diff options
Diffstat (limited to 'arch/powerpc/platforms/embedded6xx/prpmc2800.c')
| -rw-r--r-- | arch/powerpc/platforms/embedded6xx/prpmc2800.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/embedded6xx/prpmc2800.c b/arch/powerpc/platforms/embedded6xx/prpmc2800.c new file mode 100644 index 00000000..d455f08b --- /dev/null +++ b/arch/powerpc/platforms/embedded6xx/prpmc2800.c @@ -0,0 +1,156 @@ +/* + * Board setup routines for the Motorola PrPMC2800 + * + * Author: Dale Farnsworth <dale@farnsworth.org> + * + * 2007 (c) MontaVista, Software, Inc. This file is licensed under + * the terms of the GNU General Public License version 2. This program + * is licensed "as is" without any warranty of any kind, whether express + * or implied. + */ + +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/seq_file.h> + +#include <asm/machdep.h> +#include <asm/prom.h> +#include <asm/time.h> + +#include <mm/mmu_decl.h> + +#include <sysdev/mv64x60.h> + +#define MV64x60_MPP_CNTL_0 0x0000 +#define MV64x60_MPP_CNTL_2 0x0008 + +#define MV64x60_GPP_IO_CNTL 0x0000 +#define MV64x60_GPP_LEVEL_CNTL 0x0010 +#define MV64x60_GPP_VALUE_SET 0x0018 + +#define PLATFORM_NAME_MAX 32 + +static char prpmc2800_platform_name[PLATFORM_NAME_MAX]; + +static void __iomem *mv64x60_mpp_reg_base; +static void __iomem *mv64x60_gpp_reg_base; + +static void __init prpmc2800_setup_arch(void) +{ + struct device_node *np; + phys_addr_t paddr; + const unsigned int *reg; + + /* + * ioremap mpp and gpp registers in case they are later + * needed by prpmc2800_reset_board(). + */ + np = of_find_compatible_node(NULL, NULL, "marvell,mv64360-mpp"); + reg = of_get_property(np, "reg", NULL); + paddr = of_translate_address(np, reg); + of_node_put(np); + mv64x60_mpp_reg_base = ioremap(paddr, reg[1]); + + np = of_find_compatible_node(NULL, NULL, "marvell,mv64360-gpp"); + reg = of_get_property(np, "reg", NULL); + paddr = of_translate_address(np, reg); + of_node_put(np); + mv64x60_gpp_reg_base = ioremap(paddr, reg[1]); + +#ifdef CONFIG_PCI + mv64x60_pci_init(); +#endif + + printk("Motorola %s\n", prpmc2800_platform_name); +} + +static void prpmc2800_reset_board(void) +{ + u32 temp; + + local_irq_disable(); + + temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0); + temp &= 0xFFFF0FFF; + out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0, temp); + + temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL); + temp |= 0x00000004; + out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp); + + temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL); + temp |= 0x00000004; + out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp); + + temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2); + temp &= 0xFFFF0FFF; + out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2, temp); + + temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL); + temp |= 0x00080000; + out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp); + + temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL); + temp |= 0x00080000; + out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp); + + out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_VALUE_SET, 0x00080004); +} + +static void prpmc2800_restart(char *cmd) +{ + volatile ulong i = 10000000; + + prpmc2800_reset_board(); + + while (i-- > 0); + panic("restart failed\n"); +} + +#ifdef CONFIG_NOT_COHERENT_CACHE +#define PPRPM2800_COHERENCY_SETTING "off" +#else +#define PPRPM2800_COHERENCY_SETTING "on" +#endif + +void prpmc2800_show_cpuinfo(struct seq_file *m) +{ + seq_printf(m, "Vendor\t\t: Motorola\n"); + seq_printf(m, "coherency\t: %s\n", PPRPM2800_COHERENCY_SETTING); +} + +/* + * Called very early, device-tree isn't unflattened + */ +static int __init prpmc2800_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + unsigned long len = PLATFORM_NAME_MAX; + void *m; + + if (!of_flat_dt_is_compatible(root, "motorola,PrPMC2800")) + return 0; + + /* Update ppc_md.name with name from dt */ + m = of_get_flat_dt_prop(root, "model", &len); + if (m) + strncpy(prpmc2800_platform_name, m, + min((int)len, PLATFORM_NAME_MAX - 1)); + + _set_L2CR(_get_L2CR() | L2CR_L2E); + return 1; +} + +define_machine(prpmc2800){ + .name = prpmc2800_platform_name, + .probe = prpmc2800_probe, + .setup_arch = prpmc2800_setup_arch, + .init_early = mv64x60_init_early, + .show_cpuinfo = prpmc2800_show_cpuinfo, + .init_IRQ = mv64x60_init_irq, + .get_irq = mv64x60_get_irq, + .restart = prpmc2800_restart, + .calibrate_decr = generic_calibrate_decr, +}; |