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-rw-r--r--src/mainboard/apple/macbook21/romstage.c200
-rw-r--r--src/mainboard/apple/macbookair4_2/gnvs.c2
2 files changed, 103 insertions, 99 deletions
diff --git a/src/mainboard/apple/macbook21/romstage.c b/src/mainboard/apple/macbook21/romstage.c
index 695f1cd291..391b09f6b7 100644
--- a/src/mainboard/apple/macbook21/romstage.c
+++ b/src/mainboard/apple/macbook21/romstage.c
@@ -15,7 +15,7 @@
* GNU General Public License for more details.
*/
-// __PRE_RAM__ means: use "unsigned" for device, not a struct.
+/* __PRE_RAM__ means: use "unsigned" for device, not a struct. */
#include <stdint.h>
#include <string.h>
@@ -89,110 +89,116 @@ void setup_ich7_gpios(void)
static void ich7_enable_lpc(void)
{
- // Enable Serial IRQ
+ /* Enable Serial IRQ */
pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
- // I/O Decode Ranges
- // X60: 0x0210 == 00000010 00010000
- // Macbook21: 0x0010 == 00000000 00010000
- // Bit 9:8 LPT Decode Range. This field determines which range to
- // decode for the LPT Port.
- // 00 = 378h - 37Fh and 778h - 77Fh
- // 10 = 3BCh - 3BEh and 7BCh - 7BEh
+ /* I/O Decode Ranges
+ * X60: 0x0210 == 00000010 00010000
+ * Macbook21: 0x0010 == 00000000 00010000
+ * Bit 9:8 LPT Decode Range. This field determines which range to
+ * decode for the LPT Port.
+ * 00 = 378h - 37Fh and 778h - 77Fh
+ * 10 = 3BCh - 3BEh and 7BCh - 7BEh
+ */
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
- // LPC_EN--LPC I/F Enables Register
- // X60: 0x1f0d == 00011111 00001101
- // Macbook21: 0x3807 == 00111000 00000111
- // Bit 13 CNF2_LPC_EN -- R/W. Microcontroller Enable # 2.
- // 0 = Disable.
- // 1 = Enables the decoding of the I/O locations 4Eh and 4Fh
- // to the LPC interface. This range is used for a
- // microcontroller.
- // Bit 12 CNF1_LPC_EN -- R/W. Super I/O Enable.
- // 0 = Disable.
- // 1 = Enables the decoding of the I/O locations 2Eh and 2Fh
- // to the LPC interface. This range is used for
- // Super I/O devices.
- // Bit 11 MC_LPC_EN -- R/W. Microcontroller Enable # 1.
- // 0 = Disable.
- // 1 = Enables the decoding of the I/O locations 62h and 66h
- // to the LPC interface. This range is used for a
- // microcontroller.
- // Bit 10 KBC_LPC_EN -- R/W. Keyboard Enable.
- // 0 = Disable.
- // 1 = Enables the decoding of the I/O locations 60h and 64h
- // to the LPC interface. This range is used for a
- // microcontroller.
- // Bit 9 GAMEH_LPC_EN -- R/W. High Gameport Enable
- // 0 = Disable.
- // 1 = Enables the decoding of the I/O locations 208h to 20Fh
- // to the LPC interface. This range is used for a gameport.
- // Bit 8 GAMEL_LPC_EN -- R/W. Low Gameport Enable
- // 0 = Disable.
- // 1 = Enables the decoding of the I/O locations 200h to 207h
- // to the LPC interface. This range is used for a gameport.
- // Bit 3 FDD_LPC_EN -- R/W. Floppy Drive Enable
- // 0 = Disable.
- // 1 = Enables the decoding of the FDD range to the LPC
- // interface. This range is selected in the LPC_FDD/LPT
- // Decode Range Register (D31:F0:80h, bit 12).
- // Bit 2 LPT_LPC_EN -- R/W. Parallel Port Enable
- // 0 = Disable.
- // 1 = Enables the decoding of the LPT range to the LPC
- // interface. This range is selected in the LPC_FDD/LPT
- // Decode Range Register (D31:F0:80h, bit 9:8).
- // Bit 1 COMB_LPC_EN -- R/W. Com Port B Enable
- // 0 = Disable.
- // 1 = Enables the decoding of the COMB range to the LPC
- // interface. This range is selected in the LPC_COM Decode
- // Range Register (D31:F0:80h, bits 6:4).
- // Bit 0 COMA_LPC_EN -- R/W. Com Port A Enable
- // 0 = Disable.
- // 1 = Enables the decoding of the COMA range to the LPC
- // interface. This range is selected in the LPC_COM Decode
- // Range Register (D31:F0:80h, bits 3:2).
+ /* LPC_EN--LPC I/F Enables Register
+ * X60: 0x1f0d == 00011111 00001101
+ * Macbook21: 0x3807 == 00111000 00000111
+ * Bit 13 CNF2_LPC_EN -- R/W. Microcontroller Enable # 2.
+ * 0 = Disable.
+ * 1 = Enables the decoding of the I/O locations 4Eh and 4Fh
+ * to the LPC interface. This range is used for a
+ * microcontroller.
+ * Bit 12 CNF1_LPC_EN -- R/W. Super I/O Enable.
+ * 0 = Disable.
+ * 1 = Enables the decoding of the I/O locations 2Eh and 2Fh
+ * to the LPC interface. This range is used for
+ * Super I/O devices.
+ * Bit 11 MC_LPC_EN -- R/W. Microcontroller Enable # 1.
+ * 0 = Disable.
+ * 1 = Enables the decoding of the I/O locations 62h and 66h
+ * to the LPC interface. This range is used for a
+ * microcontroller.
+ * Bit 10 KBC_LPC_EN -- R/W. Keyboard Enable.
+ * 0 = Disable.
+ * 1 = Enables the decoding of the I/O locations 60h and 64h
+ * to the LPC interface. This range is used for a
+ * microcontroller.
+ * Bit 9 GAMEH_LPC_EN -- R/W. High Gameport Enable
+ * 0 = Disable.
+ * 1 = Enables the decoding of the I/O locations 208h to 20Fh
+ * to the LPC interface. This range is used for a gameport.
+ * Bit 8 GAMEL_LPC_EN -- R/W. Low Gameport Enable
+ * 0 = Disable.
+ * 1 = Enables the decoding of the I/O locations 200h to 207h
+ * to the LPC interface. This range is used for a gameport.
+ * Bit 3 FDD_LPC_EN -- R/W. Floppy Drive Enable
+ * 0 = Disable.
+ * 1 = Enables the decoding of the FDD range to the LPC
+ * interface. This range is selected in the LPC_FDD/LPT
+ * Decode Range Register (D31:F0:80h, bit 12).
+ * Bit 2 LPT_LPC_EN -- R/W. Parallel Port Enable
+ * 0 = Disable.
+ * 1 = Enables the decoding of the LPT range to the LPC
+ * interface. This range is selected in the LPC_FDD/LPT
+ * Decode Range Register (D31:F0:80h, bit 9:8).
+ * Bit 1 COMB_LPC_EN -- R/W. Com Port B Enable
+ * 0 = Disable.
+ * 1 = Enables the decoding of the COMB range to the LPC
+ * interface. This range is selected in the LPC_COM Decode
+ * Range Register (D31:F0:80h, bits 6:4).
+ * Bit 0 COMA_LPC_EN -- R/W. Com Port A Enable
+ * 0 = Disable.
+ * 1 = Enables the decoding of the COMA range to the LPC
+ * interface. This range is selected in the LPC_COM Decode
+ * Range Register (D31:F0:80h, bits 3:2).
+ */
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x3807);
- /* GEN1_DEC, LPC Interface Generic Decode Range 1 */
- // X60: 0x1601 0x007c == 00000000 01111100 00010110 00000001
- // Macbook21: 0x0681 0x000c == 00000000 00001100 00000110 10000001
- // Bit 31:24 Reserved.
- // Bit 23:18 Generic I/O Decode Range Address[7:2] Mask: A `1' in any
- // bit position indicates that any value in the corresponding
- // address bit in a received cycle will be treated as a
- // match. The corresponding bit in the Address field, below,
- // is ignored. The mask is only provided for the lower 6 bits
- // of the DWord address, allowing for decoding blocks up to
- // 256 bytes in size.
- // Bit 17:16 Reserved.
- // Bit 15:2 Generic I/O Decode Range 1 Base Address (GEN1_BASE). This
- // address is aligned on a 128-byte boundary, and must have
- // address lines 31:16 as 0. NOTE: The Intel ICH7 does not
- // provide decode down to the word or byte level.
- // Bit 1 Reserved.
- // Bit 0 Generic Decode Range 1 Enable (GEN1_EN) -- R/W.
- // 0 = Disable.
- // 1 = Enable the GEN1 I/O range to be forwarded to the LPC
- // I/F
+ /* GEN1_DEC, LPC Interface Generic Decode Range 1
+ * X60: 0x1601 0x007c == 00000000 01111100 00010110 00000001
+ * Macbook21: 0x0681 0x000c == 00000000 00001100 00000110 10000001
+ * Bit 31:24 Reserved.
+ * Bit 23:18 Generic I/O Decode Range Address[7:2] Mask: A `1' in any
+ * bit position indicates that any value in the corresponding
+ * address bit in a received cycle will be treated as a
+ * match. The corresponding bit in the Address field, below,
+ * is ignored. The mask is only provided for the lower 6 bits
+ * of the DWord address, allowing for decoding blocks up to
+ * 256 bytes in size.
+ * Bit 17:16 Reserved.
+ * Bit 15:2 Generic I/O Decode Range 1 Base Address (GEN1_BASE). This
+ * address is aligned on a 128-byte boundary, and must have
+ * address lines 31:16 as 0. NOTE: The Intel ICH7 does not
+ * provide decode down to the word or byte level.
+ * Bit 1 Reserved.
+ * Bit 0 Generic Decode Range 1 Enable (GEN1_EN) -- R/W.
+ * 0 = Disable.
+ * 1 = Enable the GEN1 I/O range to be forwarded to the LPC
+ * I/F
+ */
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x84, 0x0681);
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x86, 0x000c);
- /* GEN2_DEC, LPC Interface Generic Decode Range 2 */
- // X60: 0x15e1 0x000c == 00000000 00001100 00010101 11100001
- // Macbook21: 0x1641 0x000c == 00000000 00001100 00010110 01000001
+ /* GEN2_DEC, LPC Interface Generic Decode Range 2
+ * X60: 0x15e1 0x000c == 00000000 00001100 00010101 11100001
+ * Macbook21: 0x1641 0x000c == 00000000 00001100 00010110 01000001
+ */
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x88, 0x1641);
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x8a, 0x000c);
- /* GEN3_DEC, LPC Interface Generic Decode Range 3 */
- // X60: 0x1681 0x001c == 00000000 00011100 00010110 10000001
- // Macbook21: 0x0000 0x0000
- pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x8c, 0x0000); // obsolete, because it writes zeros?
+ /* GEN3_DEC, LPC Interface Generic Decode Range 3
+ * X60: 0x1681 0x001c == 00000000 00011100 00010110 10000001
+ * Macbook21: 0x0000 0x0000
+ */
+ pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x8c, 0x0000); /* obsolete, because it writes zeros? */
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x8e, 0x0000);
- /* GEN4_DEC, LPC Interface Generic Decode Range 4 */
- // X60: 0x0000 0x0000
- // Macbook21: 0x0301 0x001c == 00000000 00011100 00000011 00000001
+ /* GEN4_DEC, LPC Interface Generic Decode Range 4
+ * X60: 0x0000 0x0000
+ * Macbook21: 0x0301 0x001c == 00000000 00011100 00000011 00000001
+ */
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x90, 0x0301);
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x92, 0x001c);
}
@@ -225,11 +231,9 @@ static void rcba_config(void)
/* Disable unused devices */
RCBA32(0x3418) = FD_PCIE6 | FD_PCIE5 | FD_PCIE4 | FD_PCIE3 | FD_INTLAN | FD_ACMOD | FD_ACAUD;
- RCBA32(0x3418) |= (1 << 0); // Required.
+ RCBA32(0x3418) |= (1 << 0); /* Required. */
/* Set up I/O Trap #0 for 0xfe00 (SMIC) */
- // RCBA32(0x1e84) = 0x00020001;
- // RCBA32(0x1e80) = 0x0000fe01;
/* Set up I/O Trap #3 for 0x800-0x80c (Trap) */
RCBA32(0x1e9c) = 0x000200f0;
@@ -241,15 +245,15 @@ static void early_ich7_init(void)
uint8_t reg8;
uint32_t reg32;
- // program secondary mlt XXX byte?
+ /* program secondary mlt XXX byte? */
pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
- // reset rtc power status
+ /* reset rtc power status */
reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
reg8 &= ~(1 << 2);
pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
- // usb transient disconnect
+ /* usb transient disconnect */
reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
reg8 |= (3 << 0);
pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
@@ -283,7 +287,7 @@ static void early_ich7_init(void)
RCBA32(0x3e0e) |= (1 << 7);
RCBA32(0x3e4e) |= (1 << 7);
- // next step only on ich7m b0 and later:
+ /* next step only on ich7m b0 and later: */
reg32 = RCBA32(0x2034);
reg32 &= ~(0x0f << 16);
reg32 |= (5 << 16);
diff --git a/src/mainboard/apple/macbookair4_2/gnvs.c b/src/mainboard/apple/macbookair4_2/gnvs.c
index 06f47cdf5b..def9e5fd74 100644
--- a/src/mainboard/apple/macbookair4_2/gnvs.c
+++ b/src/mainboard/apple/macbookair4_2/gnvs.c
@@ -23,7 +23,7 @@ void acpi_create_gnvs(global_nvs_t *gnvs)
gnvs->s5u0 = 0;
gnvs->s5u1 = 0;
- // the lid is open by default.
+ /* the lid is open by default. */
gnvs->lids = 1;
gnvs->tcrt = 100;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 01:14:46 +0000