From 029093a302c9a66b74bec46285a179abd122a40a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Sun, 21 Feb 2021 10:00:18 +0100 Subject: bmips: add new target MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This target has full device tree support, thus reducing the number of patches needed for bcm63xx, in which there's a patch for every board. The intention is to start with a minimal amount of downstream patches and start upstreaming all of them. Current status: - Enabling EHCI/OHCI on BCM6358 causes a kernel panic. - BCM63268 lacks Timer Clocks/Reset support. - No PCI/PCIe drivers. - No ethernet drivers. Signed-off-by: Álvaro Fernández Rojas Acked-by: Adrian Schmutzler --- target/linux/bmips/image/lzma-loader/src/cache.c | 42 ++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 target/linux/bmips/image/lzma-loader/src/cache.c (limited to 'target/linux/bmips/image/lzma-loader/src/cache.c') diff --git a/target/linux/bmips/image/lzma-loader/src/cache.c b/target/linux/bmips/image/lzma-loader/src/cache.c new file mode 100644 index 0000000000..2c79c34a42 --- /dev/null +++ b/target/linux/bmips/image/lzma-loader/src/cache.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * LZMA compressed kernel loader for Atheros AR7XXX/AR9XXX based boards + * + * Copyright (C) 2011 Gabor Juhos + * + * The cache manipulation routine has been taken from the U-Boot project. + * (C) Copyright 2003 + * Wolfgang Denk, DENX Software Engineering, + */ + +#include "cache.h" +#include "cacheops.h" +#include "config.h" +#include "printf.h" + +#define cache_op(op,addr) \ + __asm__ __volatile__( \ + " .set push \n" \ + " .set noreorder \n" \ + " .set mips3\n\t \n" \ + " cache %0, %1 \n" \ + " .set pop \n" \ + : \ + : "i" (op), "R" (*(unsigned char *)(addr))) + +void flush_cache(unsigned long start_addr, unsigned long size) +{ + unsigned long lsize = CONFIG_CACHELINE_SIZE; + unsigned long addr = start_addr & ~(lsize - 1); + unsigned long aend = (start_addr + size + (lsize - 1)) & ~(lsize - 1); + + printf("blasting from 0x%08x to 0x%08x (0x%08x - 0x%08x)\n", start_addr, size, addr, aend); + + while (1) { + cache_op(Hit_Writeback_Inv_D, addr); + cache_op(Hit_Invalidate_I, addr); + if (addr == aend) + break; + addr += lsize; + } +} -- cgit v1.2.3