diff options
| author |   Arnd Bergmann <arnd@arndb.de> | 2018-03-07 22:23:24 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2018-03-16 10:55:47 +0100 |
| commit | 4ba66a9760722ccbb691b8f7116cad2f791cca7b (patch) | |
| tree | e29f9624ad0b13aa11860e39440bbc5e24d18a30 /arch/blackfin/kernel/entry.S | |
| parent | arch: remove score port (diff) | |
| download | linux-dev-4ba66a9760722ccbb691b8f7116cad2f791cca7b.tar.xz linux-dev-4ba66a9760722ccbb691b8f7116cad2f791cca7b.zip | |
arch: remove blackfin port
The Analog Devices Blackfin port was added in 2007 and was rather
active for a while, but all work on it has come to a standstill
over time, as Analog have changed their product line-up.
Aaron Wu confirmed that the architecture port is no longer relevant,
and multiple people suggested removing blackfin independently because
of some of its oddities like a non-working SMP port, and the amount of
duplication between the chip variants, which cause extra work when
doing cross-architecture changes.
Link: https://docs.blackfin.uclinux.org/
Acked-by: Aaron Wu <Aaron.Wu@analog.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Mike Frysinger <vapier@chromium.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/blackfin/kernel/entry.S')
| -rw-r--r-- | arch/blackfin/kernel/entry.S | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/arch/blackfin/kernel/entry.S b/arch/blackfin/kernel/entry.S deleted file mode 100644 index 4071265fc4fe..000000000000 --- a/arch/blackfin/kernel/entry.S +++ /dev/null @@ -1,59 +0,0 @@ -/* - * Copyright 2004-2009 Analog Devices Inc. - * - * Licensed under the GPL-2 or later - */ - -#include <linux/linkage.h> -#include <asm/thread_info.h> -#include <asm/errno.h> -#include <asm/blackfin.h> -#include <asm/asm-offsets.h> - -#include <asm/context.S> - -#ifdef CONFIG_EXCPT_IRQ_SYSC_L1 -.section .l1.text -#else -.text -#endif - -ENTRY(_ret_from_fork) -#ifdef CONFIG_IPIPE - /* - * Hw IRQs are off on entry, and we don't want the scheduling tail - * code to starve high priority domains from interrupts while it - * runs. Therefore we first stall the root stage to have the - * virtual interrupt state reflect IMASK. - */ - p0.l = ___ipipe_root_status; - p0.h = ___ipipe_root_status; - r4 = [p0]; - bitset(r4, 0); - [p0] = r4; - /* - * Then we may enable hw IRQs, allowing preemption from high - * priority domains. schedule_tail() will do local_irq_enable() - * since Blackfin does not define __ARCH_WANT_UNLOCKED_CTXSW, so - * there is no need to unstall the root domain by ourselves - * afterwards. - */ - p0.l = _bfin_irq_flags; - p0.h = _bfin_irq_flags; - r4 = [p0]; - sti r4; -#endif /* CONFIG_IPIPE */ - SP += -12; - pseudo_long_call _schedule_tail, p5; - SP += 12; - p1 = [sp++]; - r0 = [sp++]; - cc = p1 == 0; - if cc jump .Lfork; - sp += -12; - call (p1); - sp += 12; -.Lfork: - RESTORE_CONTEXT - rti; -ENDPROC(_ret_from_fork) |