diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.10/043-MIPS-BCM63XX-Add-SMP-support-to-prom.c.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.10/043-MIPS-BCM63XX-Add-SMP-support-to-prom.c.patch | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/target/linux/brcm63xx/patches-3.10/043-MIPS-BCM63XX-Add-SMP-support-to-prom.c.patch b/target/linux/brcm63xx/patches-3.10/043-MIPS-BCM63XX-Add-SMP-support-to-prom.c.patch deleted file mode 100644 index 23f6d852c8..0000000000 --- a/target/linux/brcm63xx/patches-3.10/043-MIPS-BCM63XX-Add-SMP-support-to-prom.c.patch +++ /dev/null @@ -1,82 +0,0 @@ -From 7c44eabf20cba12049bf9eebfa192afcc2053b2d Mon Sep 17 00:00:00 2001 -From: Kevin Cernekee <cernekee@gmail.com> -Date: Sat, 9 Jul 2011 12:15:06 -0700 -Subject: [PATCH V2 1/2] MIPS: BCM63XX: Add SMP support to prom.c - -This involves two changes to the BSP code: - -1) register_smp_ops() for BMIPS SMP - -2) The CPU1 boot vector on some of the BCM63xx platforms conflicts with -the special interrupt vector (IV). Move it to 0x8000_0380 at boot time, -to resolve the conflict. - -Signed-off-by: Kevin Cernekee <cernekee@gmail.com> -[jogo@openwrt.org: moved SMP ops registration into ifdef guard, - changed ifdef guards to if (IS_ENABLED())] -Signed-off-by: Jonas Gorski <jogo@openwrt.org> ---- -V1 -> V2: - * changed ifdef guards to if (IS_ENABLED()) - - arch/mips/bcm63xx/prom.c | 41 +++++++++++++++++++++++++++++++++++++++++ - 1 file changed, 41 insertions(+) - ---- a/arch/mips/bcm63xx/prom.c -+++ b/arch/mips/bcm63xx/prom.c -@@ -8,7 +8,11 @@ - - #include <linux/init.h> - #include <linux/bootmem.h> -+#include <linux/smp.h> - #include <asm/bootinfo.h> -+#include <asm/bmips.h> -+#include <asm/smp-ops.h> -+#include <asm/mipsregs.h> - #include <bcm63xx_board.h> - #include <bcm63xx_cpu.h> - #include <bcm63xx_io.h> -@@ -54,6 +58,43 @@ void __init prom_init(void) - - /* do low level board init */ - board_prom_init(); -+ -+ if (IS_ENABLED(CONFIG_CPU_BMIPS4350) && IS_ENABLED(CONFIG_SMP)) { -+ /* set up SMP */ -+ register_smp_ops(&bmips_smp_ops); -+ -+ /* -+ * BCM6328 might not have its second CPU enabled, while BCM6358 -+ * needs special handling for its shared TLB, so disable SMP -+ * for now. -+ */ -+ if (BCMCPU_IS_6328()) { -+ bmips_smp_enabled = 0; -+ } else if (BCMCPU_IS_6358()) { -+ bmips_smp_enabled = 0; -+ } -+ -+ if (!bmips_smp_enabled) -+ return; -+ -+ /* -+ * The bootloader has set up the CPU1 reset vector at -+ * 0xa000_0200. -+ * This conflicts with the special interrupt vector (IV). -+ * The bootloader has also set up CPU1 to respond to the wrong -+ * IPI interrupt. -+ * Here we will start up CPU1 in the background and ask it to -+ * reconfigure itself then go back to sleep. -+ */ -+ memcpy((void *)0xa0000200, &bmips_smp_movevec, 0x20); -+ __sync(); -+ set_c0_cause(C_SW0); -+ cpumask_set_cpu(1, &bmips_booted_mask); -+ -+ /* -+ * FIXME: we really should have some sort of hazard barrier here -+ */ -+ } - } - - void __init prom_free_prom_memory(void) |