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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2023-12-21 15:16:48 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2024-01-15 10:33:41 +0100 |
| commit | 23ba8d2c2c56d0e5375e3ebb61fd66d7f05843b2 (patch) | |
| tree | bced4265b3c29cc8cfaa613e397f0a9b54c889e9 /bsps | |
| parent | bsp/tms570: Honor DBGRST for TMS570LC4357 (diff) | |
| download | rtems-23ba8d2c2c56d0e5375e3ebb61fd66d7f05843b2.tar.bz2 | |
bsp/tms570: Use asm code for tms570_memory_init()
Make sure that we do not use the stack for this function.
Update #4982.
Diffstat (limited to 'bsps')
| -rw-r--r-- | bsps/arm/tms570/start/tms570_selftest.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/bsps/arm/tms570/start/tms570_selftest.c b/bsps/arm/tms570/start/tms570_selftest.c index 20d0f0d352..99b8718a4a 100644 --- a/bsps/arm/tms570/start/tms570_selftest.c +++ b/bsps/arm/tms570/start/tms570_selftest.c @@ -9,6 +9,7 @@ */ /* + * Copyright (C) 2023 embedded brains GmbH & Co. KG * Copyright (C) 2022 Airbus U.S. Space & Defense, Inc * Copyright (C) 2009-2015 Texas Instruments Incorporated - www.ti.com * @@ -534,21 +535,27 @@ void tms570_pbist_fail( void ) /* SourceId : SELFTEST_SourceId_002 */ /* DesignId : SELFTEST_DesignId_004 */ /* Requirements : HL_SR396 */ -void tms570_memory_init( uint32_t ram ) +__attribute__((__naked__)) void tms570_memory_init( uint32_t ram ) { - /* Enable Memory Hardware Initialization */ - TMS570_SYS1.MINITGCR = 0xAU; - - /* Enable Memory Hardware Initialization for selected RAM's */ - TMS570_SYS1.MSIENA = ram; - - /* Wait until Memory Hardware Initialization complete */ - /*SAFETYMCUSW 28 D MR:NA <APPROVED> "Hardware status bit read check" */ - while ( ( TMS570_SYS1.MSTCGSTAT & 0x00000100U ) != 0x00000100U ) { - } /* Wait */ - - /* Disable Memory Hardware Initialization */ - TMS570_SYS1.MINITGCR = 0x5U; + __asm__ volatile ( + /* Load memory controller base address */ + "ldr r1, =#0xffffff00\n" + /* Enable Memory Hardware Initialization (MINITGCR) */ + "movs r2, #0xa\n" + "str r2, [r1, #0x5c]\n" + /* Enable Memory Hardware Initialization for selected RAM's (MSIENA) */ + "str r0, [r1, #0x60]\n" + /* Wait until Memory Hardware Initialization completes (MSTCGSTAT) */ + /*SAFETYMCUSW 28 D MR:NA <APPROVED> "Hardware status bit read check" */ + "1: ldr r2, [r1, #0x68]\n" + "tst r2, #0x100\n" + "beq 1b\n" + /* Disable Memory Hardware Initialization (MINITGCR) */ + "movs r2, #0x5\n" + "str r2, [r1, #0x5c]\n" + /* Return */ + "bx lr\n" + ); } volatile uint32_t *const |