and include/
@@ -50,9 +58,6 @@
CONFIG_BOOKE BOOKE(e.g. Motorola MPC85xx, IBM 440, etc)
CONFIG_E500 BOOKE e500 family(Motorola)
CONFIG_MPC85xx MPC8540,MPC8560 and their derivatives
- CONFIG_MPC85xx_REV1 MPC85xx Rev 1 Chip, in general you will use a Rev2
- chip from Nov.2003. If you still see this definition
- while you have a Rev2(and newer) chip,undef this.
CONFIG_MPC8540 MPC8540 specific
CONFIG_MPC8560 MPC8560 specific
CONFIG_MPC8540ADS MPC8540ADS board specific
@@ -61,8 +66,7 @@
CONFIG_SPD_EEPROM Use SPD EEPROM for DDR auto configuration, you can also
manual config the DDR after undef this definition.
CONFIG_DDR_ECC only for ECC DDR module
- CONFIG_DDR_DLL possible DLL fix needed for Rev1 chip for more stability.
- you can disable this if you're having a newer chip.
+ CONFIG_DDR_DLL DLL fix on some ADS boards needed for more stability.
CONFIG_RAM_AS_FLASH after define this, you can load U-Boot into localbus
SDRAM and treat localbus SDRAM as a flash. We use this
memory based U-Boot before flash is working while Metrowerks
@@ -78,8 +82,19 @@
make MPC8560ADS_config (or make MPC8540ADS_config)
make
-4. Note on the 10/100/1000 Ethernet controller:
-4.1 Sometimes after U-Boot is up, the 'tftp' won't work well with TSEC ethernet. If that
+4. Notes:
+4.1 When connecting with kermit, the following commands must be present.in
+ your .kermrc file. These are especially important when booting as
+ MPC8560, as the serial console will not work without them:
+
+set speed 115200
+set carrier-watch off
+set handshake none
+set flow-control none
+robust
+
+
+4.2 Sometimes after U-Boot is up, the 'tftp' won't work well with TSEC ethernet. If that
happens, you can try the following steps to make network work:
MPC8560ADS>tftp 1000000 pImage
(if it hangs, use Ctrl-C to quit)
@@ -88,6 +103,17 @@
>1
>. (to quit this memory operation)
MPC8560ADS>tftp 1000000 pImage
+4.3 If you're one of the early developers using the Rev1 8540/8560 chips, please use U-Boot
+ 1.0.0, as the newer silicon will only support Rev2 and future revisions of 8540/8560.
+
+
+4.4 Reflash U-boot Image using U-boot
+
+ => tftp 0 u-boot.bin
+ => protect off fff80000 ffffffff
+ => erase fff80000 ffffffff
+ => cp.b 0 fff80000 80000
+
5. Screen dump:
5.1 MPC8540ADS board