diff options
Diffstat (limited to 'doc/SPI')
| -rw-r--r-- | doc/SPI/README.ti_qspi_am43x_test | 76 | ||||
| -rw-r--r-- | doc/SPI/README.ti_qspi_dra_test | 47 | ||||
| -rw-r--r-- | doc/SPI/README.ti_qspi_flash | 47 |
3 files changed, 0 insertions, 170 deletions
diff --git a/doc/SPI/README.ti_qspi_am43x_test b/doc/SPI/README.ti_qspi_am43x_test deleted file mode 100644 index 8fbf10b57a..0000000000 --- a/doc/SPI/README.ti_qspi_am43x_test +++ /dev/null @@ -1,76 +0,0 @@ -Testing details- ----------------- - -This doc simply illustrated the testing details of qspi flash -driver with Macronix M25L51235 flash device. - -The test includes -- probing the flash device -- erasing the flash device -- Writing to flash -- Reading the contents of the flash. - -Test Log --------- - -Hit any key to stop autoboot: 0 -U-Boot# sf probe 0 -SF: Detected MX25L51235F with page size 256 Bytes, erase size 64 KiB, total 64 MiB, mapped at 30000000 -U-Boot# sf erase 0 0x80000 -SF: 524288 bytes @ 0x0 Erased: OK -U-Boot# mw 81000000 0xdededede 0x40000 -U-Boot# sf write 81000000 0 0x40000 -SF: 262144 bytes @ 0x0 Written: OK -U-Boot# sf read 82000000 0 0x40000 -SF: 262144 bytes @ 0x0 Read: OK -U-Boot# md 0x82000000 -82000000: dededede dededede dededede dededede ................ -82000010: dededede dededede dededede dededede ................ -82000020: dededede dededede dededede dededede ................ -82000030: dededede dededede dededede dededede ................ -82000040: dededede dededede dededede dededede ................ -82000050: dededede dededede dededede dededede ................ -82000060: dededede dededede dededede dededede ................ -82000070: dededede dededede dededede dededede ................ -82000080: dededede dededede dededede dededede ................ -82000090: dededede dededede dededede dededede ................ -820000a0: dededede dededede dededede dededede ................ -820000b0: dededede dededede dededede dededede ................ -820000c0: dededede dededede dededede dededede ................ -820000d0: dededede dededede dededede dededede ................ -820000e0: dededede dededede dededede dededede ................ -820000f0: dededede dededede dededede dededede ................ -U-Boot# md 0x82010000 -82010000: dededede dededede dededede dededede ................ -82010010: dededede dededede dededede dededede ................ -82010020: dededede dededede dededede dededede ................ -82010030: dededede dededede dededede dededede ................ -82010040: dededede dededede dededede dededede ................ -82010050: dededede dededede dededede dededede ................ -82010060: dededede dededede dededede dededede ................ -82010070: dededede dededede dededede dededede ................ -82010080: dededede dededede dededede dededede ................ -82010090: dededede dededede dededede dededede ................ -820100a0: dededede dededede dededede dededede ................ -820100b0: dededede dededede dededede dededede ................ -820100c0: dededede dededede dededede dededede ................ -820100d0: dededede dededede dededede dededede ................ -820100e0: dededede dededede dededede dededede ................ -820100f0: dededede dededede dededede dededede ................ -U-Boot# md 0x82030000 -82030000: dededede dededede dededede dededede ................ -82030010: dededede dededede dededede dededede ................ -82030020: dededede dededede dededede dededede ................ -82030030: dededede dededede dededede dededede ................ -82030040: dededede dededede dededede dededede ................ -82030050: dededede dededede dededede dededede ................ -82030060: dededede dededede dededede dededede ................ -82030070: dededede dededede dededede dededede ................ -82030080: dededede dededede dededede dededede ................ -82030090: dededede dededede dededede dededede ................ -820300a0: dededede dededede dededede dededede ................ -820300b0: dededede dededede dededede dededede ................ -820300c0: dededede dededede dededede dededede ................ -820300d0: dededede dededede dededede dededede ................ -820300e0: dededede dededede dededede dededede ................ -820300f0: dededede dededede dededede dededede ................ diff --git a/doc/SPI/README.ti_qspi_dra_test b/doc/SPI/README.ti_qspi_dra_test deleted file mode 100644 index e89f53587f..0000000000 --- a/doc/SPI/README.ti_qspi_dra_test +++ /dev/null @@ -1,47 +0,0 @@ -------------------------------------------------- - Simple steps used to test the QSPI at U-Boot -------------------------------------------------- - -For #1, build the patched U-Boot and load MLO/u-boot.img - ----------------------------------- -Boot from another medium like MMC ----------------------------------- - -U-Boot# mmc dev 0 -mmc0 is current device -U-Boot# fatload mmc 0 0x82000000 MLO -reading MLO -55872 bytes read in 8 ms (6.7 MiB/s) -U-Boot# fatload mmc 0 0x83000000 u-boot.img -reading u-boot.img -248600 bytes read in 19 ms (12.5 MiB/s) - --------------------------------------------------- -Commands to erase/write u-boot/mlo to flash device --------------------------------------------------- -U-Boot# sf probe 0 -SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total 32 MiB, mapped at 5c000000 -U-Boot# sf erase 0 0x10000 -SF: 65536 bytes @ 0x0 Erased: OK -U-Boot# sf erase 0x20000 0x10000 -SF: 65536 bytes @ 0x20000 Erased: OK -U-Boot# sf erase 0x30000 0x10000 -SF: 65536 bytes @ 0x30000 Erased: OK -U-Boot# sf erase 0x40000 0x10000 -SF: 65536 bytes @ 0x40000 Erased: OK -U-Boot# sf erase 0x50000 0x10000 -SF: 65536 bytes @ 0x50000 Erased: OK -U-Boot# sf erase 0x60000 0x10000 -SF: 65536 bytes @ 0x60000 Erased: OK -U-Boot# sf write 82000000 0 0x10000 -SF: 65536 bytes @ 0x0 Written: OK -U-Boot# sf write 83000000 0x20000 0x60000 -SF: 393216 bytes @ 0x20000 Written: OK - -For #2, set sysboot to QSPI-1 boot mode(SYSBOOT[5:0] = 100110) and power -on. ROM should find the GP header at offset 0 and load/execute SPL. SPL -then detects that ROM was in QSPI-1 mode (boot code 10) and attempts to -find a U-Boot image header at offset 0x20000 (set in the config file) -and proceeds to load that image using the U-Boot image payload offset/size -from the header. It will then start U-Boot. diff --git a/doc/SPI/README.ti_qspi_flash b/doc/SPI/README.ti_qspi_flash deleted file mode 100644 index 5cc1fd03b6..0000000000 --- a/doc/SPI/README.ti_qspi_flash +++ /dev/null @@ -1,47 +0,0 @@ -QSPI U-Boot support ------------------- - -Host processor is connected to serial flash device via qpsi -interface. QSPI is a kind of spi module that allows single, -dual and quad read access to external spi devices. The module -has a memory mapped interface which provide direct interface -for accessing data form external spi devices. - -The one QSPI in the device is primarily intended for fast booting -from Quad SPI flash devices. - -Usecase -------- - -MLO/u-boot.img will be flashed from SD/MMC to the flash device -using serial flash erase and write commands. Then, switch settings -will be changed to qspi boot. Then, the ROM code will read MLO -from the predefined location in the flash, where it was flashed and -execute it after storing it in SDRAM. Then, the MLO will read -u-boot.img from flash and execute it from SDRAM. - -SPI mode -------- -SPI mode uses mtd spi framework for transfer and reception of data. -Can be used in: -1. Normal mode: use single pin for transfers -2. Dual Mode: use two pins for transfers. -3. Quad mode: use four pin for transfer - -Memory mapped read mode ------------------------ -In this, SPI controller is configured using configuration port and then -controller is switched to memory mapped port for data read. - -Driver ------- -drivers/qspi/ti_qspi.c - - Newly created file which is responsible for configuring the - qspi controller and also for providing the low level api which - is responsible for transferring the datas from host controller - to flash device and vice versa. - -Testing -------- -A seperated file named README.dra_qspi_test has been created which gives all the -details about the commands required to test qspi at U-Boot level. |