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authorSimon Glass <sjg@chromium.org>2020-07-03 06:12:12 +0300
committerBin Meng <bmeng.cn@gmail.com>2020-07-09 07:33:24 +0300
commit3dada5a1a89f336f4b751548117949cf255cfcf6 (patch)
tree3694a1863dae64f0ef7c4363d8cf607b52340cb7 /arch/x86/lib/fsp2
parent61608f395e7dcb2be6060407a72a1149b046430a (diff)
downloadu-boot-3dada5a1a89f336f4b751548117949cf255cfcf6.tar.xz
x86: fsp: Reinit the FPU after FSP meminit
The APL FSP appears to leave the FPU in a bad state in that it has registers in use. This causes an error when the next FPU operation is performed. Work around this by re-resetting the FPU after calling FSP-M. This allows the freetype console to work correctly. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86/lib/fsp2')
-rw-r--r--arch/x86/lib/fsp2/fsp_meminit.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/lib/fsp2/fsp_meminit.c b/arch/x86/lib/fsp2/fsp_meminit.c
index 1a758147b0..faf9c29aef 100644
--- a/arch/x86/lib/fsp2/fsp_meminit.c
+++ b/arch/x86/lib/fsp2/fsp_meminit.c
@@ -85,6 +85,7 @@ int fsp_memory_init(bool s3wake, bool use_spi_flash)
func = (fsp_memory_init_func)(hdr->img_base + hdr->fsp_mem_init);
ret = func(&upd, &hob);
bootstage_accum(BOOTSTAGE_ID_ACCUM_FSP_M);
+ cpu_reinit_fpu();
if (ret)
return log_msg_ret("SDRAM init fail\n", ret);