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authorJoel Sherrill <joel.sherrill@OARcorp.com>2008-06-20 14:58:34 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>2008-06-20 14:58:34 +0000
commit6b56ec3327a541aa711116d8bb37e22ede976dd6 (patch)
tree4a2655f3db869a052e17923f76ee3207c7b7f7d6 /c/src/lib/libbsp/m68k/mcf5329/startup/cfinit.c
parent2008-06-19 Matthew Riek <matthew.riek@ibiscomputer.com.au> (diff)
downloadrtems-6b56ec3327a541aa711116d8bb37e22ede976dd6.tar.bz2
2008-06-20 Matthew Riek <matthew.riek@ibiscomputer.com.au>
* ChangeLog, Makefile.am, README, bsp_specs, configure.ac, gdb-init, preinstall.am, clock/clock.c, console/console.c, include/bsp.h, include/bspopts.h.in, include/coverhd.h, include/tm27.h, network/network.c, start/start.S, startup/bspclean.c, startup/bspstart.c, startup/cfinit.c, startup/init5329.c, startup/linkcmds, startup/linkcmdsflash, timer/timer.c: New files.
Diffstat (limited to 'c/src/lib/libbsp/m68k/mcf5329/startup/cfinit.c')
-rw-r--r--c/src/lib/libbsp/m68k/mcf5329/startup/cfinit.c435
1 files changed, 435 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/m68k/mcf5329/startup/cfinit.c b/c/src/lib/libbsp/m68k/mcf5329/startup/cfinit.c
new file mode 100644
index 0000000000..c133bc4bf0
--- /dev/null
+++ b/c/src/lib/libbsp/m68k/mcf5329/startup/cfinit.c
@@ -0,0 +1,435 @@
+
+/*********************************************************************
+* Initialisation Code for ColdFire MCF5329 Processor *
+**********************************************************************
+ Generated by ColdFire Initialisation Utility 2.10.8
+ Mon Jun 16 10:41:41 2008
+
+ MicroAPL Ltd makes no warranties in respect of the suitability
+ of this code for any particular purpose, and accepts
+ no liability for any loss arising out of its use. The person or
+ persons making use of this file must make the final evaluation
+ as to its suitability and correctness for a particular application.
+
+ $Id$
+*/
+
+/* External reference frequency is 16.0000 MHz
+ Internal bus clock frequency = 80.00 MHz
+ Processor core frequency = 240.00 MHz
+*/
+
+#include <bsp.h>
+
+/* eDMA Transfer Control Descriptor definitions */
+#define MCF_EDMA_TCD_W0(channel) (*(vuint32 *)(0xFC045000+((channel)*0x20))) /* Transfer Control Descriptor Word 0 */
+#define MCF_EDMA_TCD_W1(channel) (*(vuint32 *)(0xFC045004+((channel)*0x20))) /* Transfer Control Descriptor Word 1 */
+#define MCF_EDMA_TCD_W2(channel) (*(vuint32 *)(0xFC045008+((channel)*0x20))) /* Transfer Control Descriptor Word 2 */
+#define MCF_EDMA_TCD_W3(channel) (*(vuint32 *)(0xFC04500C+((channel)*0x20))) /* Transfer Control Descriptor Word 3 */
+#define MCF_EDMA_TCD_W4(channel) (*(vuint32 *)(0xFC045010+((channel)*0x20))) /* Transfer Control Descriptor Word 4 */
+#define MCF_EDMA_TCD_W5(channel) (*(vuint32 *)(0xFC045014+((channel)*0x20))) /* Transfer Control Descriptor Word 5 */
+#define MCF_EDMA_TCD_W6(channel) (*(vuint32 *)(0xFC045018+((channel)*0x20))) /* Transfer Control Descriptor Word 6 */
+#define MCF_EDMA_TCD_W7(channel) (*(vuint32 *)(0xFC04501C+((channel)*0x20))) /* Transfer Control Descriptor Word 7 */
+
+/* Function prototypes */
+void init_main(void);
+static void disable_interrupts(void);
+static void disable_watchdog_timer(void);
+static void disable_cache(void);
+extern void init_clock_config(void) __attribute__ ((section(".ram_code")));
+extern void init_chip_selects(void) __attribute__ ((section(".ram_code")));
+static void init_real_time_clock(void);
+static void init_watchdog_timers(void);
+static void init_pin_assignments(void);
+extern void init_sdram_controller(void)
+ __attribute__ ((section(".ram_code")));
+
+/*********************************************************************
+* init_main - Main entry point for initialisation code *
+**********************************************************************/
+void init_main(void)
+{
+ /* Mask all interrupts */
+ init_clock_config();
+
+ /* Disable interrupts, watchdog timer, cache */
+ disable_interrupts();
+ disable_watchdog_timer();
+ disable_cache();
+
+ /* Initialise individual modules */
+ init_chip_selects();
+ init_real_time_clock();
+ init_watchdog_timers();
+ init_pin_assignments();
+
+ /* Initialise SDRAM controller (must be done after pin assignments) */
+ init_sdram_controller();
+}
+
+/*********************************************************************
+* disable_interrupts - Disable all interrupt sources *
+**********************************************************************/
+static void disable_interrupts(void)
+{
+ vuint8 *p;
+ int i;
+
+ /* Set ICR001-ICR063 to 0x0 */
+ p = (vuint8 *) & MCF_INTC0_ICR1;
+ for (i = 1; i <= 63; i++)
+ *p++ = 0x0;
+
+ /* Set ICR100-ICR163 to 0x0 */
+ p = (vuint8 *) & MCF_INTC1_ICR0;
+ for (i = 100; i <= 163; i++)
+ *p++ = 0x0;
+}
+
+/*********************************************************************
+* disable_watchdog_timer - Disable system watchdog timer *
+**********************************************************************/
+static void disable_watchdog_timer(void)
+{
+ /* Disable Core Watchdog Timer */
+ MCF_SCM_CWCR = 0;
+}
+
+/*********************************************************************
+* disable_cache - Disable and invalidate cache *
+**********************************************************************/
+static void disable_cache(void)
+{
+ asm("move.l #0x01000000,%d0");
+ asm("movec %d0,%CACR");
+}
+
+/*********************************************************************
+* init_clock_config - Clock Module *
+**********************************************************************/
+
+void init_clock_config(void)
+{
+ /* Clock module uses normal PLL mode with 16.0000 MHz external reference
+ Bus clock frequency = 80.00 MHz
+ Processor clock frequency = 3 x bus clock = 240.00 MHz
+ Dithering disabled
+ */
+
+ /* Check to see if the SDRAM has already been initialized
+ by a run control tool. If it has, put SDRAM into self-refresh mode before
+ initializing the PLL
+ */
+ if (MCF_SDRAMC_SDCR & MCF_SDRAMC_SDCR_REF)
+ MCF_SDRAMC_SDCR &= ~MCF_SDRAMC_SDCR_CKE;
+
+ /* Temporarily switch to LIMP mode
+ NOTE: Ensure that this code is not executing from SDRAM, since the
+ SDRAM Controller is disabled in LIMP mode
+ */
+ MCF_CCM_CDR = (MCF_CCM_CDR & 0xf0ff) | MCF_CCM_CDR_LPDIV(0x2);
+ MCF_CCM_MISCCR |= MCF_CCM_MISCCR_LIMP;
+
+ /* Configure the PLL settings */
+ MCF_PLL_PODR = MCF_PLL_PODR_CPUDIV(0x2) | MCF_PLL_PODR_BUSDIV(0x6);
+ MCF_PLL_PFDR = MCF_PLL_PFDR_MFD(0x78);
+ MCF_PLL_PLLCR = 0;
+ MCF_PLL_PMDR = 0;
+
+ /* Enable PLL and wait for lock */
+ MCF_CCM_MISCCR &= ~MCF_CCM_MISCCR_LIMP;
+ while ((MCF_CCM_MISCCR & MCF_CCM_MISCCR_PLL_LOCK) == 0) ;
+
+ /* From the Device Errata:
+
+ "After exiting LIMP mode, the value of 0x40000000 should be written
+ to address 0xFC0B8080 before attempting to initialize the SDRAMC
+ or exit the SDRAM from self-refresh mode."
+ */
+ *(vuint32 *) 0xfc0b8080 = 0x40000000;
+
+ /* If we put the SDRAM into self-refresh mode earlier, restore mode now */
+ if (MCF_SDRAMC_SDCR & MCF_SDRAMC_SDCR_REF)
+ MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_CKE;
+}
+
+/*********************************************************************
+* init_chip_selects - Chip Select Module (FlexBus) *
+**********************************************************************/
+void init_chip_selects(void)
+{
+ /* Chip Select 0: 2 MB of Flash at base address $00000000
+ Port size = 16 bits
+ Assert chip select on first rising clock edge after address is asserted
+ Generate internal transfer acknowledge after 7 wait states
+ Address is held for 1 clock at end of read and write cycles
+ */
+ MCF_FBCS0_CSCR = MCF_FBCS_CSCR_WS(0x7) |
+ (0x1 << 9) | MCF_FBCS_CSCR_AA | MCF_FBCS_CSCR_PS(0x2) | MCF_FBCS_CSCR_BEM;
+ MCF_FBCS0_CSMR = MCF_FBCS_CSMR_BAM(0x1f) | MCF_FBCS_CSMR_V;
+}
+
+/*********************************************************************
+* init_sdram_controller - SDRAM Controller *
+**********************************************************************/
+void init_sdram_controller(void)
+{
+ /* Check to see if the SDRAM has already been initialized
+ by a run control tool and skip if so
+ */
+ if (MCF_SDRAMC_SDCR & MCF_SDRAMC_SDCR_REF)
+ return;
+
+ /* Ensure that there is a delay from processor reset of the time recommended in
+ the SDRAM data sheet (typically 100-200 microseconds) until the following
+ code so that the SDRAM is ready for commands...
+ */
+
+ /* SDRAM controller configured for Double-data rate (DDR) SDRAM
+ Bus width = 16 bits
+ SDRAM specification:
+ SDRAM clock frequency = 80.00 MHz
+ CASL = 2.5
+ ACTV-to-read/write delay, tRCD = 20.0 nanoseconds
+ Write recovery time, tWR = 15.0 nanoseconds
+ Precharge comand to ACTV command, tRP = 20.0 nanoseconds
+ Auto refresh command period, tRFC = 75.0 nanoseconds
+ Average periodic refresh interval, tREFI = 7.8 microseconds
+ */
+
+ /* Memory block 0 enabled - 32 MBytes at address $40000000
+ Block consists of 1 device x 256 MBits (13 rows x 9 columns x 4 banks)
+ */
+ MCF_SDRAMC_SDCS0 = MCF_SDRAMC_SDCS_BASE(0x400) | MCF_SDRAMC_SDCS_CSSZ(0x18);
+
+ /* Memory block 1 disabled */
+ MCF_SDRAMC_SDCS1 = 0;
+
+ /* Initialise SDCFG1 register with delay and timing values
+ SRD2RWP = 4, SWT2RWP = 3, RD_LAT = 7, ACT2RW = 2
+ PRE2ACT = 2, REF2ACT = 6, WT_LAT = 3
+ */
+ MCF_SDRAMC_SDCFG1 = MCF_SDRAMC_SDCFG1_SRD2RW(0x4) |
+ MCF_SDRAMC_SDCFG1_SWT2RD(0x3) |
+ MCF_SDRAMC_SDCFG1_RDLAT(0x7) |
+ MCF_SDRAMC_SDCFG1_ACT2RW(0x2) |
+ MCF_SDRAMC_SDCFG1_PRE2ACT(0x2) |
+ MCF_SDRAMC_SDCFG1_REF2ACT(0x6) | MCF_SDRAMC_SDCFG1_WTLAT(0x3);
+
+ /* Initialise SDCFG2 register with delay and timing values
+ BRD2RP = 5, BWT2RWP = 6, BRD2W = 6, BL = 7
+ */
+ MCF_SDRAMC_SDCFG2 = MCF_SDRAMC_SDCFG2_BRD2PRE(0x5) |
+ MCF_SDRAMC_SDCFG2_BWT2RW(0x6) |
+ MCF_SDRAMC_SDCFG2_BRD2WT(0x6) | MCF_SDRAMC_SDCFG2_BL(0x7);
+
+ /* Issue a Precharge All command */
+ MCF_SDRAMC_SDCR = MCF_SDRAMC_SDCR_MODE_EN |
+ MCF_SDRAMC_SDCR_CKE |
+ MCF_SDRAMC_SDCR_DDR |
+ MCF_SDRAMC_SDCR_MUX(0x1) |
+ MCF_SDRAMC_SDCR_RCNT(0x8) | MCF_SDRAMC_SDCR_PS_16 | MCF_SDRAMC_SDCR_IPALL;
+
+ /* Write Extended Mode Register */
+ MCF_SDRAMC_SDMR = MCF_SDRAMC_SDMR_BNKAD_LEMR | MCF_SDRAMC_SDMR_CMD;
+
+ /* Write Mode Register and Reset DLL */
+ MCF_SDRAMC_SDMR = MCF_SDRAMC_SDMR_BNKAD_LMR |
+ MCF_SDRAMC_SDMR_AD(0x163) | MCF_SDRAMC_SDMR_CMD;
+
+ /* Insert code here to pause for DLL lock time specified by memory... */
+
+ /* Issue a second Precharge All command */
+ MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_IPALL;
+
+ /* Refresh sequence...
+ (check the number of refreshes required by the SDRAM manufacturer)
+ */
+ MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_IREF;
+ MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_IREF;
+
+ /* Write Mode Register and clear the Reset DLL bit */
+ MCF_SDRAMC_SDMR = MCF_SDRAMC_SDMR_BNKAD_LMR |
+ MCF_SDRAMC_SDMR_AD(0x63) | MCF_SDRAMC_SDMR_CMD;
+
+ /* Enable automatic refresh and lock SDMR */
+ MCF_SDRAMC_SDCR &= ~MCF_SDRAMC_SDCR_MODE_EN;
+ MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_REF |
+ MCF_SDRAMC_SDCR_DQS_OE(0x8) | MCF_SDRAMC_SDCR_DQS_OE(0x4);
+
+}
+
+/*********************************************************************
+* init_real_time_clock - Real-Time Clock (RTC) *
+**********************************************************************/
+static void init_real_time_clock(void)
+{
+ /* Disable the RTC */
+ MCF_RTC_CR = 0;
+}
+
+/*********************************************************************
+* init_watchdog_timers - Watchdog Timers *
+**********************************************************************/
+static void init_watchdog_timers(void)
+{
+ /* Watchdog Timer disabled (WCR[EN]=0)
+ NOTE: WCR and WMR cannot be written again until after the
+ processor is reset.
+ */
+ MCF_WTM_WCR = MCF_WTM_WCR_WAIT | MCF_WTM_WCR_DOZE | MCF_WTM_WCR_HALTED;
+
+ /* Core watchdog timer disabled */
+ MCF_SCM_CWCR = MCF_SCM_CWCR_CWT(0x8);
+}
+
+/*********************************************************************
+* init_pin_assignments - Pin Assignment and General Purpose I/O *
+**********************************************************************/
+static void init_pin_assignments(void)
+{
+ /* Pin assignments for port BUSCTL
+ Pin BUSCTL3 : External bus output enable, /OE
+ Pin BUSCTL2 : External bus transfer acknowledge, /TA
+ Pin BUSCTL1 : External bus read/write, R/W
+ Pin BUSCTL0 : External bus transfer start, /TS
+ */
+ MCF_GPIO_PDDR_BUSCTL = 0;
+ MCF_GPIO_PAR_BUSCTL = MCF_GPIO_PAR_BUSCTL_PAR_OE |
+ MCF_GPIO_PAR_BUSCTL_PAR_TA |
+ MCF_GPIO_PAR_BUSCTL_PAR_RWB | MCF_GPIO_PAR_BUSCTL_PAR_TS(0x3);
+
+ /* Pin assignments for port BE
+ Pin BE3 : External bus byte enable BW/BWE3
+ Pin BE2 : External bus byte enable BW/BWE2
+ Pin BE1 : External bus byte enable BW/BWE1
+ Pin BE0 : External bus byte enable BW/BWE0
+ */
+ MCF_GPIO_PDDR_BE = 0;
+ MCF_GPIO_PAR_BE = MCF_GPIO_PAR_BE_PAR_BE3 |
+ MCF_GPIO_PAR_BE_PAR_BE2 |
+ MCF_GPIO_PAR_BE_PAR_BE1 | MCF_GPIO_PAR_BE_PAR_BE0;
+
+ /* Pin assignments for port CS
+ Pin CS5 : Flex bus chip select /FB_CS5
+ Pin CS4 : Flex bus chip select /FB_CS4
+ Pin CS3 : Flex bus chip select /FB_CS3
+ Pin CS2 : Flex bus chip select /FB_CS2
+ Pin CS1 : Flex bus chip select /FB_CS1
+ */
+ MCF_GPIO_PDDR_CS = 0;
+ MCF_GPIO_PAR_CS = MCF_GPIO_PAR_CS_PAR_CS5 |
+ MCF_GPIO_PAR_CS_PAR_CS4 |
+ MCF_GPIO_PAR_CS_PAR_CS3 |
+ MCF_GPIO_PAR_CS_PAR_CS2 | MCF_GPIO_PAR_CS_PAR_CS1;
+
+ /* Pin assignments for port FECI2C
+ Pin FECI2C3 : FEC management data clock, FEC_MDC
+ Pin FECI2C2 : FEC management data, FEC_MDIO
+ Pin FECI2C1 : GPIO input
+ Pin FECI2C0 : GPIO input
+ */
+ MCF_GPIO_PDDR_FECI2C = 0;
+ MCF_GPIO_PAR_FECI2C = MCF_GPIO_PAR_FECI2C_PAR_MDC(0x3) |
+ MCF_GPIO_PAR_FECI2C_PAR_MDIO(0x3);
+
+ /* Pin assignments for ports FECH and FECL
+ Pin FECH7 : FEC transmit clock, FEC_TXCLK
+ Pin FECH6 : FEC transmit enable, FEC_TXEN
+ Pin FECH5 : FEC transmit data 0, FEC_TXD0
+ Pin FECH4 : FEC collision, FEC_COL
+ Pin FECH3 : FEC receive clock, FEC_RXCLK
+ Pin FECH2 : FEC receive data valid, FEC_RXDV
+ Pin FECH1 : FEC receive data 0, FEC_RXD0
+ Pin FECH0 : FEC carrier receive sense, FEC_CRS
+ Pin FECL7 : FEC transmit data 3, FEC_TXD3
+ Pin FECL6 : FEC transmit data 2, FEC_TXD2
+ Pin FECL5 : FEC transmit data 1, FEC_TXD1
+ Pin FECL4 : FEC transmit error, FEC_TXER
+ Pin FECL3 : FEC receive data 3, FEX_RXD3
+ Pin FECL2 : FEC receive data 2, FEX_RXD2
+ Pin FECL1 : FEC receive data 1, FEX_RXD1
+ Pin FECL0 : FEC receive error, FEC_RXER
+ */
+ MCF_GPIO_PDDR_FECH = 0;
+ MCF_GPIO_PDDR_FECL = 0;
+ MCF_GPIO_PAR_FEC = MCF_GPIO_PAR_FEC_PAR_FEC_7W(0x3) |
+ MCF_GPIO_PAR_FEC_PAR_FEC_MII(0x3);
+
+ /* Pin assignments for port IRQ
+ Pins are all used for EdgePort GPIO/IRQ
+ */
+ MCF_GPIO_PAR_IRQ = 0;
+
+ /* Pin assignments for port LCDDATAH
+ Pins are all GPIO inputs
+ */
+ MCF_GPIO_PDDR_LCDDATAH = 0;
+ MCF_GPIO_PAR_LCDDATA = 0;
+
+ /* Pin assignments for port LCDDATAM
+ Port LCDDATAM pins are all GPIO inputs
+ */
+ MCF_GPIO_PDDR_LCDDATAM = 0;
+
+ /* Pin assignments for port LCDDATAL
+ Port LCDDATAL pins are all GPIO inputs
+ */
+ MCF_GPIO_PDDR_LCDDATAL = 0;
+
+ /* Pin assignments for port LCDCTLH
+ Pins are all GPIO inputs
+ */
+ MCF_GPIO_PDDR_LCDCTLH = 0;
+ MCF_GPIO_PAR_LCDCTL = 0;
+
+ /* Pin assignments for port LCDCTLL
+ Pins are all GPIO inputs
+ */
+ MCF_GPIO_PDDR_LCDCTLL = 0;
+
+ /* Pin assignments for port PWM
+ Pins are all GPIO inputs
+ */
+ MCF_GPIO_PDDR_PWM = 0;
+ MCF_GPIO_PAR_PWM = 0;
+
+ /* Pin assignments for port QSPI
+ Pins are all GPIO inputs
+ */
+ MCF_GPIO_PDDR_QSPI = 0;
+ MCF_GPIO_PAR_QSPI = 0;
+
+ /* Pin assignments for port SSI
+ Pins are all GPIO inputs
+ */
+ MCF_GPIO_PDDR_SSI = 0;
+ MCF_GPIO_PAR_SSI = 0;
+
+ /* Pin assignments for port TIMER
+ Pins are all GPIO outputs
+ */
+ MCF_GPIO_PDDR_TIMER = MCF_GPIO_PDDR_TIMER_PDDR_TIMER3 |
+ MCF_GPIO_PDDR_TIMER_PDDR_TIMER2 |
+ MCF_GPIO_PDDR_TIMER_PDDR_TIMER1 | MCF_GPIO_PDDR_TIMER_PDDR_TIMER0;
+ MCF_GPIO_PAR_TIMER = 0;
+
+ /* Pin assignments for port UART
+ Pin UART7 : UART 1 clear-to-send, /U1CTS
+ Pin UART6 : UART 1 request-to-send, /U1RTS
+ Pin UART5 : UART 1 transmit data, U1TXD
+ Pin UART4 : UART 1 receive data, U1RXD
+ Pin UART3 : UART 0 clear-to-send, /U0CTS
+ Pin UART2 : UART 0 request-to-send, /U0RTS
+ Pin UART1 : UART 0 transmit data, U0TXD
+ Pin UART0 : UART 0 receive data, U0RXD
+ */
+ MCF_GPIO_PDDR_UART = 0;
+ MCF_GPIO_PAR_UART = MCF_GPIO_PAR_UART_PAR_UCTS1(0x3) |
+ MCF_GPIO_PAR_UART_PAR_URTS1(0x3) |
+ MCF_GPIO_PAR_UART_PAR_URXD1(0x3) |
+ MCF_GPIO_PAR_UART_PAR_UTXD1(0x3) |
+ MCF_GPIO_PAR_UART_PAR_UCTS0 |
+ MCF_GPIO_PAR_UART_PAR_URTS0 |
+ MCF_GPIO_PAR_UART_PAR_URXD0 | MCF_GPIO_PAR_UART_PAR_UTXD0;
+}