[PATCH] powerpc: Migrate ML300 reference design to the platform bus

Signed-off-by: Grant C. Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 53 insertions, 23 deletions

diff --git a/arch/ppc/platforms/4xx/xilinx_ml300.c b/arch/ppc/platforms/4xx/xilinx_ml300.c
index b0de0a2f131d..267afb50607e 100644
--- a/arch/ppc/platforms/4xx/xilinx_ml300.c
+++ b/arch/ppc/platforms/4xx/xilinx_ml300.c
@@ -17,12 +17,14 @@
 #include <linux/tty.h>
 #include <linux/serial.h>
 #include <linux/serial_core.h>
+#include <linux/serial_8250.h>
 #include <linux/serialP.h>
 #include <asm/io.h>
 #include <asm/machdep.h>
-#include <asm/ocp.h>
+#include <asm/ppc_sys.h>
 
-#include <platforms/4xx/virtex.h>       /* for NR_SER_PORTS */
+#include <syslib/gen550.h>
+#include <platforms/4xx/xparameters/xparameters.h>
 
 /*
  * As an overview of how the following functions (platform_init,
@@ -54,6 +56,22 @@
  *          ppc4xx_pic_init                     arch/ppc/syslib/xilinx_pic.c
  */
 
+/* Board specifications structures */
+struct ppc_sys_spec *cur_ppc_sys_spec;
+struct ppc_sys_spec ppc_sys_specs[] = {
+        {
+                /* Only one entry, always assume the same design */
+                .ppc_sys_name   = "Xilinx ML300 Reference Design",
+                .mask           = 0x00000000,
+                .value          = 0x00000000,
+                .num_devices    = 1,
+                .device_list    = (enum ppc_sys_devices[])
+                {
+                        VIRTEX_UART,
+                },
+        },
+};
+
 #if defined(XPAR_POWER_0_POWERDOWN_BASEADDR)
 
 static volatile unsigned *powerdown_base =
@@ -80,28 +98,39 @@ ml300_map_io(void)
 #endif
 }
 
+/* Early serial support functions */
 static void __init
+ml300_early_serial_init(int num, struct plat_serial8250_port *pdata)
+{
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+        struct uart_port serial_req;
+
+        memset(&serial_req, 0, sizeof(serial_req));
+        serial_req.mapbase      = pdata->mapbase;
+        serial_req.membase      = pdata->membase;
+        serial_req.irq          = pdata->irq;
+        serial_req.uartclk      = pdata->uartclk;
+        serial_req.regshift     = pdata->regshift;
+        serial_req.iotype       = pdata->iotype;
+        serial_req.flags        = pdata->flags;
+        gen550_init(num, &serial_req);
+#endif
+}
+
+void __init
 ml300_early_serial_map(void)
 {
 #ifdef CONFIG_SERIAL_8250
-        struct serial_state old_ports[] = { SERIAL_PORT_DFNS };
-        struct uart_port port;
-        int i;
-
-        /* Setup ioremapped serial port access */
-        for (i = 0; i < ARRAY_SIZE(old_ports); i++ ) {
-                memset(&port, 0, sizeof(port));
-                port.membase = ioremap((phys_addr_t)(old_ports[i].iomem_base), 16);
-                port.irq = old_ports[i].irq;
-                port.uartclk = old_ports[i].baud_base * 16;
-                port.regshift = old_ports[i].iomem_reg_shift;
-                port.iotype = SERIAL_IO_MEM;
-                port.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
-                port.line = i;
-
-                if (early_serial_setup(&port) != 0) {
-                        printk("Early serial init of port %d failed\n", i);
-                }
+        struct plat_serial8250_port *pdata;
+        int i = 0;
+
+        pdata = (struct plat_serial8250_port *) ppc_sys_get_pdata(VIRTEX_UART);
+        while(pdata && pdata->flags)
+        {
+                pdata->membase = ioremap(pdata->mapbase, 0x100);
+                ml300_early_serial_init(i, pdata);
+                pdata++;
+                i++;
         }
 #endif /* CONFIG_SERIAL_8250 */
 }
@@ -109,9 +138,8 @@ ml300_early_serial_map(void)
 void __init
 ml300_setup_arch(void)
 {
-        ppc4xx_setup_arch();    /* calls ppc4xx_find_bridges() */
-
         ml300_early_serial_map();
+        ppc4xx_setup_arch();    /* calls ppc4xx_find_bridges() */
 
         /* Identify the system */
         printk(KERN_INFO "Xilinx Virtex-II Pro port\n");
@@ -131,6 +159,8 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 {
         ppc4xx_init(r3, r4, r5, r6, r7);
 
+        identify_ppc_sys_by_id(mfspr(SPRN_PVR));
+
         ppc_md.setup_arch = ml300_setup_arch;
         ppc_md.setup_io_mappings = ml300_map_io;
         ppc_md.init_IRQ = ml300_init_irq;
diff --git a/arch/ppc/platforms/4xx/xilinx_ml300.h b/arch/ppc/platforms/4xx/xilinx_ml300.h
index 899398143623..ae8bf1353b01 100644
--- a/arch/ppc/platforms/4xx/xilinx_ml300.h
+++ b/arch/ppc/platforms/4xx/xilinx_ml300.h
@@ -41,7 +41,7 @@ typedef struct board_info {
 #define PPC4xx_ONB_IO_VADDR     0u
 #define PPC4xx_ONB_IO_SIZE      0u
 
-#define PPC4xx_MACHINE_NAME "Xilinx ML300"
+#define PPC4xx_MACHINE_NAME "Xilinx ML300 Reference System"
 
 #endif /* __ASM_XILINX_ML300_H__ */
 #endif /* __KERNEL__ */