* MA 02111-1307 USA
*
* Port to AMCC-440SPE Evaluation Board SOP - April 2005
+ *
+ * PCIe supporting routines derived from Linux 440SPe PCIe driver.
*/
#include <common.h>
#include <ppc4xx.h>
-#include <asm/processor.h>
#include <i2c.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/4xx_pcie.h>
+
#include "yucca.h"
-void fpga_init (void);
+DECLARE_GLOBAL_DATA_PTR;
+
+void fpga_init (void);
void get_sys_info(PPC440_SYS_INFO *board_cfg );
int compare_to_true(char *str );
char *remove_l_w_space(char *in_str );
char *remove_t_w_space(char *in_str );
int get_console_port(void);
-unsigned long ppcMfcpr(unsigned long cpr_reg);
-unsigned long ppcMfsdr(unsigned long sdr_reg);
#define DEBUG_ENV
#ifdef DEBUG_ENV
|
+-------------------------------------------------------------------*/
/* Read Pin Strap Register in PPC440SP */
- sdr0_pinstp = ppcMfsdr(SDR0_PINSTP);
+ mfsdr(SDR0_PINSTP, sdr0_pinstp);
bootstrap_settings = sdr0_pinstp & SDR0_PINSTP_BOOTSTRAP_MASK;
switch (bootstrap_settings) {
* Boot Settings in IIC EEprom address 0x50 or 0x54
* Read Serial Device Strap Register1 in PPC440SPe
*/
- sdr0_sdstp1 = ppcMfsdr(SDR0_SDSTP1);
+ mfsdr(SDR0_SDSTP1, sdr0_sdstp1);
boot_selection = sdr0_sdstp1 & SDR0_SDSTP1_ERPN_MASK;
ebc_data_width = sdr0_sdstp1 & SDR0_SDSTP1_EBCW_MASK;
return 0;
}
-static long int yucca_probe_for_dimms(void)
+/*
+ * Override the default functions in cpu/ppc4xx/44x_spd_ddr2.c with
+ * board specific values.
+ */
+static int ppc440spe_rev_a(void)
{
- long int dimm_installed[MAXDIMMS];
- long int dimm_num, probe_result;
- long int dimms_found = 0;
- uchar dimm_addr = IIC0_DIMM0_ADDR;
-
- for (dimm_num = 0; dimm_num < MAXDIMMS; dimm_num++) {
- /* check if there is a chip at the dimm address */
- switch (dimm_num) {
- case 0:
- dimm_addr = IIC0_DIMM0_ADDR;
- break;
- case 1:
- dimm_addr = IIC0_DIMM1_ADDR;
- break;
- }
- probe_result = i2c_probe(dimm_addr);
-
- if (probe_result == 0) {
- dimm_installed[dimm_num] = TRUE;
- dimms_found++;
- debug("DIMM slot %d: DDR2 SDRAM detected\n",dimm_num);
- } else {
- dimm_installed[dimm_num] = FALSE;
- debug("DIMM slot %d: Not populated or cannot sucessfully probe the DIMM\n", dimm_num);
- }
- }
-
- if (dimms_found == 0) {
- printf("ERROR - No memory installed. Install a DDR-SDRAM DIMM.\n\n");
- hang();
- }
-
- if (dimm_installed[0] != TRUE) {
- printf("\nERROR - DIMM slot 0 must be populated before DIMM slot 1.\n");
- printf(" Unsupported configuration. Move DIMM module from DIMM slot 1 to slot 0.\n\n");
- hang();
- }
-
- return dimms_found;
+ if ((get_pvr() == PVR_440SPe_6_RA) || (get_pvr() == PVR_440SPe_RA))
+ return 1;
+ else
+ return 0;
}
-/*************************************************************************
- * init SDRAM controller with fixed value
- * the initialization values are for 2x MICRON DDR2
- * PN: MT18HTF6472DY-53EB2
- * 512MB, DDR2, 533, CL4, ECC, REG
- ************************************************************************/
-static long int fixed_sdram(void)
-{
- long int yucca_dimms = 0;
-
- yucca_dimms = yucca_probe_for_dimms();
-
- /* SDRAM0_MCOPT2 (0X21) Clear DCEN BIT */
- mtdcr( 0x10, 0x00000021 );
- mtdcr( 0x11, 0x84000000 );
-
- /* SDRAM0_MCOPT1 (0X20) ECC OFF / 64 bits / 4 banks / DDR2 */
- mtdcr( 0x10, 0x00000020 );
- mtdcr( 0x11, 0x2D122000 );
-
- /* SET MCIF0_CODT Die Termination On */
- mtdcr( 0x10, 0x00000026 );
- if (yucca_dimms == 2)
- mtdcr( 0x11, 0x2A800021 );
- else if (yucca_dimms == 1)
- mtdcr( 0x11, 0x02800021 );
-
- /* On-Die Termination for Bank 0 */
- mtdcr( 0x10, 0x00000022 );
- if (yucca_dimms == 2)
- mtdcr( 0x11, 0x18000000 );
- else if (yucca_dimms == 1)
- mtdcr( 0x11, 0x06000000 );
-
- /* On-Die Termination for Bank 1 */
- mtdcr( 0x10, 0x00000023 );
- if (yucca_dimms == 2)
- mtdcr( 0x11, 0x18000000 );
- else if (yucca_dimms == 1)
- mtdcr( 0x11, 0x01800000 );
-
- /* On-Die Termination for Bank 2 */
- mtdcr( 0x10, 0x00000024 );
- if (yucca_dimms == 2)
- mtdcr( 0x11, 0x01800000 );
- else if (yucca_dimms == 1)
- mtdcr( 0x11, 0x00000000 );
-
- /* On-Die Termination for Bank 3 */
- mtdcr( 0x10, 0x00000025 );
- if (yucca_dimms == 2)
- mtdcr( 0x11, 0x01800000 );
- else if (yucca_dimms == 1)
- mtdcr( 0x11, 0x00000000 );
-
- /* Refresh Time register (0x30) Refresh every 7.8125uS */
- mtdcr( 0x10, 0x00000030 );
- mtdcr( 0x11, 0x08200000 );
-
- /* SET MCIF0_MMODE CL 4 */
- mtdcr( 0x10, 0x00000088 );
- mtdcr( 0x11, 0x00000642 );
-
- /* MCIF0_MEMODE */
- mtdcr( 0x10, 0x00000089 );
- mtdcr( 0x11, 0x00000004 );
-
- /*SET MCIF0_MB0CF */
- mtdcr( 0x10, 0x00000040 );
- mtdcr( 0x11, 0x00000201 );
-
- /* SET MCIF0_MB1CF */
- mtdcr( 0x10, 0x00000044 );
- mtdcr( 0x11, 0x00000201 );
-
- /* SET MCIF0_MB2CF */
- mtdcr( 0x10, 0x00000048 );
- if (yucca_dimms == 2)
- mtdcr( 0x11, 0x00000201 );
- else if (yucca_dimms == 1)
- mtdcr( 0x11, 0x00000000 );
-
- /* SET MCIF0_MB3CF */
- mtdcr( 0x10, 0x0000004c );
- if (yucca_dimms == 2)
- mtdcr( 0x11, 0x00000201 );
- else if (yucca_dimms == 1)
- mtdcr( 0x11, 0x00000000 );
-
- /* SET MCIF0_INITPLR0 # NOP */
- mtdcr( 0x10, 0x00000050 );
- mtdcr( 0x11, 0xB5380000 );
-
- /* SET MCIF0_INITPLR1 # PRE */
- mtdcr( 0x10, 0x00000051 );
- mtdcr( 0x11, 0x82100400 );
-
- /* SET MCIF0_INITPLR2 # EMR2 */
- mtdcr( 0x10, 0x00000052 );
- mtdcr( 0x11, 0x80820000 );
-
- /* SET MCIF0_INITPLR3 # EMR3 */
- mtdcr( 0x10, 0x00000053 );
- mtdcr( 0x11, 0x80830000 );
-
- /* SET MCIF0_INITPLR4 # EMR DLL ENABLE */
- mtdcr( 0x10, 0x00000054 );
- mtdcr( 0x11, 0x80810000 );
-
- /* SET MCIF0_INITPLR5 # MR DLL RESET */
- mtdcr( 0x10, 0x00000055 );
- mtdcr( 0x11, 0x80800542 );
-
- /* SET MCIF0_INITPLR6 # PRE */
- mtdcr( 0x10, 0x00000056 );
- mtdcr( 0x11, 0x82100400 );
-
- /* SET MCIF0_INITPLR7 # Refresh */
- mtdcr( 0x10, 0x00000057 );
- mtdcr( 0x11, 0x8A080000 );
-
- /* SET MCIF0_INITPLR8 # Refresh */
- mtdcr( 0x10, 0x00000058 );
- mtdcr( 0x11, 0x8A080000 );
-
- /* SET MCIF0_INITPLR9 # Refresh */
- mtdcr( 0x10, 0x00000059 );
- mtdcr( 0x11, 0x8A080000 );
-
- /* SET MCIF0_INITPLR10 # Refresh */
- mtdcr( 0x10, 0x0000005A );
- mtdcr( 0x11, 0x8A080000 );
-
- /* SET MCIF0_INITPLR11 # MR */
- mtdcr( 0x10, 0x0000005B );
- mtdcr( 0x11, 0x80800442 );
-
- /* SET MCIF0_INITPLR12 # EMR OCD Default*/
- mtdcr( 0x10, 0x0000005C );
- mtdcr( 0x11, 0x80810380 );
-
- /* SET MCIF0_INITPLR13 # EMR OCD Exit */
- mtdcr( 0x10, 0x0000005D );
- mtdcr( 0x11, 0x80810000 );
-
- /* 0x80: Adv Addr clock by 180 deg */
- mtdcr( 0x10, 0x00000080 );
- mtdcr( 0x11, 0x80000000 );
-
- /* 0x21: Exit self refresh, set DC_EN */
- mtdcr( 0x10, 0x00000021 );
- mtdcr( 0x11, 0x28000000 );
-
- /* 0x81: Write DQS Adv 90 + Fractional DQS Delay */
- mtdcr( 0x10, 0x00000081 );
- mtdcr( 0x11, 0x80000800 );
-
- /* MCIF0_SDTR1 */
- mtdcr( 0x10, 0x00000085 );
- mtdcr( 0x11, 0x80201000 );
-
- /* MCIF0_SDTR2 */
- mtdcr( 0x10, 0x00000086 );
- mtdcr( 0x11, 0x42103242 );
-
- /* MCIF0_SDTR3 */
- mtdcr( 0x10, 0x00000087 );
- mtdcr( 0x11, 0x0C100D14 );
-
- /* SET MQ0_B0BAS base addr 00000000 / 256MB */
- mtdcr( 0x40, 0x0000F800 );
-
- /* SET MQ0_B1BAS base addr 10000000 / 256MB */
- mtdcr( 0x41, 0x0400F800 );
-
- /* SET MQ0_B2BAS base addr 20000000 / 256MB */
- if (yucca_dimms == 2)
- mtdcr( 0x42, 0x0800F800 );
- else if (yucca_dimms == 1)
- mtdcr( 0x42, 0x00000000 );
-
- /* SET MQ0_B3BAS base addr 30000000 / 256MB */
- if (yucca_dimms == 2)
- mtdcr( 0x43, 0x0C00F800 );
- else if (yucca_dimms == 1)
- mtdcr( 0x43, 0x00000000 );
-
- /* SDRAM_RQDC */
- mtdcr( 0x10, 0x00000070 );
- mtdcr( 0x11, 0x8000003F );
-
- /* SDRAM_RDCC */
- mtdcr( 0x10, 0x00000078 );
- mtdcr( 0x11, 0x80000000 );
-
- /* SDRAM_RFDC */
- mtdcr( 0x10, 0x00000074 );
- mtdcr( 0x11, 0x00000220 );
+u32 ddr_wrdtr(u32 default_val) {
+ /*
+ * Yucca boards with 440SPe rev. A need a slightly different setup
+ * for the MCIF0_WRDTR register.
+ */
+ if (ppc440spe_rev_a())
+ return (SDRAM_WRDTR_LLWP_1_CYC | SDRAM_WRDTR_WTR_270_DEG_ADV);
- return (yucca_dimms * 512) << 20;
+ return default_val;
}
-long int initdram (int board_type)
-{
- long dram_size = 0;
-
- dram_size = fixed_sdram();
+u32 ddr_clktr(u32 default_val) {
+ /*
+ * Yucca boards with 440SPe rev. A need a slightly different setup
+ * for the MCIF0_CLKTR register.
+ */
+ if (ppc440spe_rev_a())
+ return (SDRAM_CLKTR_CLKP_180_DEG_ADV);
- return dram_size;
+ return default_val;
}
#if defined(CFG_DRAM_TEST)
* certain pre-initialization actions.
*
************************************************************************/
-#if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT)
+#if defined(CONFIG_PCI)
int pci_pre_init(struct pci_controller * hose )
{
unsigned long strap;
return 1;
}
-#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
+#endif /* defined(CONFIG_PCI) */
/*************************************************************************
* pci_target_init
#if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
void pci_target_init(struct pci_controller * hose )
{
- DECLARE_GLOBAL_DATA_PTR;
-
/*-------------------------------------------------------------------+
* Disable everything
*-------------------------------------------------------------------*/
}
#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
+#if defined(CONFIG_PCI)
/*************************************************************************
* is_pci_host
*
*
*
************************************************************************/
-#if defined(CONFIG_PCI)
int is_pci_host(struct pci_controller *hose)
{
/* The yucca board is always configured as host. */
return 1;
}
+
+int yucca_pcie_card_present(int port)
+{
+ u16 reg;
+
+ reg = in_be16((u16 *)FPGA_REG1C);
+ switch(port) {
+ case 0:
+ return !(reg & FPGA_REG1C_PE0_PRSNT);
+ case 1:
+ return !(reg & FPGA_REG1C_PE1_PRSNT);
+ case 2:
+ return !(reg & FPGA_REG1C_PE2_PRSNT);
+ default:
+ return 0;
+ }
+}
+
+/*
+ * For the given slot, set rootpoint mode, send power to the slot,
+ * turn on the green LED and turn off the yellow LED, enable the clock
+ * and turn off reset.
+ */
+void yucca_setup_pcie_fpga_rootpoint(int port)
+{
+ u16 power, clock, green_led, yellow_led, reset_off, rootpoint, endpoint;
+
+ switch(port) {
+ case 0:
+ rootpoint = FPGA_REG1C_PE0_ROOTPOINT;
+ endpoint = 0;
+ power = FPGA_REG1A_PE0_PWRON;
+ green_led = FPGA_REG1A_PE0_GLED;
+ clock = FPGA_REG1A_PE0_REFCLK_ENABLE;
+ yellow_led = FPGA_REG1A_PE0_YLED;
+ reset_off = FPGA_REG1C_PE0_PERST;
+ break;
+ case 1:
+ rootpoint = 0;
+ endpoint = FPGA_REG1C_PE1_ENDPOINT;
+ power = FPGA_REG1A_PE1_PWRON;
+ green_led = FPGA_REG1A_PE1_GLED;
+ clock = FPGA_REG1A_PE1_REFCLK_ENABLE;
+ yellow_led = FPGA_REG1A_PE1_YLED;
+ reset_off = FPGA_REG1C_PE1_PERST;
+ break;
+ case 2:
+ rootpoint = 0;
+ endpoint = FPGA_REG1C_PE2_ENDPOINT;
+ power = FPGA_REG1A_PE2_PWRON;
+ green_led = FPGA_REG1A_PE2_GLED;
+ clock = FPGA_REG1A_PE2_REFCLK_ENABLE;
+ yellow_led = FPGA_REG1A_PE2_YLED;
+ reset_off = FPGA_REG1C_PE2_PERST;
+ break;
+
+ default:
+ return;
+ }
+
+ out_be16((u16 *)FPGA_REG1A,
+ ~(power | clock | green_led) &
+ (yellow_led | in_be16((u16 *)FPGA_REG1A)));
+
+ out_be16((u16 *)FPGA_REG1C,
+ ~(endpoint | reset_off) &
+ (rootpoint | in_be16((u16 *)FPGA_REG1C)));
+ /*
+ * Leave device in reset for a while after powering on the
+ * slot to give it a chance to initialize.
+ */
+ udelay(250 * 1000);
+
+ out_be16((u16 *)FPGA_REG1C, reset_off | in_be16((u16 *)FPGA_REG1C));
+}
+/*
+ * For the given slot, set endpoint mode, send power to the slot,
+ * turn on the green LED and turn off the yellow LED, enable the clock
+ * .In end point mode reset bit is read only.
+ */
+void yucca_setup_pcie_fpga_endpoint(int port)
+{
+ u16 power, clock, green_led, yellow_led, reset_off, rootpoint, endpoint;
+
+ switch(port) {
+ case 0:
+ rootpoint = FPGA_REG1C_PE0_ROOTPOINT;
+ endpoint = 0;
+ power = FPGA_REG1A_PE0_PWRON;
+ green_led = FPGA_REG1A_PE0_GLED;
+ clock = FPGA_REG1A_PE0_REFCLK_ENABLE;
+ yellow_led = FPGA_REG1A_PE0_YLED;
+ reset_off = FPGA_REG1C_PE0_PERST;
+ break;
+ case 1:
+ rootpoint = 0;
+ endpoint = FPGA_REG1C_PE1_ENDPOINT;
+ power = FPGA_REG1A_PE1_PWRON;
+ green_led = FPGA_REG1A_PE1_GLED;
+ clock = FPGA_REG1A_PE1_REFCLK_ENABLE;
+ yellow_led = FPGA_REG1A_PE1_YLED;
+ reset_off = FPGA_REG1C_PE1_PERST;
+ break;
+ case 2:
+ rootpoint = 0;
+ endpoint = FPGA_REG1C_PE2_ENDPOINT;
+ power = FPGA_REG1A_PE2_PWRON;
+ green_led = FPGA_REG1A_PE2_GLED;
+ clock = FPGA_REG1A_PE2_REFCLK_ENABLE;
+ yellow_led = FPGA_REG1A_PE2_YLED;
+ reset_off = FPGA_REG1C_PE2_PERST;
+ break;
+
+ default:
+ return;
+ }
+
+ out_be16((u16 *)FPGA_REG1A,
+ ~(power | clock | green_led) &
+ (yellow_led | in_be16((u16 *)FPGA_REG1A)));
+
+ out_be16((u16 *)FPGA_REG1C,
+ ~(rootpoint | reset_off) &
+ (endpoint | in_be16((u16 *)FPGA_REG1C)));
+}
+
+static struct pci_controller pcie_hose[3] = {{0},{0},{0}};
+
+void pcie_setup_hoses(int busno)
+{
+ struct pci_controller *hose;
+ int i, bus;
+ int ret = 0;
+ char *env;
+ unsigned int delay;
+
+ /*
+ * assume we're called after the PCIX hose is initialized, which takes
+ * bus ID 0 and therefore start numbering PCIe's from 1.
+ */
+ bus = busno;
+ for (i = 0; i <= 2; i++) {
+ /* Check for yucca card presence */
+ if (!yucca_pcie_card_present(i))
+ continue;
+
+ if (is_end_point(i)) {
+ printf("PCIE%d: will be configured as endpoint\n",i);
+ yucca_setup_pcie_fpga_endpoint(i);
+ ret = ppc4xx_init_pcie_endport(i);
+ } else {
+ printf("PCIE%d: will be configured as root-complex\n",i);
+ yucca_setup_pcie_fpga_rootpoint(i);
+ ret = ppc4xx_init_pcie_rootport(i);
+ }
+ if (ret) {
+ printf("PCIE%d: initialization failed\n", i);
+ continue;
+ }
+
+ hose = &pcie_hose[i];
+ hose->first_busno = bus;
+ hose->last_busno = bus;
+ hose->current_busno = bus;
+
+ /* setup mem resource */
+ pci_set_region(hose->regions + 0,
+ CFG_PCIE_MEMBASE + i * CFG_PCIE_MEMSIZE,
+ CFG_PCIE_MEMBASE + i * CFG_PCIE_MEMSIZE,
+ CFG_PCIE_MEMSIZE,
+ PCI_REGION_MEM);
+ hose->region_count = 1;
+ pci_register_hose(hose);
+
+ if (is_end_point(i)) {
+ ppc4xx_setup_pcie_endpoint(hose, i);
+ /*
+ * Reson for no scanning is endpoint can not generate
+ * upstream configuration accesses.
+ */
+ } else {
+ ppc4xx_setup_pcie_rootpoint(hose, i);
+ env = getenv("pciscandelay");
+ if (env != NULL) {
+ delay = simple_strtoul(env, NULL, 10);
+ if (delay > 5)
+ printf("Warning, expect noticable delay before "
+ "PCIe scan due to 'pciscandelay' value!\n");
+ mdelay(delay * 1000);
+ }
+
+ /*
+ * Config access can only go down stream
+ */
+ hose->last_busno = pci_hose_scan(hose);
+ bus = hose->last_busno + 1;
+ }
+ }
+}
#endif /* defined(CONFIG_PCI) */
int misc_init_f (void)
#endif
return (BOARD_OPTION_NOT_SELECTED);
}
-
-/*---------------------------------------------------------------------------+
- | ppcMfcpr.
- +---------------------------------------------------------------------------*/
-unsigned long ppcMfcpr(unsigned long cpr_reg)
-{
- unsigned long msr;
- unsigned long cpr_cfgaddr_temp;
- unsigned long cpr_value;
-
- msr = (mfmsr () & ~(MSR_EE));
- cpr_cfgaddr_temp = mfdcr(CPR0_CFGADDR);
- mtdcr(CPR0_CFGADDR, cpr_reg);
- cpr_value = mfdcr(CPR0_CFGDATA);
- mtdcr(CPR0_CFGADDR, cpr_cfgaddr_temp);
- mtmsr(msr);
-
- return (cpr_value);
-}
-
-/*----------------------------------------------------------------------------+
-| Indirect Access of the System DCR's (SDR)
-| ppcMfsdr
-+----------------------------------------------------------------------------*/
-unsigned long ppcMfsdr(unsigned long sdr_reg)
-{
- unsigned long msr;
- unsigned long sdr_cfgaddr_temp;
- unsigned long sdr_value;
-
- msr = (mfmsr () & ~(MSR_EE));
- sdr_cfgaddr_temp = mfdcr(SDR0_CFGADDR);
- mtdcr(SDR0_CFGADDR, sdr_reg);
- sdr_value = mfdcr(SDR0_CFGDATA);
- mtdcr(SDR0_CFGADDR, sdr_cfgaddr_temp);
- mtmsr(msr);
-
- return (sdr_value);
-}
projects / platform / kernel / u-boot.git / blobdiff