ppc4xx: Update PMC440 board support

This patch brings PMC440 board support up to date:

- fix GPIO configuration
- add misc_init_f()
- use better values for usbact variable
- fix USB 2.0 phy reset sequence
- shrink BAR2 to save PCI address space
- add FDT support

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Signed-off-by: Stefan Roese <sr@denx.de>

diff --git a/board/esd/pmc440/pmc440.c b/board/esd/pmc440/pmc440.c
index 013815e2659dc0dbd51cc74a7407f4c32ee0d98e..8563d7d5f2cb50a87d7bc129eb86903ecfc3c651 100644 (file)
--- a/board/esd/pmc440/pmc440.c
+++ b/board/esd/pmc440/pmc440.c
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2007-2008
+ * (Cg) Copyright 2007-2008
  * Matthias Fuchs, esd gmbh, matthias.fuchs@esd-electronics.com.
  * Based on board/amcc/sequoia/sequoia.c
  *
@@ -45,9 +45,11 @@
 DECLARE_GLOBAL_DATA_PTR;
 
 extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
+extern void __ft_board_setup(void *blob, bd_t *bd);
 
 ulong flash_get_size(ulong base, int banknum);
 int pci_is_66mhz(void);
+int is_monarch(void);
 int bootstrap_eeprom_read(unsigned dev_addr, unsigned offset,
                          uchar *buffer, unsigned cnt);
 
@@ -107,9 +109,9 @@ int board_early_init_f(void)
         */
        out32(GPIO0_OR,    0x40000002);
        out32(GPIO0_TCR,   0x4c90011f);
-       out32(GPIO0_OSRL,  0x28011400);
+       out32(GPIO0_OSRL,  0x28051400);
        out32(GPIO0_OSRH,  0x55005000);
-       out32(GPIO0_TSRL,  0x08011400);
+       out32(GPIO0_TSRL,  0x08051400);
        out32(GPIO0_TSRH,  0x55005000);
        out32(GPIO0_ISR1L, 0x54000000);
        out32(GPIO0_ISR1H, 0x00000000);
@@ -196,6 +198,23 @@ int board_early_init_f(void)
        return 0;
 }
 
+#if defined(CONFIG_MISC_INIT_F)
+int misc_init_f(void)
+{
+       struct pci_controller hose;
+       hose.first_busno = 0;
+       hose.last_busno = 0;
+       hose.region_count = 0;
+
+       if (getenv("pciearly") && (!is_monarch())) {
+               printf("PCI:   early target init\n");
+               pci_setup_indirect(&hose, PCIX0_CFGADR, PCIX0_CFGDATA);
+               pci_target_init(&hose);
+       }
+       return 0;
+}
+#endif
+
 /*
  * misc_init_r.
  */
@@ -207,6 +226,7 @@ int misc_init_r(void)
        unsigned long usb2d0cr = 0;
        unsigned long usb2phy0cr, usb2h0cr = 0;
        unsigned long sdr0_pfc1;
+       unsigned long sdr0_srst0, sdr0_srst1;
        char *act = getenv("usbact");
 
        /*
@@ -256,7 +276,7 @@ int misc_init_r(void)
        /*
         * USB suff...
         */
-       if ((act == NULL || strcmp(act, "hostdev") == 0) &&
+       if ((act == NULL || strcmp(act, "host") == 0) &&
            !(in_be32((void*)GPIO0_IR) & GPIO0_USB_PRSNT)){
                /* SDR Setting */
                mfsdr(SDR0_PFC1, sdr0_pfc1);
@@ -290,12 +310,46 @@ int misc_init_r(void)
                mtsdr(SDR0_USB2PHY0CR, usb2phy0cr);
                mtsdr(SDR0_USB2H0CR, usb2h0cr);
 
-               /* clear resets */
+               /*
+                * Take USB out of reset:
+                * -Initial status = all cores are in reset
+                * -deassert reset to OPB1, P4OPB0, OPB2, PLB42OPB1 OPB2PLB40 cores
+                * -wait 1 ms
+                * -deassert reset to PHY
+                * -wait 1 ms
+                * -deassert  reset to HOST
+                * -wait 4 ms
+                * -deassert all other resets
+                */
+               mfsdr(SDR0_SRST1, sdr0_srst1);
+               sdr0_srst1 &= ~(SDR0_SRST1_OPBA1 |      \
+                               SDR0_SRST1_P4OPB0 |     \
+                               SDR0_SRST1_OPBA2 |      \
+                               SDR0_SRST1_PLB42OPB1 |  \
+                               SDR0_SRST1_OPB2PLB40);
+               mtsdr(SDR0_SRST1, sdr0_srst1);
+               udelay(1000);
+
+               mfsdr(SDR0_SRST1, sdr0_srst1);
+               sdr0_srst1 &= ~SDR0_SRST1_USB20PHY;
+               mtsdr(SDR0_SRST1, sdr0_srst1);
                udelay(1000);
+
+               mfsdr(SDR0_SRST0, sdr0_srst0);
+               sdr0_srst0 &= ~SDR0_SRST0_USB2H;
+               mtsdr(SDR0_SRST0, sdr0_srst0);
+               udelay(4000);
+
+               /* finally all the other resets */
                mtsdr(SDR0_SRST1, 0x00000000);
-               udelay(1000);
                mtsdr(SDR0_SRST0, 0x00000000);
 
+               if (!(in_be32((void*)GPIO0_IR) & GPIO0_USB_PRSNT)) {
+                       /* enable power on USB socket */
+                       out_be32((void*)GPIO1_OR,
+                                in_be32((void*)GPIO1_OR) & ~GPIO1_USB_PWR_N);
+               }
+
                printf("USB:   Host\n");
 
        } else if ((strcmp(act, "dev") == 0) ||
@@ -547,14 +601,14 @@ void pci_target_init(struct pci_controller *hose)
                out32r(PCIX0_PTM2MS, simple_strtoul(ptmms_str, NULL, 16));
                out32r(PCIX0_PTM2LA, simple_strtoul(ptmla_str, NULL, 16));
        } else {
-               /* BAR2: default: 16 MB FPGA + registers */
-               out32r(PCIX0_PTM2MS, 0xff000001); /* Memory Size/Attribute */
+               /* BAR2: default: 4MB FPGA */
+               out32r(PCIX0_PTM2MS, 0xffc00001); /* Memory Size/Attribute */
                out32r(PCIX0_PTM2LA, 0xef000000); /* Local Addr. Reg */
        }
 
        if (is_monarch()) {
                /* BAR2: map FPGA registers behind system memory at 1GB */
-               pci_write_config_dword(0, PCI_BASE_ADDRESS_2, 0x40000008);
+               pci_hose_write_config_dword(hose, 0, PCI_BASE_ADDRESS_2, 0x40000008);
        }
 
        /*
@@ -562,8 +616,8 @@ void pci_target_init(struct pci_controller *hose)
         */
 
        /* Program the board's vendor id */
-       pci_write_config_word(0, PCI_SUBSYSTEM_VENDOR_ID,
-                             CONFIG_SYS_PCI_SUBSYS_VENDORID);
+       pci_hose_write_config_word(hose, 0, PCI_SUBSYSTEM_VENDOR_ID,
+                                  CONFIG_SYS_PCI_SUBSYS_VENDORID);
 
        /* disabled for PMC405 backward compatibility */
        /* Configure command register as bus master */
@@ -571,19 +625,19 @@ void pci_target_init(struct pci_controller *hose)
 
 
        /* 240nS PCI clock */
-       pci_write_config_word(0, PCI_LATENCY_TIMER, 1);
+       pci_hose_write_config_word(hose, 0, PCI_LATENCY_TIMER, 1);
 
        /* No error reporting */
-       pci_write_config_word(0, PCI_ERREN, 0);
+       pci_hose_write_config_word(hose, 0, PCI_ERREN, 0);
 
        pci_write_config_dword(0, PCI_BRDGOPT2, 0x00000101);
 
        if (!is_monarch()) {
                /* Program the board's subsystem id/classcode */
-               pci_write_config_word(0, PCI_SUBSYSTEM_ID,
-                                     CONFIG_SYS_PCI_SUBSYS_ID_NONMONARCH);
-               pci_write_config_word(0, PCI_CLASS_SUB_CODE,
-                                     CONFIG_SYS_PCI_CLASSCODE_NONMONARCH);
+               pci_hose_write_config_word(hose, 0, PCI_SUBSYSTEM_ID,
+                                          CONFIG_SYS_PCI_SUBSYS_ID_NONMONARCH);
+               pci_hose_write_config_word(hose, 0, PCI_CLASS_SUB_CODE,
+                                          CONFIG_SYS_PCI_CLASSCODE_NONMONARCH);
 
                /* PCI configuration done: release ERREADY */
                out_be32((void*)GPIO1_OR,
@@ -592,11 +646,14 @@ void pci_target_init(struct pci_controller *hose)
                         in_be32((void*)GPIO1_TCR) | GPIO1_PPC_EREADY);
        } else {
                /* Program the board's subsystem id/classcode */
-               pci_write_config_word(0, PCI_SUBSYSTEM_ID,
-                                     CONFIG_SYS_PCI_SUBSYS_ID_MONARCH);
-               pci_write_config_word(0, PCI_CLASS_SUB_CODE,
-                                     CONFIG_SYS_PCI_CLASSCODE_MONARCH);
+               pci_hose_write_config_word(hose, 0, PCI_SUBSYSTEM_ID,
+                                          CONFIG_SYS_PCI_SUBSYS_ID_MONARCH);
+               pci_hose_write_config_word(hose, 0, PCI_CLASS_SUB_CODE,
+                                          CONFIG_SYS_PCI_CLASSCODE_MONARCH);
        }
+
+       /* enable host configuration */
+       pci_hose_write_config_dword(hose, 0, PCI_BRDGOPT2, 0x00000101);
 }
 #endif /* defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_TARGET_INIT) */
 
@@ -626,6 +683,12 @@ static void wait_for_pci_ready(void)
 {
        int i;
        char *s = getenv("pcidelay");
+       /*
+        * We have our own handling of the pcidelay variable.
+        * Using CONFIG_PCI_BOOTDELAY enables pausing for host
+        * and adapter devices. For adapter devices we do not
+        * want this.
+        */
        if (s) {
                int ms = simple_strtoul(s, NULL, 10);
                printf("PCI:   Waiting for %d ms\n", ms);
@@ -851,7 +914,7 @@ int usb_board_init(void)
        char *act = getenv("usbact");
        int i;
 
-       if ((act == NULL || strcmp(act, "hostdev") == 0) &&
+       if ((act == NULL || strcmp(act, "host") == 0) &&
            !(in_be32((void*)GPIO0_IR) & GPIO0_USB_PRSNT))
                /* enable power on USB socket */
                out_be32((void*)GPIO1_OR,
@@ -876,3 +939,24 @@ int usb_board_init_fail(void)
        return 0;
 }
 #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_BOARD_INIT) */
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+       int rc;
+
+       __ft_board_setup(blob, bd);
+
+       /*
+        * Disable PCI in non-monarch mode.
+        */
+       if (!is_monarch()) {
+               rc = fdt_find_and_setprop(blob, "/plb/pci@1ec000000", "status",
+                                         "disabled", sizeof("disabled"), 1);
+               if (rc) {
+                       printf("Unable to update property status in PCI node, err=%s\n",
+                              fdt_strerror(rc));
+               }
+       }
+}
+#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */