mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-09 20:56:16 +09:00
7065b7d466
Pre u-boot Flow:
1. User loads the u-boot image in flash
2. PBL/Configuration word is used to create LAW for Flash at 0xc0000000
(Please note that ISBC expects all these addresses, images to be
validated, entry point etc within 0 - 3.5G range)
3. ISBC validates the u-boot image, and passes control to u-boot
at 0xcffffffc.
Changes in u-boot:
1. Temporarily map CONFIG_SYS_MONITOR_BASE to the 1M
CONFIG_SYS_PBI_FLASH_WINDOW in AS=1.
(The CONFIG_SYS_PBI_FLASH_WINDOW is the address map for the flash
created by PBL/configuration word within 0 - 3.5G memory range. The
u-boot image at this address has been validated by ISBC code)
2. Remove TLB entries for 0 - 3.5G created by ISBC code
3. Remove the LAW entry for the CONFIG_SYS_PBI_FLASH_WINDOW created by
PBL/configuration word after switch to AS = 1
Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: Kuldip Giroh <kuldip.giroh@freescale.com>
Acked-by: Wood Scott-B07421 <B07421@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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| 74xx_7xx | ||
| mpc5xx | ||
| mpc5xxx | ||
| mpc8xx | ||
| mpc8xxx | ||
| mpc83xx | ||
| mpc85xx | ||
| mpc86xx | ||
| mpc512x | ||
| mpc824x | ||
| mpc8220 | ||
| mpc8260 | ||
| ppc4xx | ||