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authorNIIBE Yutaka <gniibe@fsij.org>2016-05-30 14:39:02 +0900
committerNIIBE Yutaka <gniibe@fsij.org>2016-05-30 14:39:02 +0900
commitb90e58f763bd277b7a5285601a34818f44f2b01c (patch)
tree4535e6abc8b77d58215796c240489e7dbf499b44 /mcu/sys-mkl27z.c
parent8209f3875510d1990142a367c8bab6164c2f82cc (diff)
Move CHIP specific things to mcu/
Diffstat (limited to 'mcu/sys-mkl27z.c')
-rw-r--r--mcu/sys-mkl27z.c414
1 files changed, 414 insertions, 0 deletions
diff --git a/mcu/sys-mkl27z.c b/mcu/sys-mkl27z.c
new file mode 100644
index 0000000..e44e0c2
--- /dev/null
+++ b/mcu/sys-mkl27z.c
@@ -0,0 +1,414 @@
+/*
+ * sys.c - First pages for MKL27Z256.
+ *
+ * Copyright (C) 2016 Flying Stone Technology
+ * Author: NIIBE Yutaka <gniibe@fsij.org>
+ *
+ * Copying and distribution of this file, with or without modification,
+ * are permitted in any medium without royalty provided the copyright
+ * notice and this notice are preserved. This file is offered as-is,
+ * without any warranty.
+ *
+ *
+ * First two pages of Flash ROM is difficult to use because of
+ * predefined purposes. It's defined as a default vector page and
+ * a flash configuration page.
+ *
+ * We put something useful to those two pages, together with the
+ * data for predefined purposes.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include "board.h"
+
+#define ADDR_VECTORS (0x00000900)
+#define ADDR_SCR_VTOR 0xe000ed08
+
+static void __attribute__ ((naked,section(".fixed_function.reset")))
+reset (void)
+{
+ uint32_t r3 = ADDR_SCR_VTOR;
+
+ asm volatile ("str %2, [%0]\n\t" /* Set SCR->VTOR */
+ "ldr %0, [%2]\n\t" /* Stack address */
+ "msr MSP, %0\n\t" /* Exception handler stack. */
+ "ldr %0, [%2, #4]\n\t" /* The entry address */
+ "bx %0\n\t" /* Jump to the entry */
+ ".align 2"
+ : "=r" (r3)
+ : "0" (r3), "r" (ADDR_VECTORS)
+ : "memory");
+
+ /* Never reach here. */
+}
+
+
+static uint32_t
+stack_entry[] __attribute__ ((section(".first_page.first_words"),used)) = {
+ /* Since MSP are soon modified in RESET, we put 0 here. */
+ 0,
+ (uint32_t)reset,
+};
+
+#include "mcu/clk_gpio_init-mkl27z.c"
+
+static void
+set_led (int on)
+{
+ if (on)
+ GPIOB->PCOR = (1 << 0); /* PTB0: Clear: Light on */
+ else
+ GPIOB->PSOR = (1 << 0); /* PTB0: Set : Light off */
+}
+
+/*
+ * Here comes other SYS routines and data.
+ */
+
+const uint8_t sys_version[8] __attribute__((section(".sys.version"))) = {
+ 3*2+2, /* bLength */
+ 0x03, /* bDescriptorType = STRING_DESCRIPTOR */
+ /* sys version: "3.0" */
+ '3', 0, '.', 0, '0', 0,
+};
+
+static const uint8_t board_name_string[] = BOARD_NAME;
+
+const uint8_t __attribute__((section(".sys.board_info")))
+*const sys_board_name = board_name_string;
+
+const uint32_t __attribute__((section(".sys.board_info")))
+sys_board_id = BOARD_ID;
+
+typedef void (*handler)(void);
+
+handler sys_vector[] __attribute__ ((section(".sys.vectors"))) = {
+ clock_init,
+ gpio_init,
+ (handler)set_led,
+ NULL,
+};
+
+static uint32_t
+flash_config[] __attribute__ ((section(".flash_config"),used)) = {
+ 0xffffffff, 0xffffffff, /* Comparison Key */
+ 0xffffffff, /* Protection bytes */
+ 0xffff3ffe, /* FSEC=0xfe, FOPT=0x3f */
+ /* FOPT=0x3f:
+ * BOOTSRC_SEL=00: Boot from flash
+ */
+ /* FSEC=0xfe:
+ * unsecure
+ */
+};
+
+
+/*
+ * Flash memory routine
+ */
+struct FTFA {
+ volatile uint8_t FSTAT;
+ volatile uint8_t FCNFG;
+ volatile uint8_t FSEC;
+ volatile uint8_t FOPT;
+ /* Note: addressing (3,2,1,0, 7,6,5,4, B,A,9,8) */
+ /* Use Bx macro. */
+ volatile uint8_t FCCO[12];
+ /* Note: addressing (3,2,1,0). Use Bx macro. */
+ volatile uint8_t FPROT[4];
+};
+static struct FTFA *const FTFA = (struct FTFA *const)0x40020000;
+
+#define FSTAT_CCIF 0x80
+#define B3 0
+#define B2 1
+#define B1 2
+#define B0 3
+#define B7 4
+#define B6 5
+#define B5 6
+#define B4 7
+#define BB 8
+#define BA 9
+#define B9 10
+#define B8 11
+
+uint32_t __attribute__ ((naked,section(".fixed_function.flash_do_internal")))
+flash_do_internal (void)
+{
+#ifdef ORIGINAL_IN_C
+ uint8_t r;
+
+ asm volatile ("cpsid i" : : : "memory");
+ FTFA->FSTAT |= FSTAT_CCIF;
+ while (((r = FTFA->FSTAT) & FSTAT_CCIF) == 0)
+ ;
+ r &= ~FSTAT_CCIF;
+ asm volatile ("cpsie i" : : : "memory");
+
+ return (uint32_t)r;
+#else
+ register unsigned int r0 asm ("r0");
+ register unsigned int r1 asm ("r1") = (unsigned int)FTFA;
+ register unsigned int r2 asm ("r2") = FSTAT_CCIF;
+
+ asm volatile ("cpsid i\n\t"
+ "ldrb %0, [%1]\n\t"
+ "orr %0, %2\n\t"
+ "strb %0, [%1]\n"
+ "0:\t"
+ "ldrb %0, [%1]\n\t"
+ "uxtb %0, %0\n\t"
+ "tst %0, %2\n\t"
+ "beq 0b\n\t"
+ "cpsie i\n\t"
+ "bic %0, %2\n\t"
+ "bx lr"
+ : "=r" (r0)
+ : "r" (r1), "r" (r2)
+ : "memory");
+ return r0;
+#endif
+}
+
+/*
+ * Let execute flash command.
+ * Since the code should be on RAM, we copy the code onto stack
+ * and let it go.
+ */
+uint32_t __attribute__ ((naked,section(".fixed_function.flash_do")))
+flash_do (void)
+{
+ register unsigned int r0 asm ("r0");
+ register unsigned int r1 asm ("r1");
+ register unsigned int r2 asm ("r2");
+ register unsigned int r3 asm ("r3") = (unsigned int)flash_do_internal&~3;
+ /* Address of Thumb code &1 == 1, so, we clear the last bits. ------^ */
+
+ asm volatile ("sub sp, #32\n\t"
+ "mov %1, sp\n\t"
+ "mov %2, #0\n"
+ "0:\t"
+ "cmp %2, #32\n\t"
+ "beq 1f\n\t"
+ "ldr %0, [%3, %2]\n\t"
+ "str %0, [%1, %2]\n\t"
+ "add %2, #4\n\t"
+ "b 0b\n"
+ "1:\t"
+ "add %1, #1\n\t" /* Thumb code requires LSB=1. */
+ "mov %3, lr\n\t"
+ "blx %1\n\t"
+ "add sp, #32\n\t"
+ "bx %3"
+ : "=r" (r0), "=r" (r1), "=r" (r2), "=r" (r3)
+ : "3" (r3));
+}
+
+#define FLASH_COMMAND_PROGRAM_LONGWORD 0x06
+#define FLASH_COMMAND_ERASE_FLASH_SECTOR 0x09
+
+int __attribute__ ((naked,section(".fixed_function.flash_erase_page")))
+flash_erase_page (uint32_t addr)
+{
+#ifdef ORIGINAL_IN_C
+ FTFA->FCCO[B0] = FLASH_COMMAND_ERASE_FLASH_SECTOR;
+ FTFA->FCCO[B3] = (addr >> 0) & 0xff;
+ FTFA->FCCO[B2] = (addr >> 8) & 0xff;
+ FTFA->FCCO[B1] = (addr >> 16) & 0xff;
+ flash_do ();
+#else
+ register unsigned int r0 asm ("r0") = addr;
+ register unsigned int r1 asm ("r1");
+ register unsigned int r2 asm ("r2") = FLASH_COMMAND_ERASE_FLASH_SECTOR;
+ register unsigned int r3 asm ("r3") = (unsigned int)FTFA;
+
+ asm volatile ("strb %2, [%3, #7]\n\t"
+ "strb %0, [%3, #4]\n\t"
+ "lsr %0, #8\n\t"
+ "strb %0, [%3, #5]\n\t"
+ "lsr %0, #8\n\t"
+ "strb %0, [%3, #6]\n\t"
+ "b flash_do"
+ : "=r" (r0), "=r" (r1), "=r" (r2), "=r" (r3)
+ : "0" (r0), "2" (r2), "3" (r3));
+#endif
+}
+
+int __attribute__ ((naked,section(".fixed_function.flash_program_word")))
+flash_program_word (uint32_t addr, uint32_t word)
+{
+#ifdef ORIGINAL_IN_C
+ FTFA->FCCO[B0] = FLASH_COMMAND_PROGRAM_LONGWORD;
+ FTFA->FCCO[B3] = (addr >> 0) & 0xff;
+ FTFA->FCCO[B2] = (addr >> 8) & 0xff;
+ FTFA->FCCO[B1] = (addr >> 16) & 0xff;
+ FTFA->FCCO[B4] = (word >> 0) & 0xff;
+ FTFA->FCCO[B5] = (word >> 8) & 0xff;
+ FTFA->FCCO[B6] = (word >> 16) & 0xff;
+ FTFA->FCCO[B7] = (word >> 24) & 0xff;
+ flash_do ();
+#else
+ register unsigned int r0 asm ("r0") = addr;
+ register unsigned int r1 asm ("r1") = word;
+ register unsigned int r2 asm ("r2") = FLASH_COMMAND_PROGRAM_LONGWORD;
+ register unsigned int r3 asm ("r3") = (unsigned int)FTFA;
+
+ asm volatile ("strb %2, [%3, #7]\n\t"
+ "strb %0, [%3, #4]\n\t"
+ "lsr %0, #8\n\t"
+ "strb %0, [%3, #5]\n\t"
+ "lsr %0, #8\n\t"
+ "strb %0, [%3, #6]\n\t"
+ "strb %1, [%3, #11]\n\t"
+ "lsr %1, #8\n\t"
+ "strb %1, [%3, #10]\n\t"
+ "lsr %1, #8\n\t"
+ "strb %1, [%3, #9]\n\t"
+ "lsr %1, #8\n\t"
+ "strb %1, [%3, #8]\n\t"
+ "b flash_do"
+ : "=r" (r0), "=r" (r1), "=r" (r2), "=r" (r3)
+ : "0" (r0), "1" (r1), "2" (r2), "3" (r3));
+#endif
+}
+
+
+/*
+ * CRC32 calculation routines.
+ */
+void __attribute__ ((naked,section(".fixed_function.crc32_init")))
+crc32_init (unsigned int *p)
+{
+#ifdef ORIGINAL_IN_C
+ *p = 0xffffffff;
+#else
+ register unsigned int r3 asm ("r3");
+
+ asm volatile ("mov %0, #1\n\t"
+ "neg %0, %0\n\t"
+ "str %0, [%1]\n\t"
+ "bx lr"
+ : "=r" (r3)
+ : "r" (p)
+ : "memory");
+#endif
+}
+
+#ifdef ORIGINAL_IN_C
+const unsigned int *const crc32_table= (const unsigned int *const)0x00000500;
+#endif
+
+void __attribute__ ((naked,section(".fixed_function.crc32_u8")))
+crc32_u8 (unsigned int *p, unsigned char v)
+{
+#ifdef ORIGINAL_IN_C
+ *p = crc32_table[(*p & 0xff) ^ v] ^ (*p >> 8);
+#else
+ register unsigned int r2 asm ("r2");
+ register unsigned int r3 asm ("r3");
+
+ asm volatile ("ldrb %2, [%4]\n\t"
+ "eor %0, %2\n\t"
+ "mov %2, #0xa0\n\t" /* (0x0500 >> 3) */
+ "lsl %0, %0, #2\n\t"
+ "lsl %2, %2, #3\n\t"
+ "add %0, %0, %2\n\t"
+ "ldr %2, [%4]\n\t"
+ "ldr %1, [%0]\n\t"
+ "lsr %2, %2, #8\n\t"
+ "eor %2, %1\n\t"
+ "str %2, [%4]\n\t"
+ "bx lr"
+ : "=r" (v), "=r" (r2), "=r" (r3)
+ : "0" (v), "r" (p)
+ : "memory");
+#endif
+}
+
+void __attribute__ ((naked,section(".fixed_function.crc32_u32")))
+crc32_u32 (unsigned int *p, unsigned int u)
+{
+#ifdef ORIGINAL_IN_C
+ crc32_u8 (p, u & 0xff);
+ crc32_u8 (p, (u >> 8)& 0xff);
+ crc32_u8 (p, (u >> 16)& 0xff);
+ crc32_u8 (p, (u >> 24)& 0xff);
+#else
+ register unsigned int r3 asm ("r3");
+ register unsigned int r4 asm ("r4");
+ register unsigned int r5 asm ("r5");
+
+ asm volatile ("push {%1, %2, %3, lr}\n\t"
+ "mov %2, %0\n\t"
+ "mov %3, %5\n\t"
+ "uxtb %0, %0\n\t"
+ "bl crc32_u8\n\t"
+ "lsr %0, %2, #8\n\t"
+ "mov %5, %3\n\t"
+ "uxtb %0, %0\n\t"
+ "bl crc32_u8\n\t"
+ "lsr %0, %2, #16\n\t"
+ "mov %5, %3\n\t"
+ "uxtb %0, %0\n\t"
+ "bl crc32_u8\n\t"
+ "mov %5, %3\n\t"
+ "lsr %0, %2, #24\n\t"
+ "bl crc32_u8\n\t"
+ "pop {%1, %2, %3, pc}"
+ : "=r" (u), "=r" (r3), "=r" (r4), "=r" (r5)
+ : "0" (u), "r" (p)
+ : "memory");
+#endif
+}
+
+/*
+ * Table of CRC32, generated by gen_crc_table.py
+ */
+const unsigned int
+crc32_table[256] __attribute__ ((section(".crc32_table"))) = {
+ 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
+ 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+ 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
+ 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+ 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+ 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+ 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
+ 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+ 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
+ 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+ 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
+ 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+ 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
+ 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+ 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+ 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+ 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
+ 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+ 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
+ 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+ 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
+ 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+ 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
+ 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+ 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+ 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+ 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
+ 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+ 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
+ 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+ 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
+ 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+ 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
+ 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+ 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+ 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+ 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
+ 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+ 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
+ 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+ 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
+ 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+ 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-07 02:47:36 +0000