[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/arch/powerpc/math-emu/mtfsf.c b/src/kernel/linux/v4.19/arch/powerpc/math-emu/mtfsf.c
new file mode 100644
index 0000000..7ae990f
--- /dev/null
+++ b/src/kernel/linux/v4.19/arch/powerpc/math-emu/mtfsf.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/uaccess.h>
+
+#include <asm/sfp-machine.h>
+#include <math-emu/soft-fp.h>
+
+int
+mtfsf(unsigned int FM, u32 *frB)
+{
+ u32 mask;
+ u32 fpscr;
+
+ if (likely(FM == 1))
+ mask = 0x0f;
+ else if (likely(FM == 0xff))
+ mask = ~0;
+ else {
+ mask = ((FM & 1) |
+ ((FM << 3) & 0x10) |
+ ((FM << 6) & 0x100) |
+ ((FM << 9) & 0x1000) |
+ ((FM << 12) & 0x10000) |
+ ((FM << 15) & 0x100000) |
+ ((FM << 18) & 0x1000000) |
+ ((FM << 21) & 0x10000000)) * 15;
+ }
+
+ fpscr = ((__FPU_FPSCR & ~mask) | (frB[1] & mask)) &
+ ~(FPSCR_VX | FPSCR_FEX | 0x800);
+
+ if (fpscr & (FPSCR_VXSNAN | FPSCR_VXISI | FPSCR_VXIDI |
+ FPSCR_VXZDZ | FPSCR_VXIMZ | FPSCR_VXVC |
+ FPSCR_VXSOFT | FPSCR_VXSQRT | FPSCR_VXCVI))
+ fpscr |= FPSCR_VX;
+
+ /* The bit order of exception enables and exception status
+ * is the same. Simply shift and mask to check for enabled
+ * exceptions.
+ */
+ if (fpscr & (fpscr >> 22) & 0xf8)
+ fpscr |= FPSCR_FEX;
+
+ __FPU_FPSCR = fpscr;
+
+#ifdef DEBUG
+ printk("%s: %02x %p: %08lx\n", __func__, FM, frB, __FPU_FPSCR);
+#endif
+
+ return 0;
+}