[bios] Add bin-x86_64-pcbios build platform

Move most arch/i386 files to arch/x86, and adjust the contents of the
Makefiles and the include/bits/*.h headers to reflect the new
locations.

This patch makes no substantive code changes, as can be seen using a
rename-aware diff (e.g. "git show -M5").

This patch does not make the pcbios platform functional for x86_64; it
merely allows it to compile without errors.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 0 insertions, 199 deletions

diff --git a/src/arch/i386/interface/pcbios/rtc_entropy.c b/src/arch/i386/interface/pcbios/rtc_entropy.c
deleted file mode 100644
index 6e7ac833e..000000000
--- a/src/arch/i386/interface/pcbios/rtc_entropy.c
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- * You can also choose to distribute this program under the terms of
- * the Unmodified Binary Distribution Licence (as given in the file
- * COPYING.UBDL), provided that you have satisfied its requirements.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
-/** @file
- *
- * RTC-based entropy source
- *
- */
-
-#include <stdint.h>
-#include <string.h>
-#include <biosint.h>
-#include <pic8259.h>
-#include <rtc.h>
-#include <ipxe/entropy.h>
-
-/** RTC interrupt handler */
-extern void rtc_isr ( void );
-
-/** Previous RTC interrupt handler */
-static struct segoff rtc_old_handler;
-
-/**
- * Hook RTC interrupt handler
- *
- */
-static void rtc_hook_isr ( void ) {
-
-	/* RTC interrupt handler */
-	__asm__ __volatile__ (
-		TEXT16_CODE ( "\nrtc_isr:\n\t"
-			      /* Preserve registers */
-			      "pushw %%ax\n\t"
-			      /* Set "interrupt triggered" flag */
-			      "movb $0x01, %%cs:rtc_flag\n\t"
-			      /* Read RTC status register C to
-			       * acknowledge interrupt
-			       */
-			      "movb %2, %%al\n\t"
-			      "outb %%al, %0\n\t"
-			      "inb %1\n\t"
-			      /* Send EOI */
-			      "movb $0x20, %%al\n\t"
-			      "outb %%al, $0xa0\n\t"
-			      "outb %%al, $0x20\n\t"
-			      /* Restore registers and return */
-			      "popw %%ax\n\t"
-			      "iret\n\t"
-			      "\nrtc_flag:\n\t"
-			      ".byte 0\n\t" )
-		:
-		: "i" ( CMOS_ADDRESS ), "i" ( CMOS_DATA ),
-		  "i" ( RTC_STATUS_C ) );
-
-	hook_bios_interrupt ( RTC_INT, ( intptr_t ) rtc_isr, &rtc_old_handler );
-}
-
-/**
- * Unhook RTC interrupt handler
- *
- */
-static void rtc_unhook_isr ( void ) {
-	int rc;
-
-	rc = unhook_bios_interrupt ( RTC_INT, ( intptr_t ) rtc_isr,
-				     &rtc_old_handler );
-	assert ( rc == 0 ); /* Should always be able to unhook */
-}
-
-/**
- * Enable RTC interrupts
- *
- */
-static void rtc_enable_int ( void ) {
-	uint8_t status_b;
-
-	/* Set Periodic Interrupt Enable bit in status register B */
-	outb ( ( RTC_STATUS_B | CMOS_DISABLE_NMI ), CMOS_ADDRESS );
-	status_b = inb ( CMOS_DATA );
-	outb ( ( RTC_STATUS_B | CMOS_DISABLE_NMI ), CMOS_ADDRESS );
-	outb ( ( status_b | RTC_STATUS_B_PIE ), CMOS_DATA );
-
-	/* Re-enable NMI and reset to default address */
-	outb ( CMOS_DEFAULT_ADDRESS, CMOS_ADDRESS );
-	inb ( CMOS_DATA ); /* Discard; may be needed on some platforms */
-}
-
-/**
- * Disable RTC interrupts
- *
- */
-static void rtc_disable_int ( void ) {
-	uint8_t status_b;
-
-	/* Clear Periodic Interrupt Enable bit in status register B */
-	outb ( ( RTC_STATUS_B | CMOS_DISABLE_NMI ), CMOS_ADDRESS );
-	status_b = inb ( CMOS_DATA );
-	outb ( ( RTC_STATUS_B | CMOS_DISABLE_NMI ), CMOS_ADDRESS );
-	outb ( ( status_b & ~RTC_STATUS_B_PIE ), CMOS_DATA );
-
-	/* Re-enable NMI and reset to default address */
-	outb ( CMOS_DEFAULT_ADDRESS, CMOS_ADDRESS );
-	inb ( CMOS_DATA ); /* Discard; may be needed on some platforms */
-}
-
-/**
- * Enable entropy gathering
- *
- * @ret rc		Return status code
- */
-static int rtc_entropy_enable ( void ) {
-
-	rtc_hook_isr();
-	enable_irq ( RTC_IRQ );
-	rtc_enable_int();
-
-	return 0;
-}
-
-/**
- * Disable entropy gathering
- *
- */
-static void rtc_entropy_disable ( void ) {
-
-	rtc_disable_int();
-	disable_irq ( RTC_IRQ );
-	rtc_unhook_isr();
-}
-
-/**
- * Measure a single RTC tick
- *
- * @ret delta		Length of RTC tick (in TSC units)
- */
-uint8_t rtc_sample ( void ) {
-	uint32_t before;
-	uint32_t after;
-	uint32_t temp;
-
-	__asm__ __volatile__ (
-		REAL_CODE ( /* Enable interrupts */
-			    "sti\n\t"
-			    /* Wait for RTC interrupt */
-			    "movb %b2, %%cs:rtc_flag\n\t"
-			    "\n1:\n\t"
-			    "xchgb %b2, %%cs:rtc_flag\n\t" /* Serialize */
-			    "testb %b2, %b2\n\t"
-			    "jz 1b\n\t"
-			    /* Read "before" TSC */
-			    "rdtsc\n\t"
-			    /* Store "before" TSC on stack */
-			    "pushl %0\n\t"
-			    /* Wait for another RTC interrupt */
-			    "xorb %b2, %b2\n\t"
-			    "movb %b2, %%cs:rtc_flag\n\t"
-			    "\n1:\n\t"
-			    "xchgb %b2, %%cs:rtc_flag\n\t" /* Serialize */
-			    "testb %b2, %b2\n\t"
-			    "jz 1b\n\t"
-			    /* Read "after" TSC */
-			    "rdtsc\n\t"
-			    /* Retrieve "before" TSC on stack */
-			    "popl %1\n\t"
-			    /* Disable interrupts */
-			    "cli\n\t"
-			    )
-		: "=a" ( after ), "=d" ( before ), "=q" ( temp )
-		: "2" ( 0 ) );
-
-	return ( after - before );
-}
-
-PROVIDE_ENTROPY_INLINE ( rtc, min_entropy_per_sample );
-PROVIDE_ENTROPY ( rtc, entropy_enable, rtc_entropy_enable );
-PROVIDE_ENTROPY ( rtc, entropy_disable, rtc_entropy_disable );
-PROVIDE_ENTROPY_INLINE ( rtc, get_noise );