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NOP Loop before and after initing MMU #64

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NOP Loop before and after initing MMU #64

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17 changes: 17 additions & 0 deletions arch/risc-v/src/sg2000/sg2000_mm_init.c
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Original file line number Diff line number Diff line change
Expand Up @@ -293,7 +293,24 @@ void sg2000_mm_init(void)
/* Enable MMU */

binfo("mmu_enable: satp=%" PRIuPTR "\n", g_kernel_pgt_pbase);

//// Begin Debug
up_putc('\n');
_info("Before MMU: mmu_enable(g_kernel_pgt_pbase, 0);");
up_putc('0');
for (uint32_t i = 0; i < 40000000; i++) { asm("nop"); }
up_putc('1');
//// End Debug

mmu_enable(g_kernel_pgt_pbase, 0);

//// Begin Debug
up_putc('\n');
_info("After MMU: mmu_enable(g_kernel_pgt_pbase, 0);");
up_putc('0');
for (uint32_t i = 0; i < 40000000; i++) { asm("nop"); }
up_putc('1');
//// End Debug
}

/****************************************************************************
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