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- mtmips: network stability fixes for gardena-smart-gateway
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This commit is contained in:
commit
0bd2a92f54
2 changed files with 27 additions and 1 deletions
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@ -84,13 +84,13 @@ config ARCH_MTMIPS
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select DM_SERIAL
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imply DM_SPI
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imply DM_SPI_FLASH
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select LAST_STAGE_INIT
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select MIPS_TUNE_24KC
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select OF_CONTROL
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select ROM_EXCEPTION_VECTORS
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select SUPPORTS_CPU_MIPS32_R1
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select SUPPORTS_CPU_MIPS32_R2
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select SUPPORTS_LITTLE_ENDIAN
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select SYS_MALLOC_CLEAR_ON_INIT
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select SYSRESET
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config ARCH_JZ47XX
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@ -68,3 +68,29 @@ int print_cpuinfo(void)
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return 0;
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}
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int last_stage_init(void)
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{
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void *src, *dst;
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src = malloc(SZ_64K);
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dst = malloc(SZ_64K);
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if (!src || !dst) {
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printf("Can't allocate buffer for cache cleanup copy!\n");
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return 0;
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}
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/*
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* It has been noticed, that sometimes the d-cache is not in a
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* "clean-state" when U-Boot is running on MT7688. This was
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* detected when using the ethernet driver (which uses d-cache)
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* and a TFTP command does not complete. Copying an area of 64KiB
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* in DDR at a very late bootup time in U-Boot, directly before
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* calling into the prompt, seems to fix this issue.
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*/
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memcpy(dst, src, SZ_64K);
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free(src);
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free(dst);
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return 0;
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}
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