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Diffstat (limited to 'board/mpc8540ads/mpc8540ads.c')
-rw-r--r--board/mpc8540ads/mpc8540ads.c183
1 files changed, 125 insertions, 58 deletions
diff --git a/board/mpc8540ads/mpc8540ads.c b/board/mpc8540ads/mpc8540ads.c
index a994d16..c97e8ba 100644
--- a/board/mpc8540ads/mpc8540ads.c
+++ b/board/mpc8540ads/mpc8540ads.c
@@ -26,6 +26,7 @@
#include <common.h>
+#include <pci.h>
#include <asm/processor.h>
#include <asm/immap_85xx.h>
#include <spd.h>
@@ -36,6 +37,7 @@ extern void ddr_enable_ecc(unsigned int dram_size);
extern long int spd_sdram(void);
+void local_bus_init(void);
void sdram_init(void);
long int fixed_sdram(void);
@@ -43,13 +45,13 @@ long int fixed_sdram(void);
int board_early_init_f (void)
{
#if defined(CONFIG_PCI)
- volatile immap_t *immr = (immap_t *) CFG_IMMR;
- volatile ccsr_pcix_t *pci = &immr->im_pcix;
+ volatile immap_t *immr = (immap_t *)CFG_IMMR;
+ volatile ccsr_pcix_t *pci = &immr->im_pcix;
- pci->peer &= 0xffffffdf; /* disable master abort */
+ pci->peer &= 0xffffffdf; /* disable master abort */
#endif
- return 0;
+ return 0;
}
int checkboard (void)
@@ -63,6 +65,11 @@ int checkboard (void)
printf(" PCI1: disabled\n");
#endif
+ /*
+ * Initialize local bus.
+ */
+ local_bus_init();
+
return 0;
}
@@ -78,15 +85,15 @@ initdram(int board_type)
#if defined(CONFIG_DDR_DLL)
{
- volatile ccsr_gur_t *gur= &immap->im_gur;
- uint temp_ddrdll = 0;
-
- /*
- * Work around to stabilize DDR DLL
- */
- temp_ddrdll = gur->ddrdllcr;
- gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000;
- asm("sync;isync;msync");
+ volatile ccsr_gur_t *gur= &immap->im_gur;
+ uint temp_ddrdll = 0;
+
+ /*
+ * Work around to stabilize DDR DLL
+ */
+ temp_ddrdll = gur->ddrdllcr;
+ gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000;
+ asm("sync;isync;msync");
}
#endif
@@ -114,55 +121,79 @@ initdram(int board_type)
/*
- * Initialize SDRAM memory on the Local Bus.
+ * Initialize Local Bus
*/
-void sdram_init (void)
+void
+local_bus_init(void)
{
-#if !defined(CONFIG_RAM_AS_FLASH)
- sys_info_t sysinfo;
- volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_gur_t *gur = &immap->im_gur;
volatile ccsr_lbc_t *lbc = &immap->im_lbc;
- uint *sdram_addr = (uint *) CFG_LBC_SDRAM_BASE;
- puts (" SDRAM: ");
- print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
-
- /*
- * LocalBus SDRAM is not emulating flash.
- */
+ uint clkdiv;
+ uint lbc_hz;
+ sys_info_t sysinfo;
/*
- * Fix Local Bus clock glitch. Errata LBC11.
+ * Errata LBC11.
+ * Fix Local Bus clock glitch when DLL is enabled.
*
- * If localbus freq is less than 66Mhz, use bypass mode,
- * otherwise use DLL.
- * lcrr is the local-bus clock ratio register.
+ * If localbus freq is < 66Mhz, DLL bypass mode must be used.
+ * If localbus freq is > 133Mhz, DLL can be safely enabled.
+ * Between 66 and 133, the DLL is enabled with an override workaround.
*/
- get_sys_info (&sysinfo);
- if (sysinfo.freqSystemBus / (CFG_LBC_LCRR & 0x0f) < 66000000) {
- lbc->lcrr = (CFG_LBC_LCRR & 0x0fffffff) | 0x80000000;
+
+ get_sys_info(&sysinfo);
+ clkdiv = lbc->lcrr & 0x0f;
+ lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
+
+ if (lbc_hz < 66) {
+ lbc->lcrr = CFG_LBC_LCRR | 0x80000000; /* DLL Bypass */
+
+ } else if (lbc_hz >= 133) {
+ lbc->lcrr = CFG_LBC_LCRR & (~0x80000000); /* DLL Enabled */
} else {
/*
* On REV1 boards, need to change CLKDIV before enable DLL.
* Default CLKDIV is 8, change it to 4 temporarily.
*/
- volatile ccsr_gur_t *gur = &immap->im_gur;
- uint pvr = get_pvr ();
+ uint pvr = get_pvr();
uint temp_lbcdll = 0;
if (pvr == PVR_85xx_REV1) {
+ /* FIXME: Justify the high bit here. */
lbc->lcrr = 0x10000004;
}
- /* FIXME: jdl Should lcrr have 0x8000000 OR'ed in here too? */
- lbc->lcrr = CFG_LBC_LCRR & 0x7fffffff;
- udelay (200);
+ lbc->lcrr = CFG_LBC_LCRR & (~0x80000000); /* DLL Enabled */
+ udelay(200);
+
+ /*
+ * Sample LBC DLL ctrl reg, upshift it to set the
+ * override bits.
+ */
temp_lbcdll = gur->lbcdllcr;
- gur->lbcdllcr = ((temp_lbcdll & 0xff) << 16) | 0x80000000;
- asm ("sync;isync;msync");
+ gur->lbcdllcr = (((temp_lbcdll & 0xff) << 16) | 0x80000000);
+ asm("sync;isync;msync");
}
+}
+
+
+/*
+ * Initialize SDRAM memory on the Local Bus.
+ */
+
+void
+sdram_init(void)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_lbc_t *lbc= &immap->im_lbc;
+ uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;
+
+ puts(" SDRAM: ");
+ print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
/*
* Setup SDRAM Base and Option Registers
@@ -170,46 +201,44 @@ void sdram_init (void)
lbc->or2 = CFG_OR2_PRELIM;
lbc->br2 = CFG_BR2_PRELIM;
lbc->lbcr = CFG_LBC_LBCR;
- asm ("msync");
+ asm("msync");
lbc->lsrt = CFG_LBC_LSRT;
lbc->mrtpr = CFG_LBC_MRTPR;
- asm ("sync");
+ asm("sync");
/*
* Configure the SDRAM controller.
*/
lbc->lsdmr = CFG_LBC_LSDMR_1;
- asm ("sync");
+ asm("sync");
*sdram_addr = 0xff;
- ppcDcbf ((unsigned long) sdram_addr);
- udelay (100);
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_2;
- asm ("sync");
+ asm("sync");
*sdram_addr = 0xff;
- ppcDcbf ((unsigned long) sdram_addr);
- udelay (100);
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_3;
- asm ("sync");
+ asm("sync");
*sdram_addr = 0xff;
- ppcDcbf ((unsigned long) sdram_addr);
- udelay (100);
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_4;
- asm ("sync");
+ asm("sync");
*sdram_addr = 0xff;
- ppcDcbf ((unsigned long) sdram_addr);
- udelay (100);
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_5;
- asm ("sync");
+ asm("sync");
*sdram_addr = 0xff;
- ppcDcbf ((unsigned long) sdram_addr);
- udelay (100);
-
-#endif
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
}
@@ -282,3 +311,41 @@ long int fixed_sdram (void)
return CFG_SDRAM_SIZE * 1024 * 1024;
}
#endif /* !defined(CONFIG_SPD_EEPROM) */
+
+
+#if defined(CONFIG_PCI)
+/*
+ * Initialize PCI Devices, report devices found.
+ */
+
+#ifndef CONFIG_PCI_PNP
+static struct pci_config_table pci_mpc85xxads_config_table[] = {
+ { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+ PCI_IDSEL_NUMBER, PCI_ANY_ID,
+ pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
+ PCI_ENET0_MEMADDR,
+ PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
+ } },
+ { }
+};
+#endif
+
+
+static struct pci_controller hose = {
+#ifndef CONFIG_PCI_PNP
+ config_table: pci_mpc85xxads_config_table,
+#endif
+};
+
+#endif /* CONFIG_PCI */
+
+
+void
+pci_init_board(void)
+{
+#ifdef CONFIG_PCI
+ extern void pci_mpc85xx_init(struct pci_controller *hose);
+
+ pci_mpc85xx_init(&hose);
+#endif /* CONFIG_PCI */
+}
generated by cgit v1.1 at 2024-11-24 22:51:32 +0000