Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Board setup routines for the Motorola PrPMC2800 |
| 3 | * |
| 4 | * Author: Dale Farnsworth <dale@farnsworth.org> |
| 5 | * |
| 6 | * 2007 (c) MontaVista, Software, Inc. This file is licensed under |
| 7 | * the terms of the GNU General Public License version 2. This program |
| 8 | * is licensed "as is" without any warranty of any kind, whether express |
| 9 | * or implied. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/stddef.h> |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/delay.h> |
| 15 | #include <linux/interrupt.h> |
| 16 | #include <linux/seq_file.h> |
| 17 | |
| 18 | #include <asm/machdep.h> |
| 19 | #include <asm/prom.h> |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 20 | #include <asm/time.h> |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 21 | |
| 22 | #include <mm/mmu_decl.h> |
| 23 | |
| 24 | #include <sysdev/mv64x60.h> |
| 25 | |
| 26 | #define MV64x60_MPP_CNTL_0 0x0000 |
| 27 | #define MV64x60_MPP_CNTL_2 0x0008 |
| 28 | |
| 29 | #define MV64x60_GPP_IO_CNTL 0x0000 |
| 30 | #define MV64x60_GPP_LEVEL_CNTL 0x0010 |
| 31 | #define MV64x60_GPP_VALUE_SET 0x0018 |
| 32 | |
| 33 | #define PLATFORM_NAME_MAX 32 |
| 34 | |
| 35 | static char prpmc2800_platform_name[PLATFORM_NAME_MAX]; |
| 36 | |
| 37 | static void __iomem *mv64x60_mpp_reg_base; |
| 38 | static void __iomem *mv64x60_gpp_reg_base; |
| 39 | |
| 40 | static void __init prpmc2800_setup_arch(void) |
| 41 | { |
| 42 | struct device_node *np; |
| 43 | phys_addr_t paddr; |
| 44 | const unsigned int *reg; |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 45 | |
| 46 | /* |
| 47 | * ioremap mpp and gpp registers in case they are later |
| 48 | * needed by prpmc2800_reset_board(). |
| 49 | */ |
Mark A. Greer | a1810b4 | 2008-04-08 08:09:03 +1000 | [diff] [blame] | 50 | np = of_find_compatible_node(NULL, NULL, "marvell,mv64360-mpp"); |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 51 | reg = of_get_property(np, "reg", NULL); |
| 52 | paddr = of_translate_address(np, reg); |
| 53 | of_node_put(np); |
| 54 | mv64x60_mpp_reg_base = ioremap(paddr, reg[1]); |
| 55 | |
Mark A. Greer | a1810b4 | 2008-04-08 08:09:03 +1000 | [diff] [blame] | 56 | np = of_find_compatible_node(NULL, NULL, "marvell,mv64360-gpp"); |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 57 | reg = of_get_property(np, "reg", NULL); |
| 58 | paddr = of_translate_address(np, reg); |
| 59 | of_node_put(np); |
| 60 | mv64x60_gpp_reg_base = ioremap(paddr, reg[1]); |
| 61 | |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 62 | #ifdef CONFIG_PCI |
| 63 | mv64x60_pci_init(); |
| 64 | #endif |
| 65 | |
| 66 | printk("Motorola %s\n", prpmc2800_platform_name); |
| 67 | } |
| 68 | |
| 69 | static void prpmc2800_reset_board(void) |
| 70 | { |
| 71 | u32 temp; |
| 72 | |
| 73 | local_irq_disable(); |
| 74 | |
| 75 | temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0); |
| 76 | temp &= 0xFFFF0FFF; |
| 77 | out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0, temp); |
| 78 | |
| 79 | temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL); |
| 80 | temp |= 0x00000004; |
| 81 | out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp); |
| 82 | |
| 83 | temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL); |
| 84 | temp |= 0x00000004; |
| 85 | out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp); |
| 86 | |
| 87 | temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2); |
| 88 | temp &= 0xFFFF0FFF; |
| 89 | out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2, temp); |
| 90 | |
| 91 | temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL); |
| 92 | temp |= 0x00080000; |
| 93 | out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp); |
| 94 | |
| 95 | temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL); |
| 96 | temp |= 0x00080000; |
| 97 | out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp); |
| 98 | |
| 99 | out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_VALUE_SET, 0x00080004); |
| 100 | } |
| 101 | |
| 102 | static void prpmc2800_restart(char *cmd) |
| 103 | { |
| 104 | volatile ulong i = 10000000; |
| 105 | |
| 106 | prpmc2800_reset_board(); |
| 107 | |
| 108 | while (i-- > 0); |
| 109 | panic("restart failed\n"); |
| 110 | } |
| 111 | |
| 112 | #ifdef CONFIG_NOT_COHERENT_CACHE |
| 113 | #define PPRPM2800_COHERENCY_SETTING "off" |
| 114 | #else |
| 115 | #define PPRPM2800_COHERENCY_SETTING "on" |
| 116 | #endif |
| 117 | |
| 118 | void prpmc2800_show_cpuinfo(struct seq_file *m) |
| 119 | { |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 120 | seq_printf(m, "Vendor\t\t: Motorola\n"); |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 121 | seq_printf(m, "coherency\t: %s\n", PPRPM2800_COHERENCY_SETTING); |
| 122 | } |
| 123 | |
| 124 | /* |
| 125 | * Called very early, device-tree isn't unflattened |
| 126 | */ |
| 127 | static int __init prpmc2800_probe(void) |
| 128 | { |
| 129 | unsigned long root = of_get_flat_dt_root(); |
| 130 | unsigned long len = PLATFORM_NAME_MAX; |
| 131 | void *m; |
| 132 | |
| 133 | if (!of_flat_dt_is_compatible(root, "motorola,PrPMC2800")) |
| 134 | return 0; |
| 135 | |
| 136 | /* Update ppc_md.name with name from dt */ |
| 137 | m = of_get_flat_dt_prop(root, "model", &len); |
| 138 | if (m) |
| 139 | strncpy(prpmc2800_platform_name, m, |
| 140 | min((int)len, PLATFORM_NAME_MAX - 1)); |
| 141 | |
Mark A. Greer | 0961dbf | 2007-11-15 06:04:02 +1100 | [diff] [blame] | 142 | _set_L2CR(_get_L2CR() | L2CR_L2E); |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 143 | return 1; |
| 144 | } |
| 145 | |
| 146 | define_machine(prpmc2800){ |
| 147 | .name = prpmc2800_platform_name, |
| 148 | .probe = prpmc2800_probe, |
| 149 | .setup_arch = prpmc2800_setup_arch, |
Dale Farnsworth | 9b41fcb | 2007-05-15 05:52:22 +1000 | [diff] [blame] | 150 | .init_early = mv64x60_init_early, |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 151 | .show_cpuinfo = prpmc2800_show_cpuinfo, |
| 152 | .init_IRQ = mv64x60_init_irq, |
| 153 | .get_irq = mv64x60_get_irq, |
| 154 | .restart = prpmc2800_restart, |
| 155 | .calibrate_decr = generic_calibrate_decr, |
Dale Farnsworth | fd4ba7e | 2007-05-12 10:58:43 +1000 | [diff] [blame] | 156 | }; |