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mpc83xx: Correct the README for DDR ECC 

Update the README for DDR ECC, change the name
to README.mpc83xx.ddrecc.

Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
utp
Dave Liu 2007-08-01 15:00:59 +08:00 committed by Kim Phillips
parent daab8c67d2
commit 47e8bc8467
1 changed files with 30 additions and 30 deletions
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60
doc/README.mpc8349emds.ddrecc → doc/README.mpc83xx.ddrecc
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@ -15,10 +15,10 @@ IMPORTANT NOTICE: enabling injecting multiple-bit errors is potentially
dangerous as such errors are NOT corrected by the controller. Therefore caution dangerous as such errors are NOT corrected by the controller. Therefore caution
should be taken when enabling the injection of multiple-bit errors: it is only should be taken when enabling the injection of multiple-bit errors: it is only
safe when used on a carefully selected memory area and used under control of safe when used on a carefully selected memory area and used under control of
the 'ecc test' command (see example 'Injecting Multiple-Bit Errors' below). In the 'ecc testdw' 'ecc testword' command (see example 'Injecting Multiple-Bit
particular, when you simply set the multiple-bit errors in inject mask and Errors' below). In particular, when you simply set the multiple-bit errors in
enable injection, U-Boot is very likely to hang quickly as the errors will be inject mask and enable injection, U-Boot is very likely to hang quickly as the
injected when it accesses its code, data etc. errors will be injected when it accesses its code, data etc.
Use cases for DDR 'ecc' command: Use cases for DDR 'ecc' command:
@ -40,7 +40,7 @@ Injecting Single-Bit Errors
2. Run test over some memory region 2. Run test over some memory region
=> ecc test 200000 10 => ecc testdw 200000 10
3. Check ECC status 3. Check ECC status
@ -61,57 +61,57 @@ Memory Error Detect:
16 errors were generated, Single-Bit Error flag was not set as Single Bit Error 16 errors were generated, Single-Bit Error flag was not set as Single Bit Error
Counter did not reach Single-Bit Error Threshold. Counter did not reach Single-Bit Error Threshold.
4. Make sure used memory region got re-initialized with 0xcafecafe pattern 4. Make sure used memory region got re-initialized with 0x0123456789abcdef
=> md 200000 => md 200000
00200000: cafecafe cafecafe cafecafe cafecafe ................ 00200000: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200010: cafecafe cafecafe cafecafe cafecafe ................ 00200010: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200020: cafecafe cafecafe cafecafe cafecafe ................ 00200020: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200030: cafecafe cafecafe cafecafe cafecafe ................ 00200030: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200040: cafecafe cafecafe cafecafe cafecafe ................ 00200040: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200050: cafecafe cafecafe cafecafe cafecafe ................ 00200050: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200060: cafecafe cafecafe cafecafe cafecafe ................ 00200060: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200070: cafecafe cafecafe cafecafe cafecafe ................ 00200070: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200080: deadbeef deadbeef deadbeef deadbeef ................ 00200080: deadbeef deadbeef deadbeef deadbeef ................
00200090: deadbeef deadbeef deadbeef deadbeef ................ 00200090: deadbeef deadbeef deadbeef deadbeef ................
Injecting Multiple-Bit Errors Injecting Multiple-Bit Errors
----------------------------- -----------------------------
1. Set more than 1 bit in Data Path Error Inject Mask 1. Set more than 1 bit in Data Path Error Inject Mask
=> ecc injectdatahi 5 => ecc injectdatahi 1
=> ecc injectdatalo 1
2. Run test over some memory region 2. Run test over some memory region
=> ecc test 200000 10 => ecc testword 200000 1
3. Check ECC status 3. Check ECC status
=> ecc status => ecc status
... ...
Memory Data Path Error Injection Mask High/Low: 00000005 00000000 Memory Data Path Error Injection Mask High/Low: 00000001 00000001
... ...
Memory Error Detect: Memory Error Detect:
Multiple Memory Errors: 1 Multiple Memory Errors: 0
Multiple-Bit Error: 1 Multiple-Bit Error: 1
Single-Bit Error: 0 Single-Bit Error: 0
... ...
Observe that both Multiple Memory Errors and Multiple-Bit Error flags are set. The Multiple Memory Errors flags not set and Multiple-Bit Error flags are set.
4. Make sure used memory region got re-initialized with 0xcafecafe pattern 4. Make sure used memory region got re-initialized with 0x0123456789abcdef
=> md 200000 => md 200000
00200000: cafecafe cafecafe cafecafe cafecafe ................ 00200000: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200010: cafecafe cafecafe cafecafe cafecafe ................ 00200010: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200020: cafecafe cafecafe cafecafe cafecafe ................ 00200020: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200030: cafecafe cafecafe cafecafe cafecafe ................ 00200030: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200040: cafecafe cafecafe cafecafe cafecafe ................ 00200040: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200050: cafecafe cafecafe cafecafe cafecafe ................ 00200050: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200060: cafecafe cafecafe cafecafe cafecafe ................ 00200060: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200070: cafecafe cafecafe cafecafe cafecafe ................ 00200070: 01234567 89abcdef 01234567 89abcdef .#Eg.....#Eg....
00200080: deadbeef deadbeef deadbeef deadbeef ................ 00200080: deadbeef deadbeef deadbeef deadbeef ................
00200090: deadbeef deadbeef deadbeef deadbeef ................ 00200090: deadbeef deadbeef deadbeef deadbeef ................
@ -140,7 +140,7 @@ Test Single-Bit Error Counter and Threshold
... ...
Memory Single-Bit Error Management (0..255): Memory Single-Bit Error Management (0..255):
Single-Bit Error Threshold: 255 Single-Bit Error Threshold: 255
Single Bit Error Counter: 60 Single Bit Error Counter: 199
Memory Error Detect: Memory Error Detect:
Multiple Memory Errors: 1 Multiple Memory Errors: 1