From a47a12becf66f02a56da91c161e2edb625e9f20c Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Thu, 15 Apr 2010 16:07:28 +0200 Subject: Move arch/ppc to arch/powerpc As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese Acked-by: Wolfgang Denk Acked-by: Detlev Zundel Acked-by: Kim Phillips Cc: Peter Tyser Cc: Anatolij Gustschin --- post/lib_powerpc/cmp.c | 134 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 134 insertions(+) create mode 100644 post/lib_powerpc/cmp.c (limited to 'post/lib_powerpc/cmp.c') diff --git a/post/lib_powerpc/cmp.c b/post/lib_powerpc/cmp.c new file mode 100644 index 0000000000..5f6a3b9046 --- /dev/null +++ b/post/lib_powerpc/cmp.c @@ -0,0 +1,134 @@ +/* + * (C) Copyright 2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include + +/* + * CPU test + * Integer compare instructions: cmpw, cmplw + * + * To verify these instructions the test runs them with + * different combinations of operands, reads the condition + * register value and compares it with the expected one. + * The test contains a pre-built table + * containing the description of each test case: the instruction, + * the values of the operands, the condition field to save + * the result in and the expected result. + */ + +#include +#include "cpu_asm.h" + +#if CONFIG_POST & CONFIG_SYS_POST_CPU + +extern void cpu_post_exec_12 (ulong *code, ulong *res, ulong op1, ulong op2); + +static struct cpu_post_cmp_s +{ + ulong cmd; + ulong op1; + ulong op2; + ulong cr; + ulong res; +} cpu_post_cmp_table[] = +{ + { + OP_CMPW, + 123, + 123, + 2, + 0x02 + }, + { + OP_CMPW, + 123, + 133, + 3, + 0x08 + }, + { + OP_CMPW, + 123, + -133, + 4, + 0x04 + }, + { + OP_CMPLW, + 123, + 123, + 2, + 0x02 + }, + { + OP_CMPLW, + 123, + -133, + 3, + 0x08 + }, + { + OP_CMPLW, + 123, + 113, + 4, + 0x04 + }, +}; +static unsigned int cpu_post_cmp_size = + sizeof (cpu_post_cmp_table) / sizeof (struct cpu_post_cmp_s); + +int cpu_post_test_cmp (void) +{ + int ret = 0; + unsigned int i; + int flag = disable_interrupts(); + + for (i = 0; i < cpu_post_cmp_size && ret == 0; i++) + { + struct cpu_post_cmp_s *test = cpu_post_cmp_table + i; + unsigned long code[] = + { + ASM_2C(test->cmd, test->cr, 3, 4), + ASM_MFCR(3), + ASM_BLR + }; + ulong res; + + cpu_post_exec_12 (code, & res, test->op1, test->op2); + + ret = ((res >> (28 - 4 * test->cr)) & 0xe) == test->res ? 0 : -1; + + if (ret != 0) + { + post_log ("Error at cmp test %d !\n", i); + } + } + + if (flag) + enable_interrupts(); + + return ret; +} + +#endif -- cgit v1.2.3