projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /***************************************************************************/ |
| 2 | ||
| 3 | /* | |
| ece9ae65 | 4 | * m528x.c -- platform support for ColdFire 528x based boards |
| 1da177e4 | 5 | * |
| 25985edc | 6 | * Sub-architcture dependent initialization code for the Freescale |
| 980f9235 | 7 | * 5280, 5281 and 5282 CPUs. |
| 1da177e4 LT |
8 | * |
| 9 | * Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com) | |
| 10 | * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com) | |
| 11 | */ | |
| 12 | ||
| 13 | /***************************************************************************/ | |
| 14 | ||
| 1da177e4 | 15 | #include <linux/kernel.h> |
| 1da177e4 LT |
16 | #include <linux/param.h> |
| 17 | #include <linux/init.h> | |
| eb49e907 | 18 | #include <linux/platform_device.h> |
| eb49e907 | 19 | #include <linux/io.h> |
| 1da177e4 LT |
20 | #include <asm/machdep.h> |
| 21 | #include <asm/coldfire.h> | |
| 22 | #include <asm/mcfsim.h> | |
| eb49e907 | 23 | #include <asm/mcfuart.h> |
| 87f37769 GU |
24 | #include <asm/mcfclk.h> |
| 25 | ||
| 26 | /***************************************************************************/ | |
| 27 | ||
| 28 | DEFINE_CLK(pll, "pll.0", MCF_CLK); | |
| 29 | DEFINE_CLK(sys, "sys.0", MCF_BUSCLK); | |
| 30 | DEFINE_CLK(mcfpit0, "mcfpit.0", MCF_CLK); | |
| 31 | DEFINE_CLK(mcfpit1, "mcfpit.1", MCF_CLK); | |
| 32 | DEFINE_CLK(mcfpit2, "mcfpit.2", MCF_CLK); | |
| 33 | DEFINE_CLK(mcfpit3, "mcfpit.3", MCF_CLK); | |
| 34 | DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK); | |
| 35 | DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK); | |
| 36 | DEFINE_CLK(mcfuart2, "mcfuart.2", MCF_BUSCLK); | |
| 74859523 | 37 | DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK); |
| 87f37769 GU |
38 | DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK); |
| 39 | ||
| 40 | struct clk *mcf_clks[] = { | |
| 41 | &clk_pll, | |
| 42 | &clk_sys, | |
| 43 | &clk_mcfpit0, | |
| 44 | &clk_mcfpit1, | |
| 45 | &clk_mcfpit2, | |
| 46 | &clk_mcfpit3, | |
| 47 | &clk_mcfuart0, | |
| 48 | &clk_mcfuart1, | |
| 49 | &clk_mcfuart2, | |
| 74859523 | 50 | &clk_mcfqspi0, |
| 87f37769 GU |
51 | &clk_fec0, |
| 52 | NULL | |
| 53 | }; | |
| 1da177e4 LT |
54 | |
| 55 | /***************************************************************************/ | |
| 56 | ||
| 91d60417 SK |
57 | static void __init m528x_qspi_init(void) |
| 58 | { | |
| 151d14f4 | 59 | #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) |
| 91d60417 SK |
60 | /* setup Port QS for QSPI with gpio CS control */ |
| 61 | __raw_writeb(0x07, MCFGPIO_PQSPAR); | |
| 83ca6009 | 62 | #endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ |
| 151d14f4 | 63 | } |
| eb49e907 GU |
64 | |
| 65 | /***************************************************************************/ | |
| 66 | ||
| cae82a83 | 67 | static void __init m528x_uarts_init(void) |
| eb49e907 GU |
68 | { |
| 69 | u8 port; | |
| eb49e907 | 70 | |
| eb49e907 | 71 | /* make sure PUAPAR is set for UART0 and UART1 */ |
| 0371a1c5 | 72 | port = readb(MCFGPIO_PUAPAR); |
| cae82a83 | 73 | port |= 0x03 | (0x03 << 2); |
| eac57949 | 74 | writeb(port, MCFGPIO_PUAPAR); |
| eb49e907 | 75 | } |
| 1da177e4 LT |
76 | |
| 77 | /***************************************************************************/ | |
| 78 | ||
| ffba3f48 GU |
79 | static void __init m528x_fec_init(void) |
| 80 | { | |
| ffba3f48 GU |
81 | u16 v16; |
| 82 | ||
| ffba3f48 | 83 | /* Set multi-function pins to ethernet mode for fec0 */ |
| a91f7415 GU |
84 | v16 = readw(MCFGPIO_PASPAR); |
| 85 | writew(v16 | 0xf00, MCFGPIO_PASPAR); | |
| 86 | writeb(0xc0, MCFGPIO_PEHLPAR); | |
| ffba3f48 GU |
87 | } |
| 88 | ||
| 89 | /***************************************************************************/ | |
| 90 | ||
| 188a9a48 SB |
91 | #ifdef CONFIG_WILDFIRE |
| 92 | void wildfire_halt(void) | |
| 93 | { | |
| 94 | writeb(0, 0x30000007); | |
| 95 | writeb(0x2, 0x30000007); | |
| 96 | } | |
| 97 | #endif | |
| 98 | ||
| 99 | #ifdef CONFIG_WILDFIREMOD | |
| 100 | void wildfiremod_halt(void) | |
| 101 | { | |
| 102 | printk(KERN_INFO "WildFireMod hibernating...\n"); | |
| 103 | ||
| 104 | /* Set portE.5 to Digital IO */ | |
| 6789419c | 105 | writew(readw(MCFGPIO_PEPAR) & ~(1 << (5 * 2)), MCFGPIO_PEPAR); |
| 188a9a48 SB |
106 | |
| 107 | /* Make portE.5 an output */ | |
| 6789419c | 108 | writeb(readb(MCFGPIO_PDDR_E) | (1 << 5), MCFGPIO_PDDR_E); |
| 188a9a48 SB |
109 | |
| 110 | /* Now toggle portE.5 from low to high */ | |
| 6789419c GU |
111 | writeb(readb(MCFGPIO_PODR_E) & ~(1 << 5), MCFGPIO_PODR_E); |
| 112 | writeb(readb(MCFGPIO_PODR_E) | (1 << 5), MCFGPIO_PODR_E); | |
| 188a9a48 SB |
113 | |
| 114 | printk(KERN_EMERG "Failed to hibernate. Halting!\n"); | |
| 115 | } | |
| 116 | #endif | |
| 117 | ||
| eb49e907 | 118 | void __init config_BSP(char *commandp, int size) |
| 1da177e4 | 119 | { |
| 188a9a48 SB |
120 | #ifdef CONFIG_WILDFIRE |
| 121 | mach_halt = wildfire_halt; | |
| 122 | #endif | |
| 123 | #ifdef CONFIG_WILDFIREMOD | |
| 124 | mach_halt = wildfiremod_halt; | |
| 125 | #endif | |
| 35aefb26 | 126 | mach_sched_init = hw_timer_init; |
| eb49e907 | 127 | m528x_uarts_init(); |
| ffba3f48 | 128 | m528x_fec_init(); |
| 91d60417 | 129 | m528x_qspi_init(); |
| eb49e907 GU |
130 | } |
| 131 | ||
| eb49e907 | 132 | /***************************************************************************/ |