summaryrefslogtreecommitdiff
path: root/common/env_remote.c
Commit message (Collapse)AuthorAgeLines
* env: remove duplicated env_get_char_spec()Igor Grinberg2012-09-26-5/+0
| | | | | | | | env_fat and env_remote have an implementation of env_get_char_spec() function that is not different than the default. Remove the duplicated code. Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
* powerpc/corenet_ds: Slave module for boot from PCIELiu Gang2012-08-23-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When boot from PCIE, slave's core should be in holdoff after powered on for some specific requirements. Master will release the slave's core at the right time by PCIE interface. Slave's ucode and ENV can be stored in master's memory space, then slave can fetch them through PCIE interface. For the corenet platform, ucode is for Fman. NOTE: Because the slave can not erase, write master's NOR flash by PCIE interface, so it can not modify the ENV parameters stored in master's NOR flash using "saveenv" or other commands. environment and requirement: master: 1. NOR flash for its own u-boot image, ucode and ENV space. 2. Slave's u-boot image is in master NOR flash. 3. Put the slave's ucode and ENV into it's own memory space. 4. Normally boot from local NOR flash. 5. Configure PCIE system if needed. slave: 1. Just has EEPROM for RCW. No flash for u-boot image, ucode and ENV. 2. Boot location should be set to one PCIE interface by RCW. 3. RCW should configure the SerDes, PCIE interfaces correctly. 4. Must set all the cores in holdoff by RCW. 5. Must be powered on before master's boot. For the slave module, need to finish these processes: 1. Set the boot location to one PCIE interface by RCW. 2. Set a specific TLB entry for the boot process. 3. Set a LAW entry with the TargetID of one PCIE for the boot. 4. Set a specific TLB entry in order to fetch ucode and ENV from master. 5. Set a LAW entry with the TargetID one of the PCIE ports for ucode and ENV. 6. Slave's u-boot image should be generated specifically by make xxxx_SRIO_PCIE_BOOT_config. This will set SYS_TEXT_BASE=0xFFF80000 and other configurations. In addition, the processes are very similar between boot from SRIO and boot from PCIE. Some configurations like the address spaces can be set to the same. So the module of boot from PCIE was added based on the existing module of boot from SRIO, and the following changes were needed: 1. Updated the README.srio-boot-corenet to add descriptions about boot from PCIE, and change the name to README.srio-pcie-boot-corenet. 2. Changed the compile config "xxxx_SRIOBOOT_SLAVE" to "xxxx_SRIO_PCIE_BOOT", and the image builded with "xxxx_SRIO_PCIE_BOOT" can support both the boot from SRIO and from PCIE. 3. Updated other macros and documents if needed to add information about boot from PCIE. Signed-off-by: Liu Gang <Gang.Liu@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
* powerpc/corenet_ds: Slave reads ENV from master when boot from SRIOLiu Gang2012-04-24-0/+79
When boot from SRIO, slave's ENV can be stored in master's memory space, then slave can fetch the ENV through SRIO interface. NOTE: Because the slave can not erase, write master's NOR flash by SRIO interface, so it can not modify the ENV parameters stored in master's NOR flash using "saveenv" or other commands. Master needs to: 1. Put the slave's ENV into it's own memory space. 2. Set an inbound SRIO window covered slave's ENV stored in master's memory space. Slave needs to: 1. Set a specific TLB entry in order to fetch ucode and ENV from master. 2. Set a LAW entry with the TargetID SRIO1 or SRIO2 for ucode and ENV. Signed-off-by: Liu Gang <Gang.Liu@freescale.com> Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>