Lines Matching defs:csum
63 static void nvram_set_csum(u_char csum);
64 static int nvram_csum_valid(u_char csum);
182 uint8_t csum;
185 for (csum = 0, nreg = MC_NVRAM_START; nreg < MC_NVRAM_CSUM; nreg++)
186 csum += mc146818_read(RTC, nreg);
187 return csum;
191 nvram_csum_valid(u_char csum)
194 if (((~csum & 0xff) != mc146818_read(RTC, MC_NVRAM_CSUM))
195 || (csum != mc146818_read(RTC, MC_NVRAM_CSUM + 1)))
201 nvram_set_csum(u_char csum)
204 mc146818_write(RTC, MC_NVRAM_CSUM, ~csum);
205 mc146818_write(RTC, MC_NVRAM_CSUM + 1, csum);
Indexes created Mon Sep 29 21:09:56 GMT 2025