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authorRalf Baechle <ralf@linux-mips.org>2015-07-14 21:41:12 +0200
committerRalf Baechle <ralf@linux-mips.org>2015-07-14 21:47:34 +0200
commitdd0bc75ee3ec4ef694c2d0483b6ffeed17141435 (patch)
tree81bcaccf8c3a6c197707101f3da9d85fa8077431 /arch/mips/sibyte
parent4e9d324d4288b082497c30bc55b8ad13acc7cf01 (diff)
downloadop-kernel-dev-dd0bc75ee3ec4ef694c2d0483b6ffeed17141435.zip
op-kernel-dev-dd0bc75ee3ec4ef694c2d0483b6ffeed17141435.tar.gz
MIPS: SB1: Remove support for Pass 1 parts.
Pass 1 parts had a number of significant erratas and were only available in small numbers and under NDA. Full support also required the use of a special toolchain that kept branches properly aligned. These workarounds were never upstreamed and the only toolchain known to have them is Montavista's GCC 3.0-based toolchain which completly obsoleted if not useless these days. So now that automated testing has tripped over the user of the -msb1-pass1-workarounds option, rather than fixing it remove support for pass 1 parts. Probably nobody will notice. I seem to own the last know pass 1 board and I haven't noticed another one in the wild in the past decade, at least. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/sibyte')
-rw-r--r--arch/mips/sibyte/Kconfig5
-rw-r--r--arch/mips/sibyte/common/bus_watcher.c5
-rw-r--r--arch/mips/sibyte/sb1250/setup.c2
3 files changed, 1 insertions, 11 deletions
diff --git a/arch/mips/sibyte/Kconfig b/arch/mips/sibyte/Kconfig
index a8bb972..cb9a095 100644
--- a/arch/mips/sibyte/Kconfig
+++ b/arch/mips/sibyte/Kconfig
@@ -81,11 +81,6 @@ choice
prompt "SiByte SOC Stepping"
depends on SIBYTE_SB1xxx_SOC
-config CPU_SB1_PASS_1
- bool "1250 Pass1"
- depends on SIBYTE_SB1250
- select CPU_HAS_PREFETCH
-
config CPU_SB1_PASS_2_1250
bool "1250 An"
depends on SIBYTE_SB1250
diff --git a/arch/mips/sibyte/common/bus_watcher.c b/arch/mips/sibyte/common/bus_watcher.c
index 5581844..41a1d22 100644
--- a/arch/mips/sibyte/common/bus_watcher.c
+++ b/arch/mips/sibyte/common/bus_watcher.c
@@ -81,10 +81,7 @@ void check_bus_watcher(void)
{
u32 status, l2_err, memio_err;
-#ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
- /* Destructive read, clears register and interrupt */
- status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS));
-#elif defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250)
+#if defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250)
/* Use non-destructive register */
status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS_DEBUG));
#elif defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
diff --git a/arch/mips/sibyte/sb1250/setup.c b/arch/mips/sibyte/sb1250/setup.c
index 3c02b2a..9d3c24e 100644
--- a/arch/mips/sibyte/sb1250/setup.c
+++ b/arch/mips/sibyte/sb1250/setup.c
@@ -202,12 +202,10 @@ void __init sb1250_setup(void)
switch (war_pass) {
case K_SYS_REVISION_BCM1250_PASS1:
-#ifndef CONFIG_SB1_PASS_1_WORKAROUNDS
printk("@@@@ This is a BCM1250 A0-A2 (Pass 1) board, "
"and the kernel doesn't have the proper "
"workarounds compiled in. @@@@\n");
bad_config = 1;
-#endif
break;
case K_SYS_REVISION_BCM1250_PASS2:
/* Pass 2 - easiest as default for now - so many numbers */
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