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authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/roms/u-boot/doc/README.mpc85xx
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/doc/README.mpc85xx')
-rw-r--r--qemu/roms/u-boot/doc/README.mpc85xx166
1 files changed, 0 insertions, 166 deletions
diff --git a/qemu/roms/u-boot/doc/README.mpc85xx b/qemu/roms/u-boot/doc/README.mpc85xx
deleted file mode 100644
index f9b023f28..000000000
--- a/qemu/roms/u-boot/doc/README.mpc85xx
+++ /dev/null
@@ -1,166 +0,0 @@
-External Debug Support
-----------------------
-
-Freescale's e500v1 and e500v2 cores (used in mpc85xx chips) have some
-restrictions on external debugging (JTAG). In particular, for the debugger to
-be able to receive control after a single step or breakpoint:
- - MSR[DE] must be set
- - A valid opcode must be fetchable, through the MMU, from the debug
- exception vector (IVPR + IVOR15).
-
-To maximize the time during which this requirement is met, U-Boot sets MSR[DE]
-immediately on entry and keeps it set. It also uses a temporary TLB to keep a
-mapping to a valid opcode at the debug exception vector, even if we normally
-don't support exception vectors being used that early, and that's not the area
-where U-Boot currently executes from.
-
-Note that there may still be some small windows where debugging will not work,
-such as in between updating IVPR and IVOR15.
-
-Config Switches:
-----------------
-
-Please refer README section "MPC85xx External Debug Support"
-
-Major Config Switches during various boot Modes
-----------------------------------------------
-
-NOR boot
- !defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SPL)
-NOR boot Secure
- !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT)
-RAMBOOT(SD, SPI & NAND boot)
- defined(CONFIG_SYS_RAMBOOT)
-RAMBOOT Secure (SD, SPI & NAND)
- defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT)
-NAND SPL BOOT
- defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_NAND_SPL)
-
-
-TLB Entries during u-boot execution
------------------------------------
-
-Note: Sequence number is in order of execution
-
-A) defined(CONFIG_SYS_RAMBOOT) i.e. SD, SPI, NAND RAMBOOT & NAND_SPL boot
-
- 1) TLB entry to overcome e500 v1/v2 debug restriction
- Location : Label "_start_e500"
- TLB Entry : CONFIG_SYS_PPC_E500_DEBUG_TLB
- EPN -->RPN : CONFIG_SYS_MONITOR_BASE --> CONFIG_SYS_MONITOR_BASE
- Properties : 256K, AS0, I, IPROT
-
- 2) TLB entry for working in AS1
- Location : Label "create_init_ram_area"
- TLB Entry : 15
- EPN -->RPN : CONFIG_SYS_MONITOR_BASE --> CONFIG_SYS_MONITOR_BASE
- Properties : 1M, AS1, I, G, IPROT
-
- 3) TLB entry for the stack during AS1
- Location : Lable "create_init_ram_area"
- TLB Entry : 14
- EPN -->RPN : CONFIG_SYS_INIT_RAM_ADDR --> CONFIG_SYS_INIT_RAM_ADDR
- Properties : 16K, AS1, IPROT
-
- 4) TLB entry for CCSRBAR during AS1 execution
- Location : cpu_init_early_f
- TLB Entry : 13
- EPN -->RPN : CONFIG_SYS_CCSRBAR --> CONFIG_SYS_CCSRBAR
- Properties : 1M, AS1, I, G
-
- 5) Invalidate unproctected TLB Entries
- Location : cpu_init_early_f
- Invalidated: 13
-
- 6) Create TLB entries as per boards/freescale/<board>/tlb.c
- Location : cpu_init_early_f --> init_tlbs()
- Properties : ..., AS0, ...
- Please note It can overwrites previous TLB Entries.
-
- 7) Disable TLB Entries of AS1
- Location : cpu_init_f --> disable_tlb()
- Disable : 15, 14
-
- 8) Update Flash's TLB entry
- Location : Board_init_r
- TLB entry : Search from TLB entries
- EPN -->RPN : CONFIG_SYS_FLASH_BASE --> CONFIG_SYS_FLASH_BASE_PHYS
- Properties : Board specific size, AS0, I, G, IPROT
-
-
-B) !defined(CONFIG_SYS_RAMBOOT) i.e. NOR boot
-
- 1) TLB entry to overcome e500 v1/v2 debug restriction
- Location : Label "_start_e500"
- TLB Entry : CONFIG_SYS_PPC_E500_DEBUG_TLB
-#if defined(CONFIG_SECURE_BOOT)
- EPN -->RPN : CONFIG_SYS_MONITOR_BASE --> CONFIG_SYS_PBI_FLASH_WINDOW
- Properties : 1M, AS1, I, G, IPROT
-#else
- EPN -->RPN : CONFIG_SYS_MONITOR_BASE & 0xffc00000 --> 0xffc00000
- Properties : 4M, AS0, I, G, IPROT
-#endif
-
- 2) TLB entry for working in AS1
- Location : Label "create_init_ram_area"
- TLB Entry : 15
-#if defined(CONFIG_SECURE_BOOT)
- EPN -->RPN : CONFIG_SYS_MONITOR_BASE --> CONFIG_SYS_PBI_FLASH_WINDOW
- Properties : 1M, AS1, I, G, IPROT
-#else
- EPN -->RPN : CONFIG_SYS_MONITOR_BASE & 0xffc00000 --> 0xffc00000
- Properties : 4M, AS1, I, G, IPROT
-#endif
-
- 3) TLB entry for the stack during AS1
- Location : Lable "create_init_ram_area"
- TLB Entry : 14
- EPN -->RPN : CONFIG_SYS_INIT_RAM_ADDR --> CONFIG_SYS_INIT_RAM_ADDR
- Properties : 16K, AS1, IPROT
-
- 4) TLB entry for CCSRBAR during AS1 execution
- Location : cpu_init_early_f
- TLB Entry : 13
- EPN -->RPN : CONFIG_SYS_CCSRBAR --> CONFIG_SYS_CCSRBAR
- Properties : 1M, AS1, I, G
-
- 5) TLB entry for Errata workaround CONFIG_SYS_FSL_ERRATUM_IFC_A003399
- Location : cpu_init_early_f
- TLB Entry : 9
- EPN -->RPN : SRAM_BASE_ADDR --> SRAM_BASE_ADDR
- Properties : 1M, AS1, I
-
- 6) CONFIG_SYS_FSL_ERRATUM_IFC_A003399 Adjust flash's phys addr
- Location : cpu_init_early_f --> setup_ifc
- TLB Entry : Get Flash TLB
- EPN -->RPN : Adjusted flash_phys --> Adjusted flash_phys
- Properties : 4M, AS1, I, G, IPROT
-
- 7) CONFIG_SYS_FSL_ERRATUM_IFC_A003399: E500 v1,v2 debug restriction
- Location : cpu_init_early_f --> setup_ifc
- TLB Entry : CONFIG_SYS_PPC_E500_DEBUG_TLB
- EPN -->RPN : Adjusted flash_phys --> Adjusted flash_phys
- Properties : 4M, AS0, I, G, IPROT
-
- 8) Invalidate unproctected TLB Entries
- Location : cpu_init_early_f
- Invalidated: 13, 9
-
- 9) Create TLB entries as per boards/freescale/<board>/tlb.c
- Location : cpu_init_early_f --> init_tlbs()
- Properties : ..., AS0, ...
- Note: It can overwrites previous TLB Entries
-
- 10) Disable TLB Entries of AS1
- Location : cpu_init_f --> disable_tlb()
- Disable : 15, 14
-
- 11) Create DDR's TLB entriy
- Location : Board_init_f -> init_func_ram -> initdram
- TLB entry : Search free TLB entry
-
- 12) Update Flash's TLB entry
- Location : Board_init_r
- TLB entry : Search from TLB entries
- EPN -->RPN : CONFIG_SYS_FLASH_BASE --> CONFIG_SYS_FLASH_BASE_PHYS
- Properties : Board specific size, AS0, I, G, IPROT