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VME64x core
Commit 9197cf12 authored by Tristan Gingold's avatar Tristan Gingold
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cr_csr: handle the reset bit as a pulse.

parent 40557d7a
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hdl/vme64x-core/rtl/VME_CR_CSR_Space.vhd
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...@@ -354,6 +354,12 @@ begin ...@@ -354,6 +354,12 @@ begin
s_reg_ader <= (others => x"00000000"); s_reg_ader <= (others => x"00000000");
else else
if we_i = '1' and s_csr_access = '1' then if we_i = '1' and s_csr_access = '1' then
-- FIXME: the SVEC linux driver assume that this bit is just a
-- pulse, and doesn't clear it. Follow this legacy (and incorrect)
-- behaviour to be compatible with the driver. The reset bit will
-- be cleared at the next CSR write access.
s_reg_bit_reg(c_RESET_BIT) <= '0';
csr_idx := s_addr(7 downto 4); csr_idx := s_addr(7 downto 4);
csr_boff := s_addr(3 downto 2); csr_boff := s_addr(3 downto 2);
case csr_idx is case csr_idx is
......
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