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author | 2018-04-02 20:20:12 -0700 | |
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committer | 2018-04-02 20:20:12 -0700 | |
commit | f5a8eb632b562bd9c16c389f5db3a5260fba4157 (patch) | |
tree | 82687234d772ff8f72a31e598fe16553885c56c9 /arch/score/include/asm/scoreregs.h | |
parent | Merge tag 'nds32-for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux (diff) | |
parent | MAINTAINERS: UNICORE32: Change email account (diff) | |
download | wireguard-linux-f5a8eb632b562bd9c16c389f5db3a5260fba4157.tar.xz wireguard-linux-f5a8eb632b562bd9c16c389f5db3a5260fba4157.zip |
Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pul removal of obsolete architecture ports from Arnd Bergmann:
"This removes the entire architecture code for blackfin, cris, frv,
m32r, metag, mn10300, score, and tile, including the associated device
drivers.
I have been working with the (former) maintainers for each one to
ensure that my interpretation was right and the code is definitely
unused in mainline kernels. Many had fond memories of working on the
respective ports to start with and getting them included in upstream,
but also saw no point in keeping the port alive without any users.
In the end, it seems that while the eight architectures are extremely
different, they all suffered the same fate: There was one company in
charge of an SoC line, a CPU microarchitecture and a software
ecosystem, which was more costly than licensing newer off-the-shelf
CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
seems that all the SoC product lines are still around, but have not
used the custom CPU architectures for several years at this point. In
contrast, CPU instruction sets that remain popular and have actively
maintained kernel ports tend to all be used across multiple licensees.
[ See the new nds32 port merged in the previous commit for the next
generation of "one company in charge of an SoC line, a CPU
microarchitecture and a software ecosystem" - Linus ]
The removal came out of a discussion that is now documented at
https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
marking any ports as deprecated but remove them all at once after I
made sure that they are all unused. Some architectures (notably tile,
mn10300, and blackfin) are still being shipped in products with old
kernels, but those products will never be updated to newer kernel
releases.
After this series, we still have a few architectures without mainline
gcc support:
- unicore32 and hexagon both have very outdated gcc releases, but the
maintainers promised to work on providing something newer. At least
in case of hexagon, this will only be llvm, not gcc.
- openrisc, risc-v and nds32 are still in the process of finishing
their support or getting it added to mainline gcc in the first
place. They all have patched gcc-7.3 ports that work to some
degree, but complete upstream support won't happen before gcc-8.1.
Csky posted their first kernel patch set last week, their situation
will be similar
[ Palmer Dabbelt points out that RISC-V support is in mainline gcc
since gcc-7, although gcc-7.3.0 is the recommended minimum - Linus ]"
This really says it all:
2498 files changed, 95 insertions(+), 467668 deletions(-)
* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
MAINTAINERS: UNICORE32: Change email account
staging: iio: remove iio-trig-bfin-timer driver
tty: hvc: remove tile driver
tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
serial: remove tile uart driver
serial: remove m32r_sio driver
serial: remove blackfin drivers
serial: remove cris/etrax uart drivers
usb: Remove Blackfin references in USB support
usb: isp1362: remove blackfin arch glue
usb: musb: remove blackfin port
usb: host: remove tilegx platform glue
pwm: remove pwm-bfin driver
i2c: remove bfin-twi driver
spi: remove blackfin related host drivers
watchdog: remove bfin_wdt driver
can: remove bfin_can driver
mmc: remove bfin_sdh driver
input: misc: remove blackfin rotary driver
input: keyboard: remove bf54x driver
...
Diffstat (limited to 'arch/score/include/asm/scoreregs.h')
-rw-r--r-- | arch/score/include/asm/scoreregs.h | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/arch/score/include/asm/scoreregs.h b/arch/score/include/asm/scoreregs.h deleted file mode 100644 index ff8d20a49aa7..000000000000 --- a/arch/score/include/asm/scoreregs.h +++ /dev/null @@ -1,52 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_SCORE_SCOREREGS_H -#define _ASM_SCORE_SCOREREGS_H - -#include <linux/linkage.h> - -/* TIMER register */ -#define TIME0BASE 0x96080000 -#define P_TIMER0_CTRL (TIME0BASE + 0x00) -#define P_TIMER0_CPP_CTRL (TIME0BASE + 0x04) -#define P_TIMER0_PRELOAD (TIME0BASE + 0x08) -#define P_TIMER0_CPP_REG (TIME0BASE + 0x0C) -#define P_TIMER0_UPCNT (TIME0BASE + 0x10) - -/* Timer Controller Register */ -/* bit 0 Timer enable */ -#define TMR_DISABLE 0x0000 -#define TMR_ENABLE 0x0001 - -/* bit 1 Interrupt enable */ -#define TMR_IE_DISABLE 0x0000 -#define TMR_IE_ENABLE 0x0002 - -/* bit 2 Output enable */ -#define TMR_OE_DISABLE 0x0004 -#define TMR_OE_ENABLE 0x0000 - -/* bit4 Up/Down counting selection */ -#define TMR_UD_DOWN 0x0000 -#define TMR_UD_UP 0x0010 - -/* bit5 Up/Down counting control selection */ -#define TMR_UDS_UD 0x0000 -#define TMR_UDS_EXTUD 0x0020 - -/* bit6 Time output mode */ -#define TMR_OM_TOGGLE 0x0000 -#define TMR_OM_PILSE 0x0040 - -/* bit 8..9 External input active edge selection */ -#define TMR_ES_PE 0x0000 -#define TMR_ES_NE 0x0100 -#define TMR_ES_BOTH 0x0200 - -/* bit 10..11 Operating mode */ -#define TMR_M_FREE 0x0000 /* free running timer mode */ -#define TMR_M_PERIODIC 0x0400 /* periodic timer mode */ -#define TMR_M_FC 0x0800 /* free running counter mode */ -#define TMR_M_PC 0x0c00 /* periodic counter mode */ - -#define SYSTEM_CLOCK (27*1000000/4) /* 27 MHz */ -#endif /* _ASM_SCORE_SCOREREGS_H */ |