kbuild: Allow drivers to fit src/drivers/[X]/[Y]/ scheme

Reorder drivers to fit src/drivers/[X]/[Y]/ scheme to make
them pluggable.

Also, fix up the following driver subdirectories by switching
to the src/drivers/[X]/[Y]/ scheme as these are hard requirements
for the main change:

* drivers/intel
* drivers/pc80
* drivers/dec

Change-Id: I455d3089a317181d5b99bf658df759ec728a5f6b
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/14047
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

15 files changed, 92 insertions, 73 deletions

diff --git a/src/drivers/pc80/Kconfig b/src/drivers/pc80/pc/Kconfig
index 18c626c7cb..c44cf9144d 100644
--- a/src/drivers/pc80/Kconfig
+++ b/src/drivers/pc80/pc/Kconfig
@@ -1,10 +1,10 @@
 # Might be removed (alongside with the PS/2 init code) once payloads
 # reliably support PS/2 init themselves.
-if PC80_SYSTEM
 
 config DRIVERS_PS2_KEYBOARD
 	bool "PS/2 keyboard init"
 	default n
+	depends on PC80_SYSTEM
 	help
 	  Enable this option to initialize PS/2 keyboards found connected
 	  to the PS/2 port.
@@ -16,12 +16,3 @@ config DRIVERS_PS2_KEYBOARD
 	  If you know you will only use a payload which does not require
 	  this option, then you can say N here to speed up boot time.
 	  Otherwise say Y.
-
-config DRIVERS_MC146818
-	bool
-	default y if ARCH_X86
-	select RTC
-
-source src/drivers/pc80/tpm/Kconfig
-
-endif
diff --git a/src/drivers/pc80/pc/Makefile.inc b/src/drivers/pc80/pc/Makefile.inc
new file mode 100644
index 0000000000..8c348e323e
--- /dev/null
+++ b/src/drivers/pc80/pc/Makefile.inc
@@ -0,0 +1,12 @@
+ifeq ($(CONFIG_ARCH_X86),y)
+
+ramstage-y += isa-dma.c
+ramstage-y += i8254.c
+ramstage-y += i8259.c
+ramstage-$(CONFIG_UDELAY_IO) += udelay_io.c
+romstage-$(CONFIG_UDELAY_IO) += udelay_io.c
+ramstage-y += keyboard.c
+ramstage-$(CONFIG_SPKMODEM) += spkmodem.c
+romstage-$(CONFIG_SPKMODEM) += spkmodem.c
+
+endif
diff --git a/src/drivers/pc80/i8254.c b/src/drivers/pc80/pc/i8254.c
index 5851ec08a0..5851ec08a0 100644
--- a/src/drivers/pc80/i8254.c
+++ b/src/drivers/pc80/pc/i8254.c
diff --git a/src/drivers/pc80/i8259.c b/src/drivers/pc80/pc/i8259.c
index 1cb49b1206..4261d5bec4 100644
--- a/src/drivers/pc80/i8259.c
+++ b/src/drivers/pc80/pc/i8259.c
@@ -29,7 +29,7 @@ u16 pic_read_irq_mask(void)
 	printk(BIOS_DEBUG, "8259 PIC: OCW1 IRQ Mask: 0x%x\n", mask);
 	printk(BIOS_SPEW, "\tEnabled IRQs (0 = Unmasked, 1 = Masked off):\n"
 			"\t\tMaster\t\tSlave\n");
-	for(i = 0; i <= 7; i++) {
+	for (i = 0; i <= 7; i++) {
 		printk(BIOS_SPEW, "\t\tIRQ%X: %x\t\tIRQ%X: %x\n",
 				i, (mask >> i) & 1, i + 8, (mask >> (i + 8)) & 1);
 	}
@@ -53,8 +53,8 @@ void pic_write_irq_mask(u16 mask)
  */
 void pic_irq_enable(u8 int_num, u8 mask)
 {
-    pic_write_irq_mask(pic_read_irq_mask() & ~(mask << int_num));
-    pic_read_irq_mask();
+	pic_write_irq_mask(pic_read_irq_mask() & ~(mask << int_num));
+	pic_read_irq_mask();
 }
 
 void setup_i8259(void)
@@ -124,7 +124,8 @@ void i8259_configure_irq_trigger(int int_num, int is_level_triggered)
 	outb((u8)(int_bits >> 8), ELCR2);
 
 #ifdef PARANOID_IRQ_TRIGGERS
-	/* Try reading back the new values. This seems like an error but is not ... */
+	/* Try reading back the new values. This seems like an error
+	 * but it is not. */
 	if (inb(ELCR1) != (int_bits & 0xff)) {
 		printk(BIOS_ERR, "%s: lower order bits are wrong: want 0x%x, got 0x%x\n",
 				__func__, (int_bits & 0xff), inb(ELCR1));
diff --git a/src/drivers/pc80/isa-dma.c b/src/drivers/pc80/pc/isa-dma.c
index b64f125f3a..b64f125f3a 100644
--- a/src/drivers/pc80/isa-dma.c
+++ b/src/drivers/pc80/pc/isa-dma.c
diff --git a/src/drivers/pc80/keyboard.c b/src/drivers/pc80/pc/keyboard.c
index 56b1fce93b..415dbd1d13 100644
--- a/src/drivers/pc80/keyboard.c
+++ b/src/drivers/pc80/pc/keyboard.c
@@ -67,6 +67,7 @@
 static int kbc_input_buffer_empty(void)
 {
 	u32 timeout;
+
 	for (timeout = KBC_TIMEOUT_IN_MS;
 	     timeout && (inb(KBD_STATUS) & KBD_IBF); timeout--)
 		mdelay(1);
@@ -80,6 +81,7 @@ static int kbc_input_buffer_empty(void)
 static int kbc_output_buffer_full(void)
 {
 	u32 timeout;
+
 	for (timeout = KBC_TIMEOUT_IN_MS;
 	     timeout && ((inb(KBD_STATUS) & KBD_OBF) == 0); timeout--)
 		mdelay(1);
@@ -93,6 +95,7 @@ static int kbc_output_buffer_full(void)
 static int kbc_cleanup_buffers(void)
 {
 	u32 timeout;
+
 	for (timeout = KBC_TIMEOUT_IN_MS;
 	     timeout && (inb(KBD_STATUS) & (KBD_OBF | KBD_IBF)); timeout--) {
 		mdelay(1);
@@ -221,8 +224,10 @@ static u8 send_keyboard(u8 command)
 		 * reset */
 		if (command == 0xFF) {
 			u8 retries;
+
 			for (retries = 9; retries && !kbc_output_buffer_full();
-			     retries--) ;
+			     retries--)
+				;
 		}
 		if (!kbc_output_buffer_full()) {
 			printk(BIOS_ERR,
@@ -288,7 +293,8 @@ uint8_t pc_keyboard_init(uint8_t probe_aux)
 	}
 
 	/* the reset command takes some time, so wait a little longer */
-	for (retries = 9; retries && !kbc_output_buffer_full(); retries--) ;
+	for (retries = 9; retries && !kbc_output_buffer_full(); retries--)
+		;
 
 	if (!kbc_output_buffer_full()) {
 		printk(BIOS_ERR, "Timeout waiting for keyboard after reset.\n");
diff --git a/src/drivers/pc80/ps2_controller.asl b/src/drivers/pc80/pc/ps2_controller.asl
index a4984cfdb9..a4984cfdb9 100644
--- a/src/drivers/pc80/ps2_controller.asl
+++ b/src/drivers/pc80/pc/ps2_controller.asl
diff --git a/src/drivers/pc80/spkmodem.c b/src/drivers/pc80/pc/spkmodem.c
index fe57e620bc..df66f6fa62 100644
--- a/src/drivers/pc80/spkmodem.c
+++ b/src/drivers/pc80/pc/spkmodem.c
@@ -43,7 +43,7 @@ enum {
 	PIT_CTRL_SELECT_1 = 0x40,
 	PIT_CTRL_SELECT_2 = 0x80,
 
-	PIT_CTRL_READLOAD_MASK= 0x30,
+	PIT_CTRL_READLOAD_MASK = 0x30,
 	PIT_CTRL_COUNTER_LATCH = 0x00,
 	PIT_CTRL_READLOAD_LSB = 0x10,
 	PIT_CTRL_READLOAD_MSB = 0x20,
@@ -68,28 +68,28 @@ enum {
 
 
 static void
-make_tone (uint16_t freq_count, unsigned int duration)
+make_tone(uint16_t freq_count, unsigned int duration)
 {
-	outb (PIT_CTRL_SELECT_2
+	outb(PIT_CTRL_SELECT_2
 		   | PIT_CTRL_READLOAD_WORD
 		   | PIT_CTRL_SQUAREWAVE_GEN
 		   | PIT_CTRL_COUNT_BINARY, PIT_CTRL);
 
-	outb (freq_count & 0xff, PIT_COUNTER_2);
+	outb(freq_count & 0xff, PIT_COUNTER_2);
 
-	outb ((freq_count >> 8) & 0xff, PIT_COUNTER_2);
+	outb((freq_count >> 8) & 0xff, PIT_COUNTER_2);
 
-	outb (inb (PIT_SPEAKER_PORT)
+	outb(inb(PIT_SPEAKER_PORT)
 		   | PIT_SPK_TMR2 | PIT_SPK_DATA,
 		   PIT_SPEAKER_PORT);
 
 	for (; duration; duration--) {
 		unsigned short counter, previous_counter = 0xffff;
+
 		while (1) {
-			counter = inb (PIT_COUNTER_2);
-			counter |= ((uint16_t) inb (PIT_COUNTER_2)) << 8;
-			if (counter > previous_counter)
-			{
+			counter = inb(PIT_COUNTER_2);
+			counter |= ((uint16_t)inb(PIT_COUNTER_2)) << 8;
+			if (counter > previous_counter) {
 				previous_counter = counter;
 				break;
 			}
@@ -102,20 +102,22 @@ void spkmodem_tx_byte(unsigned char c)
 {
 	int i;
 
-	make_tone (SPEAKER_PIT_FREQUENCY / 200, 4);
+	make_tone(SPEAKER_PIT_FREQUENCY / 200, 4);
 	for (i = 7; i >= 0; i--) {
 		if ((c >> i) & 1)
-			make_tone (SPEAKER_PIT_FREQUENCY / 2000, 20);
+			make_tone(SPEAKER_PIT_FREQUENCY / 2000, 20);
 		else
-			make_tone (SPEAKER_PIT_FREQUENCY / 4000, 40);
-		make_tone (SPEAKER_PIT_FREQUENCY / 1000, 10);
+			make_tone(SPEAKER_PIT_FREQUENCY / 4000, 40);
+		make_tone(SPEAKER_PIT_FREQUENCY / 1000, 10);
 	}
-	make_tone (SPEAKER_PIT_FREQUENCY / 200, 0);
+	make_tone(SPEAKER_PIT_FREQUENCY / 200, 0);
 }
 
 void spkmodem_init(void)
 {
-	/* Some cards need time to come online.  Output some message to get it started.  */
+	/* Some cards need time to come online.
+	 * Output some message to get it started.
+	 */
 	spkmodem_tx_byte('S');
 	spkmodem_tx_byte('P');
 	spkmodem_tx_byte('K');
diff --git a/src/drivers/pc80/udelay_io.c b/src/drivers/pc80/pc/udelay_io.c
index 1cdc6739c1..3305e4c3a3 100644
--- a/src/drivers/pc80/udelay_io.c
+++ b/src/drivers/pc80/pc/udelay_io.c
@@ -8,6 +8,7 @@ void init_timer(void)
 void udelay(unsigned usecs)
 {
 	int i;
-	for(i = 0; i < usecs; i++)
+
+	for (i = 0; i < usecs; i++)
 		inb(0x80);
 }
diff --git a/src/drivers/pc80/rtc/Kconfig b/src/drivers/pc80/rtc/Kconfig
new file mode 100644
index 0000000000..350863e99a
--- /dev/null
+++ b/src/drivers/pc80/rtc/Kconfig
@@ -0,0 +1,4 @@
+config DRIVERS_MC146818
+	bool
+	default y if ARCH_X86
+	depends on PC80_SYSTEM
diff --git a/src/drivers/pc80/Makefile.inc b/src/drivers/pc80/rtc/Makefile.inc
index f468318dd5..d3b3344938 100644
--- a/src/drivers/pc80/Makefile.inc
+++ b/src/drivers/pc80/rtc/Makefile.inc
@@ -1,20 +1,10 @@
 ifeq ($(CONFIG_ARCH_X86),y)
 
-romstage-$(CONFIG_DRIVERS_MC146818) += mc146818rtc.c
-ramstage-$(CONFIG_DRIVERS_MC146818) += mc146818rtc.c
-ramstage-y += isa-dma.c
-ramstage-y += i8254.c
-ramstage-y += i8259.c
-romstage-$(CONFIG_UDELAY_IO) += udelay_io.c
-ramstage-$(CONFIG_UDELAY_IO) += udelay_io.c
-ramstage-y += keyboard.c
-ramstage-$(CONFIG_SPKMODEM) += spkmodem.c
-
 romstage-$(CONFIG_DRIVERS_MC146818) += mc146818rtc_early.c
+romstage-$(CONFIG_DRIVERS_MC146818) += mc146818rtc.c
 
-romstage-$(CONFIG_SPKMODEM) += spkmodem.c
-
-subdirs-y += tpm vga
+ramstage-$(CONFIG_DRIVERS_MC146818) += mc146818rtc_early.c
+ramstage-$(CONFIG_DRIVERS_MC146818) += mc146818rtc.c
 
 cbfs-files-$(CONFIG_HAVE_CMOS_DEFAULT) += cmos.default
 cmos.default-file = $(CONFIG_CMOS_DEFAULT_FILE):nvramtool
diff --git a/src/drivers/pc80/mc146818rtc.c b/src/drivers/pc80/rtc/mc146818rtc.c
index 6c39f812b9..35dad3256a 100644
--- a/src/drivers/pc80/mc146818rtc.c
+++ b/src/drivers/pc80/rtc/mc146818rtc.c
@@ -38,11 +38,11 @@
 
 #if (defined(__PRE_RAM__) &&	\
 IS_ENABLED(CONFIG_HAVE_ROMSTAGE_NVRAM_CBFS_SPINLOCK))
-	#define LOCK_NVRAM_CBFS_SPINLOCK spin_lock(romstage_nvram_cbfs_lock());
-	#define UNLOCK_NVRAM_CBFS_SPINLOCK spin_unlock(romstage_nvram_cbfs_lock());
+	#define LOCK_NVRAM_CBFS_SPINLOCK() spin_lock(romstage_nvram_cbfs_lock())
+	#define UNLOCK_NVRAM_CBFS_SPINLOCK() spin_unlock(romstage_nvram_cbfs_lock())
 #else
-	#define LOCK_NVRAM_CBFS_SPINLOCK
-	#define UNLOCK_NVRAM_CBFS_SPINLOCK
+	#define LOCK_NVRAM_CBFS_SPINLOCK() { }
+	#define UNLOCK_NVRAM_CBFS_SPINLOCK() { }
 #endif
 
 static void cmos_reset_date(void)
@@ -63,11 +63,12 @@ static void cmos_reset_date(void)
 
 static int cmos_checksum_valid(int range_start, int range_end, int cks_loc)
 {
+	int i;
+	u16 sum, old_sum;
+
 	if (IS_ENABLED(CONFIG_STATIC_OPTION_TABLE))
 		return 1;
 
-	int i;
-	u16 sum, old_sum;
 	sum = 0;
 	for (i = range_start; i <= range_end; i++)
 		sum += cmos_read(i);
@@ -80,6 +81,7 @@ static void cmos_set_checksum(int range_start, int range_end, int cks_loc)
 {
 	int i;
 	u16 sum;
+
 	sum = 0;
 	for (i = range_start; i <= range_end; i++)
 		sum += cmos_read(i);
@@ -155,7 +157,7 @@ void cmos_init(bool invalid)
 	if (IS_ENABLED(CONFIG_USE_OPTION_TABLE)) {
 		/* See if there is a LB CMOS checksum error */
 		checksum_invalid = !cmos_checksum_valid(LB_CKS_RANGE_START,
-				LB_CKS_RANGE_END,LB_CKS_LOC);
+				LB_CKS_RANGE_END, LB_CKS_LOC);
 		if (checksum_invalid)
 			printk(BIOS_DEBUG, "RTC: coreboot checksum invalid\n");
 
@@ -180,7 +182,7 @@ static enum cb_err get_cmos_value(unsigned long bit, unsigned long length,
 				  void *vret)
 {
 	unsigned char *ret;
-	unsigned long byte,byte_bit;
+	unsigned long byte, byte_bit;
 	unsigned long i;
 	unsigned char uchar;
 
@@ -215,7 +217,7 @@ enum cb_err get_option(void *dest, const char *name)
 	if (!IS_ENABLED(CONFIG_USE_OPTION_TABLE))
 		return CB_CMOS_OTABLE_DISABLED;
 
-	LOCK_NVRAM_CBFS_SPINLOCK
+	LOCK_NVRAM_CBFS_SPINLOCK();
 
 	/* Figure out how long name is */
 	namelen = strnlen(name, CMOS_MAX_NAME_LENGTH);
@@ -227,12 +229,12 @@ enum cb_err get_option(void *dest, const char *name)
 		printk(BIOS_ERR, "RTC: cmos_layout.bin could not be found. "
 						"Options are disabled\n");
 
-		UNLOCK_NVRAM_CBFS_SPINLOCK
+		UNLOCK_NVRAM_CBFS_SPINLOCK();
 		return CB_CMOS_LAYOUT_NOT_FOUND;
 	}
-	ce = (struct cmos_entries*)((unsigned char *)ct + ct->header_length);
-	for(; ce->tag == LB_TAG_OPTION;
-		ce = (struct cmos_entries*)((unsigned char *)ce + ce->size)) {
+	ce = (struct cmos_entries *)((unsigned char *)ct + ct->header_length);
+	for (; ce->tag == LB_TAG_OPTION;
+		ce = (struct cmos_entries *)((unsigned char *)ce + ce->size)) {
 		if (memcmp(ce->name, name, namelen) == 0) {
 			found = 1;
 			break;
@@ -240,19 +242,19 @@ enum cb_err get_option(void *dest, const char *name)
 	}
 	if (!found) {
 		printk(BIOS_DEBUG, "WARNING: No CMOS option '%s'.\n", name);
-		UNLOCK_NVRAM_CBFS_SPINLOCK
+		UNLOCK_NVRAM_CBFS_SPINLOCK();
 		return CB_CMOS_OPTION_NOT_FOUND;
 	}
 
 	if (get_cmos_value(ce->bit, ce->length, dest) != CB_SUCCESS) {
-		UNLOCK_NVRAM_CBFS_SPINLOCK
+		UNLOCK_NVRAM_CBFS_SPINLOCK();
 		return CB_CMOS_ACCESS_ERROR;
 	}
 	if (!cmos_checksum_valid(LB_CKS_RANGE_START, LB_CKS_RANGE_END, LB_CKS_LOC)) {
-		UNLOCK_NVRAM_CBFS_SPINLOCK
+		UNLOCK_NVRAM_CBFS_SPINLOCK();
 		return CB_CMOS_CHECKSUM_INVALID;
 	}
-	UNLOCK_NVRAM_CBFS_SPINLOCK
+	UNLOCK_NVRAM_CBFS_SPINLOCK();
 	return CB_SUCCESS;
 }
 
@@ -260,7 +262,7 @@ static enum cb_err set_cmos_value(unsigned long bit, unsigned long length,
 				  void *vret)
 {
 	unsigned char *ret;
-	unsigned long byte,byte_bit;
+	unsigned long byte, byte_bit;
 	unsigned long i;
 	unsigned char uchar, mask;
 	unsigned int chksum_update_needed = 0;
@@ -319,9 +321,9 @@ enum cb_err set_option(const char *name, void *value)
 				 "Options are disabled\n");
 		return CB_CMOS_LAYOUT_NOT_FOUND;
 	}
-	ce = (struct cmos_entries*)((unsigned char *)ct + ct->header_length);
-	for(; ce->tag == LB_TAG_OPTION;
-		ce = (struct cmos_entries*)((unsigned char *)ce + ce->size)) {
+	ce = (struct cmos_entries *)((unsigned char *)ct + ct->header_length);
+	for (; ce->tag == LB_TAG_OPTION;
+		ce = (struct cmos_entries *)((unsigned char *)ce + ce->size)) {
 		if (memcmp(ce->name, name, namelen) == 0) {
 			found = 1;
 			break;
@@ -338,11 +340,11 @@ enum cb_err set_option(const char *name, void *value)
 		/* make sure the string is null terminated */
 		if (set_cmos_value(ce->bit + ce->length - 8, 8, &(u8[]){0})
 		    != CB_SUCCESS)
-			return (CB_CMOS_ACCESS_ERROR);
+			return CB_CMOS_ACCESS_ERROR;
 	}
 
 	if (set_cmos_value(ce->bit, length, value) != CB_SUCCESS)
-		return (CB_CMOS_ACCESS_ERROR);
+		return CB_CMOS_ACCESS_ERROR;
 
 	return CB_SUCCESS;
 }
@@ -352,7 +354,7 @@ enum cb_err set_option(const char *name, void *value)
  * hurts some OSes. Even if we don't set USE_OPTION_TABLE, we need
  * to make sure the date is valid.
  */
-void cmos_check_update_date()
+void cmos_check_update_date(void)
 {
 	u8 year, century;
 
@@ -369,7 +371,8 @@ void cmos_check_update_date()
 		cmos_reset_date();
 }
 
-int rtc_set(const struct rtc_time *time){
+int rtc_set(const struct rtc_time *time)
+{
 	cmos_write(bin2bcd(time->sec), RTC_CLK_SECOND);
 	cmos_write(bin2bcd(time->min), RTC_CLK_MINUTE);
 	cmos_write(bin2bcd(time->hour), RTC_CLK_HOUR);
diff --git a/src/drivers/pc80/mc146818rtc_early.c b/src/drivers/pc80/rtc/mc146818rtc_early.c
index 3ff5d4fb3e..8bebc4229d 100644
--- a/src/drivers/pc80/mc146818rtc_early.c
+++ b/src/drivers/pc80/rtc/mc146818rtc_early.c
@@ -22,11 +22,11 @@ static int cmos_chksum_valid(void)
 #if CONFIG_USE_OPTION_TABLE
 	unsigned char addr;
 	u16 sum, old_sum;
+
 	sum = 0;
 	/* Compute the cmos checksum */
-	for(addr = LB_CKS_RANGE_START; addr <= LB_CKS_RANGE_END; addr++) {
+	for (addr = LB_CKS_RANGE_START; addr <= LB_CKS_RANGE_END; addr++)
 		sum += cmos_read(addr);
-	}
 
 	/* Read the stored checksum */
 	old_sum = cmos_read(LB_CKS_LOC) << 8;
@@ -95,6 +95,7 @@ unsigned read_option_lowlevel(unsigned start, unsigned size, unsigned def)
 {
 #if CONFIG_USE_OPTION_TABLE
 	unsigned byte;
+
 	byte = cmos_read(start/8);
 	return (byte >> (start & 7U)) & ((1U << size) - 1U);
 #else
diff --git a/src/drivers/pc80/tpm/Makefile.inc b/src/drivers/pc80/tpm/Makefile.inc
index 697842fa03..0068ff19a6 100644
--- a/src/drivers/pc80/tpm/Makefile.inc
+++ b/src/drivers/pc80/tpm/Makefile.inc
@@ -1,4 +1,8 @@
+ifeq ($(CONFIG_ARCH_X86),y)
+
 verstage-$(CONFIG_LPC_TPM) += tpm.c
 romstage-$(CONFIG_LPC_TPM) += tpm.c
 ramstage-$(CONFIG_LPC_TPM) += tpm.c
 romstage-$(CONFIG_LPC_TPM) += romstage.c
+
+endif
diff --git a/src/drivers/pc80/vga/Makefile.inc b/src/drivers/pc80/vga/Makefile.inc
index d4b726a388..3e31de1ddf 100644
--- a/src/drivers/pc80/vga/Makefile.inc
+++ b/src/drivers/pc80/vga/Makefile.inc
@@ -1,4 +1,8 @@
+ifeq ($(CONFIG_ARCH_X86),y)
+
 ramstage-$(CONFIG_VGA) += vga_io.c
 ramstage-$(CONFIG_VGA) += vga_palette.c
 ramstage-$(CONFIG_VGA) += vga_font_8x16.c
 ramstage-$(CONFIG_VGA) += vga.c
+
+endif