diff options
| author | Vicente Olivert Riera <Vincent.Riera@imgtec.com> | 2016-11-09 16:16:57 +0000 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2016-11-09 21:36:34 +0100 |
| commit | 240564a6933d9300473b5ced02d2f6f2a2fa4cd9 (patch) | |
| tree | 041f93eeb38b46cceed6872a6160b88397d45988 /arch | |
| parent | d13b1ce707fb609e53164e1ae4281e1e3e7c84ac (diff) | |
arch/Config.in.mips: add support for XBurst cores
The Ingenic XBurst is a MIPS32R2 microprocessor.
It has a bug in the FPU that can generate incorrect results in certain
cases. The problem shows up when you have several fused madd
instructions in sequence with dependant operands.
Using the -mno-fused-madd option prevents gcc from emitting these
instructions. This patch adds changes to the toolchain wrapper to use
that option.
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/Config.in.mips | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/Config.in.mips b/arch/Config.in.mips index 3662fedca..1021a579b 100644 --- a/arch/Config.in.mips +++ b/arch/Config.in.mips @@ -63,6 +63,19 @@ config BR2_mips_p5600 bool "P5600" depends on !BR2_ARCH_IS_64 select BR2_MIPS_CPU_MIPS32R5 +config BR2_mips_xburst + bool "XBurst" + depends on !BR2_ARCH_IS_64 + select BR2_MIPS_CPU_MIPS32R2 + help + The Ingenic XBurst is a MIPS32R2 microprocessor. It has a + bug in the FPU that can generate incorrect results in + certain cases. The problem shows up when you have several + fused madd instructions in sequence with dependant + operands. This requires the -mno-fused-madd compiler option + to be used in order to prevent emitting these instructions. + + See http://www.ingenic.com/en/?xburst.html config BR2_mips_64 bool "Generic MIPS64" depends on BR2_ARCH_IS_64 @@ -137,6 +150,7 @@ config BR2_GCC_TARGET_ARCH default "m5101" if BR2_mips_m5101 default "m6201" if BR2_mips_m6201 default "p5600" if BR2_mips_p5600 + default "mips32r2" if BR2_mips_xburst default "mips64" if BR2_mips_64 default "mips64r2" if BR2_mips_64r2 default "mips64r5" if BR2_mips_64r5 |