Documentation: Use correct KiB/MiB units instead of KB/MB
Fix a common mistake of using KB/MB where KiB/MiB is what actually is meant. 1 MB = (10^3)^2 = 1000000 1 MiB = (2^10)^2 = 1048576 Change-Id: I78327652b6c6526318071a9d4bafd7ec279ea614 Signed-off-by: Evgeny Zinoviev <me@ch1p.io> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39685 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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8 changed files with 21 additions and 21 deletions
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@ -19,7 +19,7 @@ way to categorize anything required by the SoC but not provided by coreboot.
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| IFD Region | IFD Region name | FMAP Name | Notes |
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| index | | | |
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+============+==================+===========+===========================================+
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| 0 | Flash Descriptor | SI_DESC | Always the top 4KB of flash |
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| 0 | Flash Descriptor | SI_DESC | Always the top 4 KiB of flash |
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+------------+------------------+-----------+-------------------------------------------+
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| 1 | BIOS | SI_BIOS | This is the region that contains coreboot |
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+------------+------------------+-----------+-------------------------------------------+
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@ -40,9 +40,9 @@ way to categorize anything required by the SoC but not provided by coreboot.
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The ifdtool can be used to manipulate a firmware image with a IFD. This tool
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will not take into account the FMAP while modifying the image which can lead to
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unexpected and hard to debug issues with the firmware image. For example if the
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ME region is defined at 6 MB in the IFD but the FMAP only allocates 4 MB for the
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ME, then when the ME is added by the ifdtool 6 MB will be written which could
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overwrite 2 MB of the BIOS.
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ME region is defined at 6 MiB in the IFD but the FMAP only allocates 4 MiB for
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the ME, then when the ME is added by the ifdtool 6 MiB will be written which
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could overwrite 2 MiB of the BIOS.
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In order to validate that the FMAP and the IFD are compatible the ifdtool
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provides --validate (-t) option. `ifdtool -t` will read both the IFD and the
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@ -75,4 +75,4 @@ Region mismatch between pd and SI_PDR
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FMAP area SI_PDR:
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offset: 0x007fc000
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length: 0x00004000
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```
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```
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@ -41,8 +41,8 @@ These can be extracted from the original flash image as follows:
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00003000:006FFFFF me
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00001000:00002fff gbe
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```
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3) Use `ifdtool -n <layout_file> <flash_image>` to resize the *bios* region from the default 6MB
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to 9 MB, this is required to create sufficient space for LinuxBoot.
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3) Use `ifdtool -n <layout_file> <flash_image>` to resize the *bios* region from the default 6 MiB
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to 9 MiB, this is required to create sufficient space for LinuxBoot.
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NOTE: Please make sure only the firmware descriptor (*fd*) region is changed. Older versions
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of the ifdtool corrupt the *me* region.
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4) Use `ifdtool -x <resized_flash_image>` to extract the components.
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@ -36,7 +36,7 @@ checkout the [code on gerrit] to build coreboot for the laptop.
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## Flashing instructions
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HP EliteBook 8760w has an 8MB SOIC-8 flash chip on the bottom of the
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HP EliteBook 8760w has an 8 MiB SOIC-8 flash chip on the bottom of the
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mainboard. You just need to remove the service cover, and use an SOIC-8
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clip to read and flash the chip.
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@ -60,7 +60,7 @@ $ flashrom -p internal --ifd -i bios -w coreboot.rom --noverify-all
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2. Make sure power supply is disconnected from board.
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3. Connect Dediprog SF600 to header at J7H1.
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4. Ensure that "currently working on" is in "application memory chip 1"
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5. Go to "file" and select the .rom file (16 MB) to program chip1.
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5. Go to "file" and select the .rom file (16 MiB) to program chip1.
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6. Execute the batch operation to erase and program the chip.
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## Technology
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@ -53,7 +53,7 @@ the `new_layout.txt` file:
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```eval_rst
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+---------------------------+---------------------------+---------------------------+
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| 4 MB chip | 8 MB chip | 16 MB chip |
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| 4 MiB chip | 8 MiB chip | 16 MiB chip |
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+===========================+===========================+===========================+
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| .. code-block:: none | .. code-block:: none | .. code-block:: none |
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| | | |
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@ -97,12 +97,12 @@ $ cd util/bincfg
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$ make
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```
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If your flash is not 8 MB, you need to change values of `flcomp_density1` and
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If your flash is not 8 MiB, you need to change values of `flcomp_density1` and
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`flreg1_limit` in the `ifd-x200.set` file according to following table:
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```eval_rst
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+-----------------+-------+-------+--------+
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| | 4 MB | 8 MB | 16 MB |
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| | 4 MiB | 8 MiB | 16 MiB |
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+=================+=======+=======+========+
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| flcomp_density1 | 0x3 | 0x4 | 0x5 |
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+-----------------+-------+-------+--------+
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@ -123,7 +123,7 @@ to flash descriptor and gbe dump.
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```
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Mainboard --->
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ROM chip size (8192 KB (8 MB)) # According to your chip
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(0x7fd000) Size of CBFS filesystem in ROM # or 0x3fd000 for 4 MB chip / 0x1ffd000 for 16 MB chip
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(0x7fd000) Size of CBFS filesystem in ROM # or 0x3fd000 for 4 MiB chip / 0x1ffd000 for 16 MiB chip
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Chipset --->
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[*] Add Intel descriptor.bin file
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@ -142,7 +142,7 @@ The flash layouts of the OEM firmware are as follows:
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```eval_rst
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+---------------------------------+---------------------------------+
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| 4 MB chip | 8 MB chip |
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| 4 MiB chip | 8 MiB chip |
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+=================================+=================================+
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| .. code-block:: none | .. code-block:: none |
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| | |
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@ -159,6 +159,6 @@ The flash layouts of the OEM firmware are as follows:
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On each boot of vendor BIOS `ec` area in flash is checked for having firmware
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there, and if there is one, it proceedes to update firmware on H8S/2116 (when
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both external power and main battery are attached). Once update is performed,
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first 64 KB of `ec` area is erased. Visit
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first 64 KiB of `ec` area is erased. Visit
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[thinkpad-ec repository](https://github.com/hamishcoleman/thinkpad-ec) to learn
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more about how to extract EC firmware from vendor updates.
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@ -8,15 +8,15 @@ Please see [mrc.bin](../../northbridge/intel/haswell/mrc.bin).
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## Flashing instructions
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T440p has two flash chips, an 8MB W25Q64FV and a 4MB W25Q32FV. To flash
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T440p has two flash chips, an 8 MiB W25Q64FV and a 4 MiB W25Q32FV. To flash
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coreboot, you just need to remove the big door according to the T440
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[Hardware Maintenance Manual] and flash the 4MB chip.
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[Hardware Maintenance Manual] and flash the 4 MiB chip.
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![T440p flash chip](t440p_flash_chip.jpg)
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To access the 8MB chip, you need to remove the base cover.
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To access the 8 MiB chip, you need to remove the base cover.
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![T440p 8MB flash chip](t440p_all_flash_chips.jpg)
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![T440p 8 MiB flash chip](t440p_all_flash_chips.jpg)
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The flash layout of the OEM firmware is as follows:
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@ -2,7 +2,7 @@
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* MSI MS-7707 V1.1 (Medion OEM Akoya P4385D MSN10014555)
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* SandyBridge Intel P67 (BD82x6x)
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* Winbond 25Q32BV (4MB)
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* Winbond 25Q32BV (4 MiB)
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* Fintek F71808A SuperIO
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* Intel 82579V Gigabit
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* NEC uPD720200 USB 3.0 Host Controller
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@ -18,7 +18,7 @@ Controller etc.
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## De-blobbing
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- [Intel FSP2.0] can not be removed as long as there is no free replacement
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- Intel ME can be cleaned using me_cleaner (~4.5 MB more free space)
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- Intel ME can be cleaned using me_cleaner (~4.5 MiB more free space)
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- Intel Ethernet Controller Firmware can be removed when it's extended functionality is not
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needed. For more details refer to the respective datasheet (e.g 333016-008 for I210).
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- Boards with [AST2400] BMC/IPMI: Firmware can be replaced by [OpenBMC]
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