69 lines
2.0 KiB
Python
69 lines
2.0 KiB
Python
from migen.bank.description import CSRStatus
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def _get_rw_functions(reg_name, reg_base, size, read_only):
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r = ""
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r += "#define CSR_"+reg_name.upper()+"_ADDR "+hex(reg_base)+"\n"
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r += "#define CSR_"+reg_name.upper()+"_SIZE "+str(size)+"\n"
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if size > 8:
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raise NotImplementedError("Register too large")
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elif size > 4:
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ctype = "unsigned long long int"
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elif size > 2:
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ctype = "unsigned int"
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elif size > 1:
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ctype = "unsigned short int"
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else:
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ctype = "unsigned char"
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r += "static inline "+ctype+" "+reg_name+"_read(void) {\n"
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if size > 1:
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r += "\t"+ctype+" r = MMPTR("+hex(reg_base)+");\n"
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for byte in range(1, size):
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r += "\tr <<= 8;\n\tr |= MMPTR("+hex(reg_base+4*byte)+");\n"
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r += "\treturn r;\n}\n"
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else:
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r += "\treturn MMPTR("+hex(reg_base)+");\n}\n"
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if not read_only:
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r += "static inline void "+reg_name+"_write("+ctype+" value) {\n"
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for byte in range(size):
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shift = (size-byte-1)*8
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if shift:
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value_shifted = "value >> "+str(shift)
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else:
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value_shifted = "value"
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r += "\tMMPTR("+hex(reg_base+4*byte)+") = "+value_shifted+";\n"
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r += "}\n"
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return r
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def get_csr_header(csr_base, bank_array, interrupt_map):
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r = "#ifndef __HW_CSR_H\n#define __HW_CSR_H\n#include <hw/common.h>\n"
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for name, csrs, mapaddr, rmap in bank_array.banks:
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r += "\n/* "+name+" */\n"
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reg_base = csr_base + 0x800*mapaddr
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r += "#define "+name.upper()+"_BASE "+hex(reg_base)+"\n"
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for csr in csrs:
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nr = (csr.size + 7)//8
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r += _get_rw_functions(name + "_" + csr.name, reg_base, nr, isinstance(csr, CSRStatus))
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reg_base += 4*nr
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try:
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interrupt_nr = interrupt_map[name]
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except KeyError:
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pass
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else:
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r += "#define "+name.upper()+"_INTERRUPT "+str(interrupt_nr)+"\n"
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r += "\n#endif\n"
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return r
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def get_csr_csv(csr_base, bank_array):
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r = ""
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for name, csrs, mapaddr, rmap in bank_array.banks:
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reg_base = csr_base + 0x800*mapaddr
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for csr in csrs:
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nr = (csr.size + 7)//8
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r += "{}_{},0x{:08x},{},{}\n".format(name, csr.name, reg_base, nr, "ro" if isinstance(csr, CSRStatus) else "rw")
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reg_base += 4*nr
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return r
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