From 5829a06e3add5dfe015c63b5c0686c7eb33fc3fb Mon Sep 17 00:00:00 2001
From: Imbus <>
Date: Wed, 7 Aug 2024 14:33:58 +0200
Subject: [PATCH] Capitalizing and reformatting comments

---
 kernel/start.c | 46 +++++++++++++++++++++++-----------------------
 1 file changed, 23 insertions(+), 23 deletions(-)

diff --git a/kernel/start.c b/kernel/start.c
index f6d36cb..fa199be 100644
--- a/kernel/start.c
+++ b/kernel/start.c
@@ -6,69 +6,69 @@
 void main();
 void timerinit();
 
-// entry.S needs one stack per CPU.
+// Entry.S needs one stack per CPU.
 __attribute__((aligned(16))) char stack0[4096 * NCPU];
 
-// a scratch area per CPU for machine-mode timer interrupts.
+// A scratch area per CPU for machine-mode timer interrupts.
 u64 timer_scratch[NCPU][5];
 
-// assembly code in kernelvec.S for machine-mode timer interrupt.
+// Assembly code in kernelvec.S for machine-mode timer interrupt.
 extern void timervec();
 
-// entry.S jumps here in machine mode on stack0.
+// Entry.S jumps here in machine mode on stack0.
 void
 start()
 {
-  // set M Previous Privilege mode to Supervisor, for mret.
+  // Set M Previous Privilege mode to Supervisor, for mret.
   unsigned long x = r_mstatus();
   x &= ~MSTATUS_MPP_MASK;
   x |= MSTATUS_MPP_S;
   w_mstatus(x);
 
-  // set M Exception Program Counter to main, for mret.
-  // requires gcc -mcmodel=medany
+  // Set M Exception Program Counter to main, for mret.
+  // Requires gcc -mcmodel=medany
   w_mepc((u64)main);
 
-  // disable paging for now.
+  // Disable paging for now.
   w_satp(0);
 
-  // delegate all interrupts and exceptions to supervisor mode.
+  // Delegate all interrupts and exceptions to supervisor mode.
   w_medeleg(0xffff);
   w_mideleg(0xffff);
   w_sie(r_sie() | SIE_SEIE | SIE_STIE | SIE_SSIE);
 
-  // configure Physical Memory Protection to give supervisor mode
-  // access to all of physical memory.
+  // Configure Physical Memory Protection to give supervisor mode
+  // Access to all of physical memory.
   w_pmpaddr0(0x3fffffffffffffull);
   w_pmpcfg0(0xf);
 
-  // ask for clock interrupts.
+  // Ask for clock interrupts.
   timerinit();
 
-  // keep each CPU's hartid in its tp register, for cpuid().
+  // Keep each CPU's hartid in its tp register, for cpuid().
   int id = r_mhartid();
   w_tp(id);
 
-  // switch to supervisor mode and jump to main().
+  // Switch to supervisor mode and jump to main().
   asm volatile("mret");
 }
 
-// arrange to receive timer interrupts.
-// they will arrive in machine mode at
+// Arrange to receive timer interrupts.
+// They will arrive in machine mode at
 // at timervec in kernelvec.S,
 // which turns them into software interrupts for
 // devintr() in trap.c.
 void
 timerinit()
 {
-  // each CPU has a separate source of timer interrupts.
+  // Each CPU has a separate source of timer interrupts.
   int id = r_mhartid();
 
-  // ask the CLINT for a timer interrupt.
-  int interval = 1000000; // cycles; about 1/10th second in qemu.
+  // Ask the CLINT for a timer interrupt.
+  int interval = 1000000; // Cycles; about 1/10th second in qemu.
   *(u64 *)CLINT_MTIMECMP(id) = *(u64 *)CLINT_MTIME + interval;
 
-  // prepare information in scratch[] for timervec.
+  // Prepare information in scratch[] for timervec.
   // scratch[0..2] : space for timervec to save registers.
   // scratch[3] : address of CLINT MTIMECMP register.
   // scratch[4] : desired interval (in cycles) between timer interrupts.
@@ -77,12 +77,12 @@ timerinit()
   scratch[4] = interval;
   w_mscratch((u64)scratch);
 
-  // set the machine-mode trap handler.
+  // Set the machine-mode trap handler.
   w_mtvec((u64)timervec);
 
-  // enable machine-mode interrupts.
+  // Enable machine-mode interrupts.
   w_mstatus(r_mstatus() | MSTATUS_MIE);
 
-  // enable machine-mode timer interrupts.
+  // Enable machine-mode timer interrupts.
   w_mie(r_mie() | MIE_MTIE);
 }