ppc4xx: Add ptm configuration variables for PMC440

Add support for the ptm1la, ptm1ms, ptm2la and ptm2ms
environment variables.

Cleanup pci_target_init.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>

diff --git a/board/esd/pmc440/pmc440.c b/board/esd/pmc440/pmc440.c
index edf3a14..f1cfef2 100644 (file)
--- a/board/esd/pmc440/pmc440.c
+++ b/board/esd/pmc440/pmc440.c
@@ -512,55 +512,75 @@ int pci_pre_init(struct pci_controller *hose)
 }
 #endif /* defined(CONFIG_PCI) */
 
-/*************************************************************************
- *  pci_target_init
- *
- *     The bootstrap configuration provides default settings for the pci
- *     inbound map (PIM). But the bootstrap config choices are limited and
- *     may not be sufficient for a given board.
+/*
+ * pci_target_init
  *
- ************************************************************************/
+ * The bootstrap configuration provides default settings for the pci
+ * inbound map (PIM). But the bootstrap config choices are limited and
+ * may not be sufficient for a given board.
+ */
 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
 void pci_target_init(struct pci_controller *hose)
 {
-       /*--------------------------------------------------------------------------+
+       char *ptmla_str, *ptmms_str;
+
+       /*
         * Set up Direct MMIO registers
-        *--------------------------------------------------------------------------*/
-       /*--------------------------------------------------------------------------+
-         | PowerPC440EPX PCI Master configuration.
-         | Map one 1Gig range of PLB/processor addresses to PCI memory space.
-         |   PLB address 0x80000000-0xBFFFFFFF ==> PCI address 0x80000000-0xBFFFFFFF
-         |   Use byte reversed out routines to handle endianess.
-         | Make this region non-prefetchable.
-         +--------------------------------------------------------------------------*/
-       out32r(PCIX0_PMM0MA, 0x00000000);       /* PMM0 Mask/Attribute - disabled b4 setting */
+        */
+       /*
+        * PowerPC440EPX PCI Master configuration.
+        * Map one 1Gig range of PLB/processor addresses to PCI memory space.
+        * PLB address 0x80000000-0xBFFFFFFF
+        *     ==> PCI address 0x80000000-0xBFFFFFFF
+        * Use byte reversed out routines to handle endianess.
+        * Make this region non-prefetchable.
+        */
+       out32r(PCIX0_PMM0MA, 0x00000000);       /* PMM0 Mask/Attribute */
+                                               /* - disabled b4 setting */
        out32r(PCIX0_PMM0LA, CFG_PCI_MEMBASE);  /* PMM0 Local Address */
-       out32r(PCIX0_PMM0PCILA, CFG_PCI_MEMBASE);       /* PMM0 PCI Low Address */
+       out32r(PCIX0_PMM0PCILA, CFG_PCI_MEMBASE); /* PMM0 PCI Low Address */
        out32r(PCIX0_PMM0PCIHA, 0x00000000);    /* PMM0 PCI High Address */
-       out32r(PCIX0_PMM0MA, 0xc0000001);       /* 1G + No prefetching, and enable region */
+       out32r(PCIX0_PMM0MA, 0xc0000001);       /* 1G + No prefetching, */
+                                               /* and enable region */
 
        if (!is_monarch()) {
-               /* BAR1: top 64MB of RAM */
-               out32r(PCIX0_PTM1MS, 0xfc000001);       /* Memory Size/Attribute */
-               out32r(PCIX0_PTM1LA, 0x0c000000);       /* Local Addr. Reg */
+               ptmla_str = getenv("ptm1la");
+               ptmms_str = getenv("ptm1ms");
+               if(NULL != ptmla_str && NULL != ptmms_str ) {
+                       out32r(PCIX0_PTM1MS,
+                              simple_strtoul(ptmms_str, NULL, 16));
+                       out32r(PCIX0_PTM1LA,
+                              simple_strtoul(ptmla_str, NULL, 16));
+               } else {
+                       /* BAR1: default top 64MB of RAM */
+                       out32r(PCIX0_PTM1MS, 0xfc000001);
+                       out32r(PCIX0_PTM1LA, 0x0c000000);
+               }
        } else {
-               /* BAR1: complete 256MB RAM (TODO: make dynamic) */
-               out32r(PCIX0_PTM1MS, 0xf0000001);       /* Memory Size/Attribute */
-               out32r(PCIX0_PTM1LA, 0x00000000);       /* Local Addr. Reg */
+               /* BAR1: default: complete 256MB RAM */
+               out32r(PCIX0_PTM1MS, 0xf0000001);
+               out32r(PCIX0_PTM1LA, 0x00000000);
        }
 
-       /* BAR2: 16 MB FPGA registers */
-       out32r(PCIX0_PTM2MS, 0xff000001);       /* Memory Size/Attribute */
-       out32r(PCIX0_PTM2LA, 0xef000000);       /* Local Addr. Reg */
+       ptmla_str = getenv("ptm2la");           /* Local Addr. Reg */
+       ptmms_str = getenv("ptm2ms");           /* Memory Size/Attribute */
+       if(NULL != ptmla_str && NULL != ptmms_str ) {
+               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 */
+               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);
        }
 
-       /*--------------------------------------------------------------------------+
+       /*
         * Set up Configuration registers
-        *--------------------------------------------------------------------------*/
+        */
 
        /* Program the board's vendor id */
        pci_write_config_word(0, PCI_SUBSYSTEM_VENDOR_ID,
@@ -587,8 +607,10 @@ void pci_target_init(struct pci_controller *hose)
                                      CFG_PCI_CLASSCODE_NONMONARCH);
 
                /* PCI configuration done: release ERREADY */
-               out_be32((void*)GPIO1_OR,  in_be32((void*)GPIO1_OR)  | GPIO1_PPC_EREADY);
-               out_be32((void*)GPIO1_TCR, in_be32((void*)GPIO1_TCR) | GPIO1_PPC_EREADY);
+               out_be32((void*)GPIO1_OR,
+                        in_be32((void*)GPIO1_OR) | GPIO1_PPC_EREADY);
+               out_be32((void*)GPIO1_TCR,
+                        in_be32((void*)GPIO1_TCR) | GPIO1_PPC_EREADY);
        } else {
                /* Program the board's subsystem id/classcode */
                pci_write_config_word(0, PCI_SUBSYSTEM_ID,