1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
6 #include <asm/mach-types.h>
8 static inline unsigned int __raw_readl(unsigned int ptr)
10 return *((volatile unsigned int *)ptr);
13 static inline void __raw_writeb(unsigned char value, unsigned int ptr)
15 *((volatile unsigned char *)ptr) = value;
18 static inline void __raw_writel(unsigned int value, unsigned int ptr)
20 *((volatile unsigned int *)ptr) = value;
24 * Some bootloaders don't turn off DMA from the ethernet MAC before
25 * jumping to linux, which means that we might end up with bits of RX
26 * status and packet data scribbled over the uncompressed kernel image.
27 * Work around this by resetting the ethernet MAC before we uncompress.
29 #define PHYS_ETH_SELF_CTL 0x80010020
30 #define ETH_SELF_CTL_RESET 0x00000001
32 static inline void ep93xx_ethernet_reset(void)
36 /* Reset the ethernet MAC. */
37 v = __raw_readl(PHYS_ETH_SELF_CTL);
38 __raw_writel(v | ETH_SELF_CTL_RESET, PHYS_ETH_SELF_CTL);
40 /* Wait for reset to finish. */
41 while (__raw_readl(PHYS_ETH_SELF_CTL) & ETH_SELF_CTL_RESET)
45 #define TS72XX_WDT_CONTROL_PHYS_BASE 0x23800000
46 #define TS72XX_WDT_FEED_PHYS_BASE 0x23c00000
47 #define TS72XX_WDT_FEED_VAL 0x05
49 static inline void __maybe_unused ts72xx_watchdog_disable(void)
51 __raw_writeb(TS72XX_WDT_FEED_VAL, TS72XX_WDT_FEED_PHYS_BASE);
52 __raw_writeb(0, TS72XX_WDT_CONTROL_PHYS_BASE);
55 static inline void ep93xx_decomp_setup(void)
57 if (machine_is_ts72xx())
58 ts72xx_watchdog_disable();
60 if (machine_is_adssphere() ||
61 machine_is_edb9301() ||
62 machine_is_edb9302() ||
63 machine_is_edb9302a() ||
64 machine_is_edb9302a() ||
65 machine_is_edb9307() ||
66 machine_is_edb9307a() ||
67 machine_is_edb9307a() ||
68 machine_is_edb9312() ||
69 machine_is_edb9315() ||
70 machine_is_edb9315a() ||
71 machine_is_edb9315a() ||
72 machine_is_gesbc9312() ||
73 machine_is_micro9() ||
74 machine_is_micro9l() ||
75 machine_is_micro9m() ||
76 machine_is_micro9s() ||
77 machine_is_micro9m() ||
78 machine_is_micro9l() ||
79 machine_is_micro9s() ||
80 machine_is_sim_one() ||
81 machine_is_snapper_cl15() ||
82 machine_is_ts72xx() ||
84 machine_is_vision_ep9307())
85 ep93xx_ethernet_reset();