From 6ba10be3492959fa052eaa98b2ff0935f09b6d24 Mon Sep 17 00:00:00 2001 From: Nicolas Schodet Date: Wed, 1 May 2013 00:34:39 +0200 Subject: digital/io-hub/src/bootloader: add io-hub-stm32 XMODEM bootloader Not exactly a bootloader, but a binary image updater, which should be run by main code. --- digital/io-hub/src/bootloader/Config | 2 + digital/io-hub/src/bootloader/Makefile | 9 +++ digital/io-hub/src/bootloader/bootloader.cc | 84 +++++++++++++++++++++++ digital/io-hub/src/bootloader/self_programming.cc | 59 ++++++++++++++++ digital/io-hub/src/bootloader/self_programming.hh | 33 +++++++++ digital/io-hub/src/bootloader/stm32f4.ld | 6 ++ 6 files changed, 193 insertions(+) create mode 100644 digital/io-hub/src/bootloader/Config create mode 100644 digital/io-hub/src/bootloader/Makefile create mode 100644 digital/io-hub/src/bootloader/bootloader.cc create mode 100644 digital/io-hub/src/bootloader/self_programming.cc create mode 100644 digital/io-hub/src/bootloader/self_programming.hh create mode 100644 digital/io-hub/src/bootloader/stm32f4.ld (limited to 'digital/io-hub') diff --git a/digital/io-hub/src/bootloader/Config b/digital/io-hub/src/bootloader/Config new file mode 100644 index 00000000..727498dc --- /dev/null +++ b/digital/io-hub/src/bootloader/Config @@ -0,0 +1,2 @@ +[hal/uart] +rx_buffer = 2048 diff --git a/digital/io-hub/src/bootloader/Makefile b/digital/io-hub/src/bootloader/Makefile new file mode 100644 index 00000000..a2610723 --- /dev/null +++ b/digital/io-hub/src/bootloader/Makefile @@ -0,0 +1,9 @@ +BASE = ../../../ucoolib + +TARGETS = stm32f4 +PROGS = bootloader +bootloader_SOURCES = bootloader.cc self_programming.cc + +MODULES = hal/uart utils dev/xmodem + +include $(BASE)/build/top.mk diff --git a/digital/io-hub/src/bootloader/bootloader.cc b/digital/io-hub/src/bootloader/bootloader.cc new file mode 100644 index 00000000..ca8a99c2 --- /dev/null +++ b/digital/io-hub/src/bootloader/bootloader.cc @@ -0,0 +1,84 @@ +// io-hub - Modular Input/Output. {{{ +// +// Copyright (C) 2013 Nicolas Schodet +// +// APBTeam: +// Web: http://apbteam.org/ +// Email: team AT apbteam DOT org +// +// 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 "ucoolib/hal/uart/uart.hh" +#include "ucoolib/arch/arch.hh" +#include "ucoolib/common.hh" + +#include +#include "ucoolib/hal/gpio/gpio.hh" + +#include "ucoolib/dev/xmodem/xmodem.hh" +#include "ucoolib/utils/delay.hh" + +#include "self_programming.hh" + +class BootloaderReceiver : public ucoo::XmodemReceiver +{ + uint32_t addr_; +public: + BootloaderReceiver (uint32_t addr) : addr_ (addr) { } + int write (const char *buf, int count) + { + self_programming_write (addr_, buf, count); + addr_ += count; + return count; + } +}; + +int +main (int argc, const char **argv) +{ + ucoo::arch_init (argc, argv); + // D8, D9: UART3 + // C12, D2: UART5 + rcc_peripheral_enable_clock (&RCC_AHB1ENR, RCC_AHB1ENR_IOPCEN); + rcc_peripheral_enable_clock (&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN); + gpio_mode_setup (GPIOC, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO12); + gpio_mode_setup (GPIOD, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO2 | GPIO8 | GPIO9); + gpio_set_af (GPIOC, GPIO_AF8, GPIO12); + gpio_set_af (GPIOD, GPIO_AF8, GPIO2); + gpio_set_af (GPIOD, GPIO_AF7, GPIO8 | GPIO9); + ucoo::Uart u0 (2), u1 (4); + u0.enable (38400, ucoo::Uart::EVEN, 1); + u1.enable (38400, ucoo::Uart::EVEN, 1); + ucoo::Uart *u[] = { &u0, &u1 }; + const char welcome[] = "Press enter to start Xmodem receiver\n"; + int i; + for (i = 0; i < (int) lengthof (u); i++) + { + u[i]->write (welcome, sizeof (welcome) - 1); + u[i]->block (false); + } + for (i = 0; ; i = (i + 1) % lengthof (u)) + { + int c = u[i]->getc (); + if (c == '\n') + break; + } + BootloaderReceiver receiver (0x8000000); + ucoo::xmodem_receive (*u[i], receiver); + ucoo::delay (1); + ucoo::arch_reset (); +} + diff --git a/digital/io-hub/src/bootloader/self_programming.cc b/digital/io-hub/src/bootloader/self_programming.cc new file mode 100644 index 00000000..803e1c7a --- /dev/null +++ b/digital/io-hub/src/bootloader/self_programming.cc @@ -0,0 +1,59 @@ +// io-hub - Modular Input/Output. {{{ +// +// Copyright (C) 2013 Nicolas Schodet +// +// APBTeam: +// Web: http://apbteam.org/ +// Email: team AT apbteam DOT org +// +// 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 "self_programming.hh" +#include + +static const uint32_t sector_addr[] = { + // 16 KB + 0x8000000, 0x8004000, 0x8008000, 0x800c000, + // 64 KB + 0x8010000, + // 128 KB. + 0x8020000, 0x8040000, 0x8060000, 0x8080000, 0x80a0000, 0x80c0000, + 0x80e0000, 0x8100000, +}; + +static int +self_programming_sector (uint32_t addr) +{ + unsigned i; + for (i = 0; i < lengthof (sector_addr); i++) + if (addr == sector_addr[i]) + return i; + return -1; +} + +void +self_programming_write (uint32_t addr, const char *buf, int count) +{ + int sector = self_programming_sector (addr); + flash_unlock (); + if (sector != -1) + flash_erase_sector (sector << 3, FLASH_CR_PROGRAM_X32); + for (int i = 0; i < count; i += 4) + flash_program_word (addr + i, *(uint32_t *) (buf + i), + FLASH_CR_PROGRAM_X32); + flash_lock (); +} + diff --git a/digital/io-hub/src/bootloader/self_programming.hh b/digital/io-hub/src/bootloader/self_programming.hh new file mode 100644 index 00000000..63a05aaf --- /dev/null +++ b/digital/io-hub/src/bootloader/self_programming.hh @@ -0,0 +1,33 @@ +#ifndef self_programming_hh +#define self_programming_hh +// io-hub - Modular Input/Output. {{{ +// +// Copyright (C) 2013 Nicolas Schodet +// +// APBTeam: +// Web: http://apbteam.org/ +// Email: team AT apbteam DOT org +// +// 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 "ucoolib/common.hh" + +/// Program flash at given address. If address is a start of a page, erase +/// first. Everything must be word aligned. +void +self_programming_write (uint32_t addr, const char *buf, int count); + +#endif // self_programming_hh diff --git a/digital/io-hub/src/bootloader/stm32f4.ld b/digital/io-hub/src/bootloader/stm32f4.ld new file mode 100644 index 00000000..1b84f38c --- /dev/null +++ b/digital/io-hub/src/bootloader/stm32f4.ld @@ -0,0 +1,6 @@ +MEMORY +{ + rom (rx) : ORIGIN = 0x080e0000, LENGTH = 128K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 128K +} +INCLUDE libopencm3_stm32f4.ld -- cgit v1.2.3