summaryrefslogtreecommitdiff
path: root/board/amcc
diff options
context:
space:
mode:
Diffstat (limited to 'board/amcc')
-rw-r--r--board/amcc/redwood/redwood.c318
1 files changed, 141 insertions, 177 deletions
diff --git a/board/amcc/redwood/redwood.c b/board/amcc/redwood/redwood.c
index 2c49a23..37a0c31 100644
--- a/board/amcc/redwood/redwood.c
+++ b/board/amcc/redwood/redwood.c
@@ -41,9 +41,9 @@ static int bootdevice_selected(void);
static void early_reinit_EBC(int);
static void early_init_UIC(void);
-/*----------------------------------------------------------------------------+
-| Define Boot devices
-+----------------------------------------------------------------------------*/
+/*
+ * Define Boot devices
+ */
#define BOOT_FROM_8BIT_SRAM 0x00
#define BOOT_FROM_16BIT_SRAM 0x01
#define BOOT_FROM_32BIT_SRAM 0x02
@@ -51,11 +51,11 @@ static void early_init_UIC(void);
#define BOOT_FROM_16BIT_NOR 0x04
#define BOOT_DEVICE_UNKNOWN 0xff
-/*----------------------------------------------------------------------------+
-| EBC Devices Characteristics
-| Peripheral Bank Access Parameters - EBC_BxAP
-| Peripheral Bank Configuration Register - EBC_BxCR
-+----------------------------------------------------------------------------*/
+/*
+ * EBC Devices Characteristics
+ * Peripheral Bank Access Parameters - EBC_BxAP
+ * Peripheral Bank Configuration Register - EBC_BxCR
+ */
/*
* 8 bit width SRAM
@@ -64,19 +64,14 @@ static void early_init_UIC(void);
* B0CR : 0xff098000 - BAS = ff0 - 100 11 00 0000000000000
* B2CR : 0xe7098000 - BAS = e70 - 100 11 00 0000000000000
*/
-#define EBC_BXAP_8BIT_SRAM EBC_BXAP_BME_DISABLED | \
- EBC_BXAP_TWT_ENCODE(7) | \
- EBC_BXAP_BCE_DISABLE | \
- EBC_BXAP_BCT_2TRANS | \
- EBC_BXAP_CSN_ENCODE(0) | \
- EBC_BXAP_OEN_ENCODE(0) | \
- EBC_BXAP_WBN_ENCODE(0) | \
- EBC_BXAP_WBF_ENCODE(0) | \
- EBC_BXAP_TH_ENCODE(0) | \
- EBC_BXAP_RE_DISABLED | \
- EBC_BXAP_SOR_DELAYED | \
- EBC_BXAP_BEM_WRITEONLY | \
- EBC_BXAP_PEN_DISABLED
+#define EBC_BXAP_8BIT_SRAM \
+ EBC_BXAP_BME_DISABLED | EBC_BXAP_TWT_ENCODE(7) | \
+ EBC_BXAP_BCE_DISABLE | EBC_BXAP_BCT_2TRANS | \
+ EBC_BXAP_CSN_ENCODE(0) | EBC_BXAP_OEN_ENCODE(0) | \
+ EBC_BXAP_WBN_ENCODE(0) | EBC_BXAP_WBF_ENCODE(0) | \
+ EBC_BXAP_TH_ENCODE(0) | EBC_BXAP_RE_DISABLED | \
+ EBC_BXAP_SOR_DELAYED | EBC_BXAP_BEM_WRITEONLY | \
+ EBC_BXAP_PEN_DISABLED
#define EBC_BXAP_16BIT_SRAM EBC_BXAP_8BIT_SRAM
#define EBC_BXAP_32BIT_SRAM EBC_BXAP_8BIT_SRAM
@@ -88,19 +83,14 @@ static void early_init_UIC(void);
* B0CR : 0xff09a000 - BAS = ff0 - 100 11 01 0000000000000
* B2CR : 0xe709a000 - BAS = e70 - 100 11 01 0000000000000
*/
-#define EBC_BXAP_NAND EBC_BXAP_BME_DISABLED | \
- EBC_BXAP_TWT_ENCODE(7) | \
- EBC_BXAP_BCE_DISABLE | \
- EBC_BXAP_BCT_2TRANS | \
- EBC_BXAP_CSN_ENCODE(0) | \
- EBC_BXAP_OEN_ENCODE(0) | \
- EBC_BXAP_WBN_ENCODE(0) | \
- EBC_BXAP_WBF_ENCODE(0) | \
- EBC_BXAP_TH_ENCODE(0) | \
- EBC_BXAP_RE_DISABLED | \
- EBC_BXAP_SOR_DELAYED | \
- EBC_BXAP_BEM_WRITEONLY | \
- EBC_BXAP_PEN_DISABLED
+#define EBC_BXAP_NAND \
+ EBC_BXAP_BME_DISABLED | EBC_BXAP_TWT_ENCODE(7) | \
+ EBC_BXAP_BCE_DISABLE | EBC_BXAP_BCT_2TRANS | \
+ EBC_BXAP_CSN_ENCODE(0) | EBC_BXAP_OEN_ENCODE(0) | \
+ EBC_BXAP_WBN_ENCODE(0) | EBC_BXAP_WBF_ENCODE(0) | \
+ EBC_BXAP_TH_ENCODE(0) | EBC_BXAP_RE_DISABLED | \
+ EBC_BXAP_SOR_DELAYED | EBC_BXAP_BEM_WRITEONLY | \
+ EBC_BXAP_PEN_DISABLED
/*
* NOR flash
@@ -109,19 +99,14 @@ static void early_init_UIC(void);
* B0CR : 0xff09a000 - BAS = ff0 - 100 11 01 0000000000000
* B2CR : 0xe709a000 - BAS = e70 - 100 11 01 0000000000000
*/
-#define EBC_BXAP_NOR EBC_BXAP_BME_DISABLED | \
- EBC_BXAP_TWT_ENCODE(7) | \
- EBC_BXAP_BCE_DISABLE | \
- EBC_BXAP_BCT_2TRANS | \
- EBC_BXAP_CSN_ENCODE(0) | \
- EBC_BXAP_OEN_ENCODE(0) | \
- EBC_BXAP_WBN_ENCODE(0) | \
- EBC_BXAP_WBF_ENCODE(0) | \
- EBC_BXAP_TH_ENCODE(0) | \
- EBC_BXAP_RE_DISABLED | \
- EBC_BXAP_SOR_DELAYED | \
- EBC_BXAP_BEM_WRITEONLY | \
- EBC_BXAP_PEN_DISABLED
+#define EBC_BXAP_NOR \
+ EBC_BXAP_BME_DISABLED | EBC_BXAP_TWT_ENCODE(7) | \
+ EBC_BXAP_BCE_DISABLE | EBC_BXAP_BCT_2TRANS | \
+ EBC_BXAP_CSN_ENCODE(0) | EBC_BXAP_OEN_ENCODE(0) | \
+ EBC_BXAP_WBN_ENCODE(0) | EBC_BXAP_WBF_ENCODE(0) | \
+ EBC_BXAP_TH_ENCODE(0) | EBC_BXAP_RE_DISABLED | \
+ EBC_BXAP_SOR_DELAYED | EBC_BXAP_BEM_WRITEONLY | \
+ EBC_BXAP_PEN_DISABLED
/*
* FPGA
@@ -129,74 +114,58 @@ static void early_init_UIC(void);
* B1AP = 0x05895240 - 0 00001011 0 00 10 01 01 01 001 0 0 1 0 00000
* B1CR = 0xe201a000 - BAS = e20 - 000 11 01 00000000000000
*/
-#define EBC_BXAP_FPGA EBC_BXAP_BME_DISABLED | \
- EBC_BXAP_TWT_ENCODE(11) | \
- EBC_BXAP_BCE_DISABLE | \
- EBC_BXAP_BCT_2TRANS | \
- EBC_BXAP_CSN_ENCODE(10) | \
- EBC_BXAP_OEN_ENCODE(1) | \
- EBC_BXAP_WBN_ENCODE(1) | \
- EBC_BXAP_WBF_ENCODE(1) | \
- EBC_BXAP_TH_ENCODE(1) | \
- EBC_BXAP_RE_DISABLED | \
- EBC_BXAP_SOR_DELAYED | \
- EBC_BXAP_BEM_RW | \
- EBC_BXAP_PEN_DISABLED
-
-#define EBC_BXCR_8BIT_SRAM_CS0 EBC_BXCR_BAS_ENCODE(0xFFE00000) | \
- EBC_BXCR_BS_1MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_8BIT
-
-#define EBC_BXCR_32BIT_SRAM_CS0 EBC_BXCR_BAS_ENCODE(0xFFC00000) | \
- EBC_BXCR_BS_1MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_32BIT
-
-#define EBC_BXCR_NAND_CS0 EBC_BXCR_BAS_ENCODE(0xFF000000) | \
- EBC_BXCR_BS_16MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_8BIT
-
-#define EBC_BXCR_16BIT_SRAM_CS0 EBC_BXCR_BAS_ENCODE(0xFFE00000) | \
- EBC_BXCR_BS_2MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_16BIT
-
-#define EBC_BXCR_NOR_CS0 EBC_BXCR_BAS_ENCODE(0xFF000000) | \
- EBC_BXCR_BS_16MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_16BIT
-
-#define EBC_BXCR_NOR_CS1 EBC_BXCR_BAS_ENCODE(0xE0000000) | \
- EBC_BXCR_BS_128MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_16BIT
-
-#define EBC_BXCR_NAND_CS1 EBC_BXCR_BAS_ENCODE(0xE0000000) | \
- EBC_BXCR_BS_128MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_8BIT
-
-#define EBC_BXCR_NAND_CS2 EBC_BXCR_BAS_ENCODE(0xC0000000) | \
- EBC_BXCR_BS_128MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_8BIT
-
-#define EBC_BXCR_SRAM_CS2 EBC_BXCR_BAS_ENCODE(0xC0000000) | \
- EBC_BXCR_BS_4MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_32BIT
-
-#define EBC_BXCR_LARGE_FLASH_CS2 EBC_BXCR_BAS_ENCODE(0xE7000000) | \
- EBC_BXCR_BS_16MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_16BIT
-
-#define EBC_BXCR_FPGA_CS3 EBC_BXCR_BAS_ENCODE(0xe2000000) | \
- EBC_BXCR_BS_1MB | \
- EBC_BXCR_BU_RW | \
- EBC_BXCR_BW_16BIT
+#define EBC_BXAP_FPGA \
+ EBC_BXAP_BME_DISABLED | EBC_BXAP_TWT_ENCODE(11) | \
+ EBC_BXAP_BCE_DISABLE | EBC_BXAP_BCT_2TRANS | \
+ EBC_BXAP_CSN_ENCODE(10) | EBC_BXAP_OEN_ENCODE(1) | \
+ EBC_BXAP_WBN_ENCODE(1) | EBC_BXAP_WBF_ENCODE(1) | \
+ EBC_BXAP_TH_ENCODE(1) | EBC_BXAP_RE_DISABLED | \
+ EBC_BXAP_SOR_DELAYED | EBC_BXAP_BEM_RW | \
+ EBC_BXAP_PEN_DISABLED
+
+#define EBC_BXCR_8BIT_SRAM_CS0 \
+ EBC_BXCR_BAS_ENCODE(0xFFE00000) | EBC_BXCR_BS_1MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_8BIT
+
+#define EBC_BXCR_32BIT_SRAM_CS0 \
+ EBC_BXCR_BAS_ENCODE(0xFFC00000) | EBC_BXCR_BS_1MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_32BIT
+
+#define EBC_BXCR_NAND_CS0 \
+ EBC_BXCR_BAS_ENCODE(0xFF000000) | EBC_BXCR_BS_16MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_8BIT
+
+#define EBC_BXCR_16BIT_SRAM_CS0 \
+ EBC_BXCR_BAS_ENCODE(0xFFE00000) | EBC_BXCR_BS_2MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_16BIT
+
+#define EBC_BXCR_NOR_CS0 \
+ EBC_BXCR_BAS_ENCODE(0xFF000000) | EBC_BXCR_BS_16MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_16BIT
+
+#define EBC_BXCR_NOR_CS1 \
+ EBC_BXCR_BAS_ENCODE(0xE0000000) | EBC_BXCR_BS_128MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_16BIT
+
+#define EBC_BXCR_NAND_CS1 \
+ EBC_BXCR_BAS_ENCODE(0xE0000000) | EBC_BXCR_BS_128MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_8BIT
+
+#define EBC_BXCR_NAND_CS2 \
+ EBC_BXCR_BAS_ENCODE(0xC0000000) | EBC_BXCR_BS_128MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_8BIT
+
+#define EBC_BXCR_SRAM_CS2 \
+ EBC_BXCR_BAS_ENCODE(0xC0000000) | EBC_BXCR_BS_4MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_32BIT
+
+#define EBC_BXCR_LARGE_FLASH_CS2 \
+ EBC_BXCR_BAS_ENCODE(0xE7000000) | EBC_BXCR_BS_16MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_16BIT
+
+#define EBC_BXCR_FPGA_CS3 \
+ EBC_BXCR_BAS_ENCODE(0xE2000000) | EBC_BXCR_BS_1MB | \
+ EBC_BXCR_BU_RW | EBC_BXCR_BW_16BIT
/*****************************************************************************
* UBOOT initiated board specific function calls
@@ -245,13 +214,12 @@ int checkboard(void)
static void early_init_EBC(void)
{
- /*-------------------------------------------------------------------+
- | Initialize EBC CONFIG -
- | Keep the Default value, but the bit PDT which has to be set to 1 ?TBC
- | default value :
- | 0x07C00000 - 0 0 000 1 1 1 1 1 0000 0 00000 000000000000
- |
- +-------------------------------------------------------------------*/
+ /*
+ * Initialize EBC CONFIG -
+ * Keep the Default value, but the bit PDT which has to be set to 1 ?TBC
+ * default value :
+ * 0x07C00000 - 0 0 000 1 1 1 1 1 0000 0 00000 000000000000
+ */
mtebc(xbcfg, EBC_CFG_LE_UNLOCK |
EBC_CFG_PTD_ENABLE |
EBC_CFG_RTC_16PERCLK |
@@ -261,16 +229,14 @@ static void early_init_EBC(void)
EBC_CFG_OEO_PREVIOUS |
EBC_CFG_EMC_DEFAULT | EBC_CFG_PME_DISABLE | EBC_CFG_PR_16);
- /*-------------------------------------------------------------------+
- |
- | PART 1 : Initialize EBC Bank 3
- | ==============================
- | Bank1 is always associated to the EPLD.
- | It has to be initialized prior to other banks settings computation
- | since some board registers values may be needed to determine the
- | boot type
- |
- +-------------------------------------------------------------------*/
+ /*
+ * PART 1 : Initialize EBC Bank 3
+ * ==============================
+ * Bank1 is always associated to the EPLD.
+ * It has to be initialized prior to other banks settings computation
+ * since some board registers values may be needed to determine the
+ * boot type
+ */
mtebc(pb1ap, EBC_BXAP_FPGA);
mtebc(pb1cr, EBC_BXCR_FPGA_CS3);
@@ -282,24 +248,23 @@ static int bootdevice_selected(void)
unsigned long bootstrap_settings;
int computed_boot_device = BOOT_DEVICE_UNKNOWN;
- /*-------------------------------------------------------------------+
- |
- | Determine which boot device was selected
- | =================================================
- |
- | Read Pin Strap Register in PPC460SX
- | Result can either be :
- | - Boot strap = boot from EBC 8bits => Small Flash
- | - Boot strap = boot from PCI
- | - Boot strap = IIC
- | In case of boot from IIC, read Serial Device Strap Register1
- |
- | Result can either be :
- | - Boot from EBC - EBC Bus Width = 8bits => Small Flash
- | - Boot from EBC - EBC Bus Width = 16bits => Large Flash or SRAM
- | - Boot from PCI
- |
- +-------------------------------------------------------------------*/
+ /*
+ * Determine which boot device was selected
+ * =================================================
+ *
+ * Read Pin Strap Register in PPC460SX
+ * Result can either be :
+ * - Boot strap = boot from EBC 8bits => Small Flash
+ * - Boot strap = boot from PCI
+ * - Boot strap = IIC
+ * In case of boot from IIC, read Serial Device Strap Register1
+ *
+ * Result can either be :
+ * - Boot from EBC - EBC Bus Width = 8bits => Small Flash
+ * - Boot from EBC - EBC Bus Width = 16bits => Large Flash or SRAM
+ * - Boot from PCI
+ */
+
/* Read Pin Strap Register in PPC460SX */
mfsdr(SDR0_PINSTP, sdr0_pinstp);
bootstrap_settings = sdr0_pinstp & SDR0_PSTRP0_BOOTSTRAP_MASK;
@@ -348,26 +313,25 @@ static int bootdevice_selected(void)
static void early_reinit_EBC(int computed_boot_device)
{
- /*-------------------------------------------------------------------+
- |
- | Compute EBC settings depending on selected boot device
- | ====== ======================================================
- |
- | Resulting EBC init will be among following configurations :
- |
- | - Boot from EBC 8bits => boot from Small Flash selected
- | EBC-CS0 = Small Flash
- | EBC-CS2 = Large Flash and SRAM
- |
- | - Boot from EBC 16bits => boot from Large Flash or SRAM
- | EBC-CS0 = Large Flash or SRAM
- | EBC-CS2 = Small Flash
- |
- | - Boot from PCI
- | EBC-CS0 = not initialized to avoid address contention
- | EBC-CS2 = same as boot from Small Flash selected
- |
- +-------------------------------------------------------------------*/
+ /*
+ * Compute EBC settings depending on selected boot device
+ * ======================================================
+ *
+ * Resulting EBC init will be among following configurations :
+ *
+ * - Boot from EBC 8bits => boot from Small Flash selected
+ * EBC-CS0 = Small Flash
+ * EBC-CS2 = Large Flash and SRAM
+ *
+ * - Boot from EBC 16bits => boot from Large Flash or SRAM
+ * EBC-CS0 = Large Flash or SRAM
+ * EBC-CS2 = Small Flash
+ *
+ * - Boot from PCI
+ * EBC-CS0 = not initialized to avoid address contention
+ * EBC-CS2 = same as boot from Small Flash selected
+ */
+
unsigned long ebc0_cs0_bxap_value = 0, ebc0_cs0_bxcr_value = 0;
unsigned long ebc0_cs1_bxap_value = 0, ebc0_cs1_bxcr_value = 0;
unsigned long ebc0_cs2_bxap_value = 0, ebc0_cs2_bxcr_value = 0;
@@ -445,13 +409,13 @@ static void early_reinit_EBC(int computed_boot_device)
static void early_init_UIC(void)
{
- /*--------------------------------------------------------------------+
- | Initialise UIC registers. Clear all interrupts. Disable all
- | interrupts.
- | Set critical interrupt values. Set interrupt polarities. Set
- | interrupt trigger levels. Make bit 0 High priority. Clear all
- | interrupts again.
- +-------------------------------------------------------------------*/
+ /*
+ * Initialise UIC registers. Clear all interrupts. Disable all
+ * interrupts.
+ * Set critical interrupt values. Set interrupt polarities. Set
+ * interrupt trigger levels. Make bit 0 High priority. Clear all
+ * interrupts again.
+ */
mtdcr(uic3sr, 0xffffffff); /* Clear all interrupts */
mtdcr(uic3er, 0x00000000); /* disable all interrupts */
mtdcr(uic3cr, 0x00000000); /* Set Critical / Non Critical
generated by cgit v1.1 at 2024-12-18 04:49:57 +0000