diff options
| -rw-r--r-- | arch/powerpc/boot/dts/mpc8548cds.dts | 8 | ||||
| -rw-r--r-- | arch/powerpc/platforms/85xx/mpc85xx_cds.c | 50 |
2 files changed, 41 insertions, 17 deletions
diff --git a/arch/powerpc/boot/dts/mpc8548cds.dts b/arch/powerpc/boot/dts/mpc8548cds.dts index 8d4df8e7b696..0683983f1d3b 100644 --- a/arch/powerpc/boot/dts/mpc8548cds.dts +++ b/arch/powerpc/boot/dts/mpc8548cds.dts @@ -35,7 +35,8 @@ lbc: localbus@e0005000 { reg = <0 0xe0005000 0 0x1000>; - ranges = <0x0 0x0 0x0 0xff000000 0x01000000>; + ranges = <0x0 0x0 0x0 0xff000000 0x01000000 + 0x1 0x0 0x0 0xf8004000 0x00001000>; nor@0,0 { #address-cells = <1>; @@ -72,6 +73,11 @@ read-only; }; }; + + board-control@1,0 { + compatible = "fsl,mpc8548cds-fpga"; + reg = <0x1 0x0 0x1000>; + }; }; soc: soc8548@e0000000 { diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c index 766b2150e480..ab5f0bf19454 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c @@ -48,17 +48,24 @@ #include "mpc85xx.h" -/* CADMUS info */ -/* xxx - galak, move into device tree */ -#define CADMUS_BASE (0xf8004000) -#define CADMUS_SIZE (256) -#define CM_VER (0) -#define CM_CSR (1) -#define CM_RST (2) - +/* + * The CDS board contains an FPGA/CPLD called "Cadmus", which collects + * various logic and performs system control functions. + * Here is the FPGA/CPLD register map. + */ +struct cadmus_reg { + u8 cm_ver; /* Board version */ + u8 cm_csr; /* General control/status */ + u8 cm_rst; /* Reset control */ + u8 cm_hsclk; /* High speed clock */ + u8 cm_hsxclk; /* High speed clock extended */ + u8 cm_led; /* LED data */ + u8 cm_pci; /* PCI control/status */ + u8 cm_dma; /* DMA control */ + u8 res[248]; /* Total 256 bytes */ +}; -static int cds_pci_slot = 2; -static volatile u8 *cadmus; +static struct cadmus_reg *cadmus; #ifdef CONFIG_PCI @@ -275,20 +282,30 @@ machine_device_initcall(mpc85xx_cds, mpc85xx_cds_8259_attach); */ static void __init mpc85xx_cds_setup_arch(void) { -#ifdef CONFIG_PCI struct device_node *np; -#endif + int cds_pci_slot; if (ppc_md.progress) ppc_md.progress("mpc85xx_cds_setup_arch()", 0); - cadmus = ioremap(CADMUS_BASE, CADMUS_SIZE); - cds_pci_slot = ((cadmus[CM_CSR] >> 6) & 0x3) + 1; + np = of_find_compatible_node(NULL, NULL, "fsl,mpc8548cds-fpga"); + if (!np) { + pr_err("Could not find FPGA node.\n"); + return; + } + + cadmus = of_iomap(np, 0); + of_node_put(np); + if (!cadmus) { + pr_err("Fail to map FPGA area.\n"); + return; + } if (ppc_md.progress) { char buf[40]; + cds_pci_slot = ((in_8(&cadmus->cm_csr) >> 6) & 0x3) + 1; snprintf(buf, 40, "CDS Version = 0x%x in slot %d\n", - cadmus[CM_VER], cds_pci_slot); + in_8(&cadmus->cm_ver), cds_pci_slot); ppc_md.progress(buf, 0); } @@ -318,7 +335,8 @@ static void mpc85xx_cds_show_cpuinfo(struct seq_file *m) svid = mfspr(SPRN_SVR); seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n"); - seq_printf(m, "Machine\t\t: MPC85xx CDS (0x%x)\n", cadmus[CM_VER]); + seq_printf(m, "Machine\t\t: MPC85xx CDS (0x%x)\n", + in_8(&cadmus->cm_ver)); seq_printf(m, "PVR\t\t: 0x%x\n", pvid); seq_printf(m, "SVR\t\t: 0x%x\n", svid); |