projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 1da177e4 LT |
2 | /* |
| 3 | * arch/m32r/boot/compressed/m32r_sio.c | |
| 4 | * | |
| 5 | * 2003-02-12: Takeo Takahashi | |
| d93f7de8 | 6 | * 2006-11-30: OPSPUT support by Kazuhiro Inaoka |
| 1da177e4 LT |
7 | * |
| 8 | */ | |
| 9 | ||
| 23680863 | 10 | #include <asm/processor.h> |
| 1da177e4 | 11 | |
| 9babed6a | 12 | static void m32r_putc(char c); |
| 1da177e4 LT |
13 | |
| 14 | static int puts(const char *s) | |
| 15 | { | |
| 16 | char c; | |
| 9babed6a SM |
17 | while ((c = *s++)) |
| 18 | m32r_putc(c); | |
| 1da177e4 LT |
19 | return 0; |
| 20 | } | |
| 21 | ||
| 7852375b | 22 | #if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_OPSPUT) |
| 1da177e4 LT |
23 | #include <asm/m32r.h> |
| 24 | #include <asm/io.h> | |
| 25 | ||
| 26 | #define USE_FPGA_MAP 0 | |
| 27 | ||
| 28 | #if USE_FPGA_MAP | |
| 29 | /* | |
| 30 | * fpga configuration program uses MMU, and define map as same as | |
| 31 | * M32104 uT-Engine board. | |
| 32 | */ | |
| 33 | #define BOOT_SIO0STS (volatile unsigned short *)(0x02c00000 + 0x20006) | |
| 34 | #define BOOT_SIO0TXB (volatile unsigned short *)(0x02c00000 + 0x2000c) | |
| 35 | #else | |
| 36 | #undef PLD_BASE | |
| d93f7de8 HT |
37 | #if defined(CONFIG_PLAT_OPSPUT) |
| 38 | #define PLD_BASE 0x1cc00000 | |
| 39 | #else | |
| 1da177e4 | 40 | #define PLD_BASE 0xa4c00000 |
| d93f7de8 | 41 | #endif |
| 1da177e4 LT |
42 | #define BOOT_SIO0STS PLD_ESIO0STS |
| 43 | #define BOOT_SIO0TXB PLD_ESIO0TXB | |
| 44 | #endif | |
| 45 | ||
| 9babed6a | 46 | static void m32r_putc(char c) |
| 1da177e4 | 47 | { |
| 23680863 HT |
48 | while ((*BOOT_SIO0STS & 0x3) != 0x3) |
| 49 | cpu_relax(); | |
| 1da177e4 LT |
50 | if (c == '\n') { |
| 51 | *BOOT_SIO0TXB = '\r'; | |
| 23680863 HT |
52 | while ((*BOOT_SIO0STS & 0x3) != 0x3) |
| 53 | cpu_relax(); | |
| 1da177e4 LT |
54 | } |
| 55 | *BOOT_SIO0TXB = c; | |
| 56 | } | |
| 7852375b | 57 | #else /* !(CONFIG_PLAT_M32700UT) */ |
| 23680863 | 58 | #if defined(CONFIG_PLAT_MAPPI2) |
| 1da177e4 LT |
59 | #define SIO0STS (volatile unsigned short *)(0xa0efd000 + 14) |
| 60 | #define SIO0TXB (volatile unsigned short *)(0xa0efd000 + 30) | |
| 61 | #else | |
| 62 | #define SIO0STS (volatile unsigned short *)(0x00efd000 + 14) | |
| 63 | #define SIO0TXB (volatile unsigned short *)(0x00efd000 + 30) | |
| 64 | #endif | |
| 65 | ||
| 9babed6a | 66 | static void m32r_putc(char c) |
| 1da177e4 | 67 | { |
| 23680863 HT |
68 | while ((*SIO0STS & 0x1) == 0) |
| 69 | cpu_relax(); | |
| 1da177e4 LT |
70 | if (c == '\n') { |
| 71 | *SIO0TXB = '\r'; | |
| 23680863 HT |
72 | while ((*SIO0STS & 0x1) == 0) |
| 73 | cpu_relax(); | |
| 1da177e4 LT |
74 | } |
| 75 | *SIO0TXB = c; | |
| 76 | } | |
| 77 | #endif |