[U-Boot] [PATCH 0/6] Support Andes RISC-V l2cache on AE350 platform

Andes uboot at andestech.com
Tue May 28 09:39:08 UTC 2019


From: Rick Chen <rick at andestech.com>

Add a v5l2 cache controller driver that is usually found on
Andes RISC-V ae350 platform. It will parse and configure the
cache settings (data & instruction prefetch, data & tag latency)
from the device tree blob.

Also implement L2 cache flush and disable before jump to linux.
The sequence will be preferred as below:
L1 flush -> L1 disable -> L2 flush -> L2 disable

Rick Chen (6):
  dm: cache: add v5l2 cache controller driver
  riscv: ae350: use the v5l2 driver to configure the cache
  riscv: ae350: add imply v5l2 cache controller
  riscv: cache: Flush L2 cache before jump to linux
  riscv: dts: move out AE350 L2 node from cpus node
  riscv: ax25: use CCTL to flush d-cache

 arch/riscv/cpu/ax25/cache.c             |  22 ++++---
 arch/riscv/cpu/ax25/cpu.c               |   4 ++
 arch/riscv/dts/ae350_32.dts             |  17 ++++--
 arch/riscv/dts/ae350_64.dts             |  17 ++++--
 arch/riscv/include/asm/global_data.h    |   3 +
 arch/riscv/include/asm/v5l2cache.h      |  61 +++++++++++++++++++
 board/AndesTech/ax25-ae350/Kconfig      |   1 +
 board/AndesTech/ax25-ae350/ax25-ae350.c |  15 +++++
 drivers/cache/Kconfig                   |   9 +++
 drivers/cache/Makefile                  |   1 +
 drivers/cache/cache-v5l2.c              | 102 ++++++++++++++++++++++++++++++++
 11 files changed, 231 insertions(+), 21 deletions(-)
 create mode 100644 arch/riscv/include/asm/v5l2cache.h
 create mode 100644 drivers/cache/cache-v5l2.c

-- 
2.7.4



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