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https://github.com/brain-hackers/u-boot-brain
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![Kim Phillips](/assets/img/avatar_default.png)
u-boot's byteorder headers did not contain endianness attributions for use with sparse, causing a lot of false positives. Import the kernel's latest definitions, and enable them by including compiler.h and types.h. They come with 'const' added for some swab functions, so fix those up, too: include/linux/byteorder/big_endian.h:46:2: warning: passing argument 1 of '__swab64p' discards 'const' qualifier from pointer target type [enabled by default] Also, note: u-boot's historic __BYTE_ORDER definition has been preserved (for the time being at least). We also remove ad-hoc barrier() definitions, since we're including compiler.h in files that hadn't in the past: macb.c:54:0: warning: "barrier" redefined [enabled by default] In addition, including compiler.h in byteorder changes the 'noinline' definition to expand to __attribute__((noinline)). This fixes arch/powerpc/lib/bootm.c: bootm.c:329:16: error: attribute '__attribute__': unknown attribute bootm.c:329:16: error: expected ')' before '__attribute__' bootm.c:329:25: error: expected identifier or '(' before ')' token powerpc sparse builds yield: include/common.h:356:22: error: marked inline, but without a definition the unknown-reason inlining without a definition is considered obsolete given it was part of the 2002 initial commit, and no arm version was 'fixed.' also fixed: ydirectenv.h:60:0: warning: "inline" redefined [enabled by default] and: Configuring for devconcenter - Board: intip, Options: DEVCONCENTER make[1]: *** [4xx_ibm_ddr2_autocalib.o] Error 1 make: *** [arch/powerpc/cpu/ppc4xx/libppc4xx.o] Error 2 powerpc-fsl-linux-size: './u-boot': No such file 4xx_ibm_ddr2_autocalib.c: In function 'DQS_autocalibration': include/asm/ppc4xx-sdram.h:1407:13: sorry, unimplemented: inlining failed in call to 'ppc4xx_ibm_ddr2_register_dump': function body not available 4xx_ibm_ddr2_autocalib.c:1243:32: sorry, unimplemented: called from here and: In file included from crc32.c:50:0: crc32table.h:4:1: warning: implicit declaration of function '___constant_swab32' [-Wimplicit-function-declaration] crc32table.h:4:1: error: initializer element is not constant crc32table.h:4:1: error: (near initialization for 'crc32table_le[0]') Signed-off-by: Kim Phillips <kim.phillips@freescale.com> [trini: Remove '#endif' in include/common.h around setenv portion] Signed-off-by: Tom Rini <trini@ti.com>
187 lines
3.9 KiB
C
187 lines
3.9 KiB
C
/*
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* (C) Copyright 2002
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* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
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*
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* (C) Copyright 2008
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* Guennadi Liakhovetki, DENX Software Engineering, <lg@denx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <common.h>
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#include <asm/arch/s3c6400.h>
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_SERIAL1
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#define UART_NR S3C64XX_UART0
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#elif defined(CONFIG_SERIAL2)
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#define UART_NR S3C64XX_UART1
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#elif defined(CONFIG_SERIAL3)
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#define UART_NR S3C64XX_UART2
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#else
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#error "Bad: you didn't configure serial ..."
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#endif
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/*
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* The coefficient, used to calculate the baudrate on S3C6400 UARTs is
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* calculated as
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* C = UBRDIV * 16 + number_of_set_bits_in_UDIVSLOT
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* however, section 31.6.11 of the datasheet doesn't recomment using 1 for 1,
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* 3 for 2, ... (2^n - 1) for n, instead, they suggest using these constants:
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*/
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static const int udivslot[] = {
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0,
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0x0080,
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0x0808,
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0x0888,
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0x2222,
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0x4924,
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0x4a52,
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0x54aa,
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0x5555,
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0xd555,
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0xd5d5,
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0xddd5,
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0xdddd,
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0xdfdd,
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0xdfdf,
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0xffdf,
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};
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static void s3c64xx_serial_setbrg(void)
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{
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s3c64xx_uart *const uart = s3c64xx_get_base_uart(UART_NR);
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u32 pclk = get_PCLK();
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u32 baudrate = gd->baudrate;
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int i;
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i = (pclk / baudrate) % 16;
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uart->UBRDIV = pclk / baudrate / 16 - 1;
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uart->UDIVSLOT = udivslot[i];
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for (i = 0; i < 100; i++)
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barrier();
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}
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/*
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* Initialise the serial port with the given baudrate. The settings
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* are always 8 data bits, no parity, 1 stop bit, no start bits.
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*/
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static int s3c64xx_serial_init(void)
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{
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s3c64xx_uart *const uart = s3c64xx_get_base_uart(UART_NR);
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/* reset and enable FIFOs, set triggers to the maximum */
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uart->UFCON = 0xff;
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uart->UMCON = 0;
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/* 8N1 */
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uart->ULCON = 3;
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/* No interrupts, no DMA, pure polling */
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uart->UCON = 5;
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serial_setbrg();
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return 0;
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}
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/*
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* Read a single byte from the serial port. Returns 1 on success, 0
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* otherwise. When the function is succesfull, the character read is
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* written into its argument c.
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*/
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static int s3c64xx_serial_getc(void)
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{
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s3c64xx_uart *const uart = s3c64xx_get_base_uart(UART_NR);
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/* wait for character to arrive */
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while (!(uart->UTRSTAT & 0x1));
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return uart->URXH & 0xff;
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}
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#ifdef CONFIG_MODEM_SUPPORT
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static int be_quiet;
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void disable_putc(void)
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{
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be_quiet = 1;
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}
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void enable_putc(void)
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{
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be_quiet = 0;
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}
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#endif
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/*
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* Output a single byte to the serial port.
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*/
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static void s3c64xx_serial_putc(const char c)
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{
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s3c64xx_uart *const uart = s3c64xx_get_base_uart(UART_NR);
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#ifdef CONFIG_MODEM_SUPPORT
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if (be_quiet)
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return;
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#endif
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/* wait for room in the tx FIFO */
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while (!(uart->UTRSTAT & 0x2));
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uart->UTXH = c;
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/* If \n, also do \r */
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if (c == '\n')
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serial_putc('\r');
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}
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/*
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* Test whether a character is in the RX buffer
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*/
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static int s3c64xx_serial_tstc(void)
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{
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s3c64xx_uart *const uart = s3c64xx_get_base_uart(UART_NR);
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return uart->UTRSTAT & 0x1;
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}
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static struct serial_device s3c64xx_serial_drv = {
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.name = "s3c64xx_serial",
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.start = s3c64xx_serial_init,
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.stop = NULL,
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.setbrg = s3c64xx_serial_setbrg,
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.putc = s3c64xx_serial_putc,
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.puts = default_serial_puts,
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.getc = s3c64xx_serial_getc,
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.tstc = s3c64xx_serial_tstc,
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};
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void s3c64xx_serial_initialize(void)
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{
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serial_register(&s3c64xx_serial_drv);
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}
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__weak struct serial_device *default_serial_console(void)
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{
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return &s3c64xx_serial_drv;
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}
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