diff options
Diffstat (limited to 'arch/cris/arch-v32/lib')
| -rw-r--r-- | arch/cris/arch-v32/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/cris/arch-v32/lib/checksum.S | 3 | ||||
| -rw-r--r-- | arch/cris/arch-v32/lib/checksumcopy.S | 3 | ||||
| -rw-r--r-- | arch/cris/arch-v32/lib/nand_init.S | 178 | ||||
| -rw-r--r-- | arch/cris/arch-v32/lib/spinlock.S | 7 | ||||
| -rw-r--r-- | arch/cris/arch-v32/lib/strcmp.S | 21 |
6 files changed, 35 insertions, 179 deletions
diff --git a/arch/cris/arch-v32/lib/Makefile b/arch/cris/arch-v32/lib/Makefile index eb4aad1f115..dd296b9db03 100644 --- a/arch/cris/arch-v32/lib/Makefile +++ b/arch/cris/arch-v32/lib/Makefile @@ -3,5 +3,5 @@ # lib-y = checksum.o checksumcopy.o string.o usercopy.o memset.o \ - csumcpfruser.o spinlock.o delay.o + csumcpfruser.o spinlock.o delay.o strcmp.o diff --git a/arch/cris/arch-v32/lib/checksum.S b/arch/cris/arch-v32/lib/checksum.S index 87f3fd71ab1..4a72a94a49a 100644 --- a/arch/cris/arch-v32/lib/checksum.S +++ b/arch/cris/arch-v32/lib/checksum.S @@ -6,6 +6,7 @@ */ .globl csum_partial + .type csum_partial,@function csum_partial: ;; r10 - src @@ -83,3 +84,5 @@ _do_byte: addu.b [$r10],$r12 ret move.d $r12,$r10 + + .size csum_partial, .-csum_partial diff --git a/arch/cris/arch-v32/lib/checksumcopy.S b/arch/cris/arch-v32/lib/checksumcopy.S index 21aabe91489..54e209f18b0 100644 --- a/arch/cris/arch-v32/lib/checksumcopy.S +++ b/arch/cris/arch-v32/lib/checksumcopy.S @@ -9,6 +9,7 @@ */ .globl csum_partial_copy_nocheck + .type csum_partial_copy_nocheck,@function csum_partial_copy_nocheck: ;; r10 - src @@ -89,3 +90,5 @@ _do_byte: move.b $r9,[$r11] ret move.d $r13,$r10 + + .size csum_partial_copy_nocheck, . - csum_partial_copy_nocheck diff --git a/arch/cris/arch-v32/lib/nand_init.S b/arch/cris/arch-v32/lib/nand_init.S deleted file mode 100644 index e019816facd..00000000000 --- a/arch/cris/arch-v32/lib/nand_init.S +++ /dev/null @@ -1,178 +0,0 @@ -##============================================================================= -## -## nand_init.S -## -## The bootrom copies data from the NAND flash to the internal RAM but -## due to a bug/feature we can only trust the 256 first bytes. So this -## code copies more data from NAND flash to internal RAM. Obvioulsy this -## code must fit in the first 256 bytes so alter with care. -## -## Some notes about the bug/feature for future reference: -## The bootrom copies the first 127 KB from NAND flash to internal -## memory. The problem is that it does a bytewise copy. NAND flashes -## does autoincrement on the address so for a 16-bite device each -## read/write increases the address by two. So the copy loop in the -## bootrom will discard every second byte. This is solved by inserting -## zeroes in every second byte in the first erase block. -## -## The bootrom also incorrectly assumes that it can read the flash -## linear with only one read command but the flash will actually -## switch between normal area and spare area if you do that so we -## can't trust more than the first 256 bytes. -## -##============================================================================= - -#include <asm/arch/hwregs/asm/reg_map_asm.h> -#include <asm/arch/hwregs/asm/gio_defs_asm.h> -#include <asm/arch/hwregs/asm/pinmux_defs_asm.h> -#include <asm/arch/hwregs/asm/bif_core_defs_asm.h> -#include <asm/arch/hwregs/asm/config_defs_asm.h> - -;; There are 8-bit NAND flashes and 16-bit NAND flashes. -;; We need to treat them slightly different. -#if CONFIG_ETRAX_FLASH_BUSWIDTH==2 -#define PAGE_SIZE 256 -#else -#error 2 -#define PAGE_SIZE 512 -#endif -#define ERASE_BLOCK 16384 - -;; GPIO pins connected to NAND flash -#define CE 4 -#define CLE 5 -#define ALE 6 -#define BY 7 - -;; Address space for NAND flash -#define NAND_RD_ADDR 0x90000000 -#define NAND_WR_ADDR 0x94000000 - -#define READ_CMD 0x00 - -;; Readability macros -#define CSP_MASK \ - REG_MASK(bif_core, rw_grp3_cfg, gated_csp0) | \ - REG_MASK(bif_core, rw_grp3_cfg, gated_csp1) -#define CSP_VAL \ - REG_STATE(bif_core, rw_grp3_cfg, gated_csp0, rd) | \ - REG_STATE(bif_core, rw_grp3_cfg, gated_csp1, wr) - -;;---------------------------------------------------------------------------- -;; Macros to set/clear GPIO bits - -.macro SET x - or.b (1<<\x),$r9 - move.d $r9, [$r2] -.endm - -.macro CLR x - and.b ~(1<<\x),$r9 - move.d $r9, [$r2] -.endm - -;;---------------------------------------------------------------------------- - -nand_boot: - ;; Check if nand boot was selected - move.d REG_ADDR(config, regi_config, r_bootsel), $r0 - move.d [$r0], $r0 - and.d REG_MASK(config, r_bootsel, boot_mode), $r0 - cmp.d REG_STATE(config, r_bootsel, boot_mode, nand), $r0 - bne normal_boot ; No NAND boot - nop - -copy_nand_to_ram: - ;; copy_nand_to_ram - ;; Arguments - ;; r10 - destination - ;; r11 - source offset - ;; r12 - size - ;; r13 - Address to jump to after completion - ;; Note : r10-r12 are clobbered on return - ;; Registers used: - ;; r0 - NAND_RD_ADDR - ;; r1 - NAND_WR_ADDR - ;; r2 - reg_gio_rw_pa_dout - ;; r3 - reg_gio_r_pa_din - ;; r4 - tmp - ;; r5 - byte counter within a page - ;; r6 - reg_pinmux_rw_pa - ;; r7 - reg_gio_rw_pa_oe - ;; r8 - reg_bif_core_rw_grp3_cfg - ;; r9 - reg_gio_rw_pa_dout shadow - move.d 0x90000000, $r0 - move.d 0x94000000, $r1 - move.d REG_ADDR(gio, regi_gio, rw_pa_dout), $r2 - move.d REG_ADDR(gio, regi_gio, r_pa_din), $r3 - move.d REG_ADDR(pinmux, regi_pinmux, rw_pa), $r6 - move.d REG_ADDR(gio, regi_gio, rw_pa_oe), $r7 - move.d REG_ADDR(bif_core, regi_bif_core, rw_grp3_cfg), $r8 - -#if CONFIG_ETRAX_FLASH_BUSWIDTH==2 - lsrq 1, $r11 -#endif - ;; Set up GPIO - move.d [$r2], $r9 - move.d [$r7], $r4 - or.b (1<<ALE) | (1 << CLE) | (1<<CE), $r4 - move.d $r4, [$r7] - - ;; Set up bif - move.d [$r8], $r4 - and.d CSP_MASK, $r4 - or.d CSP_VAL, $r4 - move.d $r4, [$r8] - -1: ;; Copy one page - CLR CE - SET CLE - moveq READ_CMD, $r4 - move.b $r4, [$r1] - moveq 20, $r4 -2: bne 2b - subq 1, $r4 - CLR CLE - SET ALE - clear.w [$r1] ; Column address = 0 - move.d $r11, $r4 - lsrq 8, $r4 - move.b $r4, [$r1] ; Row address - lsrq 8, $r4 - move.b $r4, [$r1] ; Row adddress - moveq 20, $r4 -2: bne 2b - subq 1, $r4 - CLR ALE -2: move.d [$r3], $r4 - and.d 1 << BY, $r4 - beq 2b - movu.w PAGE_SIZE, $r5 -2: ; Copy one byte/word -#if CONFIG_ETRAX_FLASH_BUSWIDTH==2 - move.w [$r0], $r4 -#else - move.b [$r0], $r4 -#endif - subq 1, $r5 - bne 2b -#if CONFIG_ETRAX_FLASH_BUSWIDTH==2 - move.w $r4, [$r10+] - subu.w PAGE_SIZE*2, $r12 -#else - move.b $r4, [$r10+] - subu.w PAGE_SIZE, $r12 -#endif - bpl 1b - addu.w PAGE_SIZE, $r11 - - ;; End of copy - jump $r13 - nop - - ;; This will warn if the code above is too large. If you consider - ;; to remove this you don't understand the bug/feature. - .org 256 - .org ERASE_BLOCK - -normal_boot: diff --git a/arch/cris/arch-v32/lib/spinlock.S b/arch/cris/arch-v32/lib/spinlock.S index 79087ef59a1..fe610b9d775 100644 --- a/arch/cris/arch-v32/lib/spinlock.S +++ b/arch/cris/arch-v32/lib/spinlock.S @@ -6,7 +6,9 @@ .global cris_spin_lock + .type cris_spin_lock,@function .global cris_spin_trylock + .type cris_spin_trylock,@function .text @@ -22,6 +24,8 @@ cris_spin_lock: ret nop + .size cris_spin_lock, . - cris_spin_lock + cris_spin_trylock: clearf p 1: move.b [$r10], $r11 @@ -31,3 +35,6 @@ cris_spin_trylock: clearf p ret movu.b $r11,$r10 + + .size cris_spin_trylock, . - cris_spin_trylock + diff --git a/arch/cris/arch-v32/lib/strcmp.S b/arch/cris/arch-v32/lib/strcmp.S new file mode 100644 index 00000000000..8f7a1ee6259 --- /dev/null +++ b/arch/cris/arch-v32/lib/strcmp.S @@ -0,0 +1,21 @@ +; strcmp.S -- CRISv32 version. +; Copyright (C) 2008 AXIS Communications AB +; Written by Edgar E. Iglesias +; +; This source code is licensed under the GNU General Public License, +; Version 2. See the file COPYING for more details. + + .global strcmp + .type strcmp,@function +strcmp: +1: + move.b [$r10+], $r12 + seq $r13 + sub.b [$r11+], $r12 + or.b $r12, $r13 + beq 1b + nop + + ret + movs.b $r12, $r10 + .size strcmp, . - strcmp |
